{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-46959", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-27T18:42:55.939Z", "datePublished": "2024-02-29T22:31:12.304Z", "dateUpdated": "2025-05-04T12:40:37.929Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T12:40:37.929Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: Fix use-after-free with devm_spi_alloc_*\n\nWe can't rely on the contents of the devres list during\nspi_unregister_controller(), as the list is already torn down at the\ntime we perform devres_find() for devm_spi_release_controller. This\ncauses devices registered with devm_spi_alloc_{master,slave}() to be\nmistakenly identified as legacy, non-devm managed devices and have their\nreference counters decremented below 0.\n\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174\n[<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98)\n[<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24)\n r4:b6700140\n[<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40)\n[<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4)\n r5:b6700180 r4:b6700100\n[<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60)\n r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10\n[<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec)\n r5:b117ad94 r4:b163dc10\n[<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0)\n r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10\n[<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8)\n\nInstead, determine the devm allocation state as a flag on the\ncontroller which is guaranteed to be stable during cleanup."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/spi/spi.c", "include/linux/spi/spi.h"], "versions": [{"version": "a4add022c1552b0d51a0b89a4781919d6ebac4f9", "lessThan": "62bb2c7f2411a0045c24831f11ecacfc35610815", "status": "affected", "versionType": "git"}, {"version": "0870525cf94bc27907e94ce99afb6d7239ffd2f5", "lessThan": "8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e", "status": "affected", "versionType": "git"}, {"version": "8c45a1c6c951bbe7f95db78fcab46f7337364468", "lessThan": "8e029707f50a82c53172359c686b2536ab54e58c", "status": "affected", "versionType": "git"}, {"version": "234b432c7b6184b2d6c5ba2c55f0dd5023c0edf0", "lessThan": "28a5529068c51cdf0295ab1e11a99a3a909a03e4", "status": "affected", "versionType": "git"}, {"version": "3e04a4976addbedcad326f47b0dd4efc570a1fac", "lessThan": "001c8e83646ad3b847b18f6ac55a54367d917d74", "status": "affected", "versionType": "git"}, {"version": "5e844cc37a5cbaa460e68f9a989d321d63088a89", "lessThan": "c7fabe372a9031acd00498bc718ce27c253abfd1", "status": "affected", "versionType": "git"}, {"version": "5e844cc37a5cbaa460e68f9a989d321d63088a89", "lessThan": "cee78aa24578edac8cf00513dca618c0acc17cd7", "status": "affected", "versionType": "git"}, {"version": "5e844cc37a5cbaa460e68f9a989d321d63088a89", "lessThan": "8735248ebb918d25427965f0db07939ed0473ec6", "status": "affected", "versionType": "git"}, {"version": "5e844cc37a5cbaa460e68f9a989d321d63088a89", "lessThan": "794aaf01444d4e765e2b067cba01cc69c1c68ed9", "status": "affected", "versionType": "git"}, {"version": "bd1a5b2307279029faaddbecf2f2ac25eaef8dc6", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/spi/spi.c", "include/linux/spi/spi.h"], "versions": [{"version": "5.10", "status": "affected"}, {"version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver"}, {"version": "4.4.271", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.271", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.233", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.191", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.119", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.37", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.11.21", "lessThanOrEqual": "5.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.12.4", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4.248", "versionEndExcluding": "4.4.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9.248", "versionEndExcluding": "4.9.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.212", "versionEndExcluding": "4.14.233"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.163", "versionEndExcluding": "4.19.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.80", "versionEndExcluding": "5.4.119"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.10.37"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.11.21"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.12.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9.11"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815"}, {"url": "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e"}, {"url": "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c"}, {"url": "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4"}, {"url": "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74"}, {"url": "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1"}, {"url": "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7"}, {"url": "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6"}, {"url": "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9"}], "title": "spi: Fix use-after-free with devm_spi_alloc_*", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": 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"https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-46959", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:57:07.725975Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:46.810Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:17:42.989Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-46959", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:57:07.725975Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:18.640Z"}}], "cna": {"title": "spi: Fix use-after-free with devm_spi_alloc_*", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "a4add022c1552b0d51a0b89a4781919d6ebac4f9", "lessThan": "62bb2c7f2411a0045c24831f11ecacfc35610815", "versionType": "git"}, {"status": "affected", "version": "0870525cf94bc27907e94ce99afb6d7239ffd2f5", "lessThan": "8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e", "versionType": "git"}, {"status": "affected", "version": "8c45a1c6c951bbe7f95db78fcab46f7337364468", "lessThan": "8e029707f50a82c53172359c686b2536ab54e58c", "versionType": "git"}, {"status": "affected", "version": "234b432c7b6184b2d6c5ba2c55f0dd5023c0edf0", "lessThan": "28a5529068c51cdf0295ab1e11a99a3a909a03e4", "versionType": "git"}, {"status": "affected", "version": "3e04a4976addbedcad326f47b0dd4efc570a1fac", "lessThan": "001c8e83646ad3b847b18f6ac55a54367d917d74", "versionType": "git"}, {"status": "affected", "version": "5e844cc37a5cbaa460e68f9a989d321d63088a89", "lessThan": "c7fabe372a9031acd00498bc718ce27c253abfd1", "versionType": "git"}, {"status": "affected", "version": "5e844cc37a5cbaa460e68f9a989d321d63088a89", "lessThan": "cee78aa24578edac8cf00513dca618c0acc17cd7", "versionType": "git"}, {"status": "affected", "version": "5e844cc37a5cbaa460e68f9a989d321d63088a89", "lessThan": "8735248ebb918d25427965f0db07939ed0473ec6", "versionType": "git"}, {"status": "affected", "version": "5e844cc37a5cbaa460e68f9a989d321d63088a89", "lessThan": "794aaf01444d4e765e2b067cba01cc69c1c68ed9", "versionType": "git"}, {"status": "affected", "version": "bd1a5b2307279029faaddbecf2f2ac25eaef8dc6", "versionType": "git"}], "programFiles": ["drivers/spi/spi.c", "include/linux/spi/spi.h"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"status": "unaffected", "version": "0", "lessThan": "5.10", "versionType": "semver"}, {"status": "unaffected", "version": "4.4.271", "versionType": "semver", "lessThanOrEqual": "4.4.*"}, {"status": "unaffected", "version": "4.9.271", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.233", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.191", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.119", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.37", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.11.21", "versionType": "semver", "lessThanOrEqual": "5.11.*"}, {"status": "unaffected", "version": "5.12.4", "versionType": "semver", "lessThanOrEqual": "5.12.*"}, {"status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/spi/spi.c", "include/linux/spi/spi.h"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815"}, {"url": "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e"}, {"url": "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c"}, {"url": "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4"}, {"url": "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74"}, {"url": "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1"}, {"url": "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7"}, {"url": "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6"}, {"url": "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: Fix use-after-free with devm_spi_alloc_*\n\nWe can't rely on the contents of the devres list during\nspi_unregister_controller(), as the list is already torn down at the\ntime we perform devres_find() for devm_spi_release_controller. This\ncauses devices registered with devm_spi_alloc_{master,slave}() to be\nmistakenly identified as legacy, non-devm managed devices and have their\nreference counters decremented below 0.\n\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174\n[<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98)\n[<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24)\n r4:b6700140\n[<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40)\n[<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4)\n r5:b6700180 r4:b6700100\n[<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60)\n r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10\n[<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec)\n r5:b117ad94 r4:b163dc10\n[<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0)\n r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10\n[<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8)\n\nInstead, determine the devm allocation state as a flag on the\ncontroller which is guaranteed to be stable during cleanup."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.4.271", "versionStartIncluding": "4.4.248"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.271", "versionStartIncluding": "4.9.248"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.233", "versionStartIncluding": "4.14.212"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.191", "versionStartIncluding": "4.19.163"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.119", "versionStartIncluding": "5.4.80"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.37", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.11.21", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.12.4", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.13", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.9.11"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T12:40:37.929Z"}}}, "cveMetadata": {"cveId": "CVE-2021-46959", "state": "PUBLISHED", "dateUpdated": "2025-05-04T12:40:37.929Z", "dateReserved": "2024-02-27T18:42:55.939Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-02-29T22:31:12.304Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B30F04D8-0BA7-4D9B-A893-2A53C8EC9B86", "versionEndExcluding": "4.4.271", "versionStartIncluding": "4.4.248", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "DD825021-F606-4423-B5D3-3C780356AAF1", "versionEndExcluding": "4.9.271", "versionStartIncluding": "4.9.248", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BD177AC8-D485-4E8E-B332-C1D2547C42EF", "versionEndExcluding": "4.14.233", "versionStartIncluding": "4.14.212", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "182A108D-24D4-455D-946F-1FDBB03603A1", "versionEndExcluding": "4.19.191", "versionStartIncluding": "4.19.163", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "70F0C6AB-3B72-4F61-B482-4549E6B17950", "versionEndExcluding": "5.4.119", "versionStartIncluding": "5.4.80", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4E433B72-3E3A-435E-9A66-80D28868BDF2", "versionEndExcluding": "5.10.37", "versionStartIncluding": "5.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8CBB94EC-EC33-4464-99C5-03E5542715F0", "versionEndExcluding": "5.11.21", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8C7052F-1B7B-4327-9C2B-84EBF3243838", "versionEndExcluding": "5.12.4", "versionStartIncluding": "5.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: Fix use-after-free with devm_spi_alloc_*\n\nWe can't rely on the contents of the devres list during\nspi_unregister_controller(), as the list is already torn down at the\ntime we perform devres_find() for devm_spi_release_controller. This\ncauses devices registered with devm_spi_alloc_{master,slave}() to be\nmistakenly identified as legacy, non-devm managed devices and have their\nreference counters decremented below 0.\n\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174\n[<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98)\n[<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24)\n r4:b6700140\n[<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40)\n[<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4)\n r5:b6700180 r4:b6700100\n[<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60)\n r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10\n[<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec)\n r5:b117ad94 r4:b163dc10\n[<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0)\n r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10\n[<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8)\n\nInstead, determine the devm allocation state as a flag on the\ncontroller which is guaranteed to be stable during cleanup."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spi: corrige el Use-After-Free con devm_spi_alloc_* No podemos confiar en el contenido de la lista devres durante spi_unregister_controller(), ya que la lista ya est\u00e1 eliminada en ese momento. Realizamos devres_find() para devm_spi_release_controller. Esto hace que los dispositivos registrados con devm_spi_alloc_{master,slave}() se identifiquen err\u00f3neamente como dispositivos heredados, no administrados por devm y sus contadores de referencia disminuyan por debajo de 0. ------------[ cortar aqu\u00ed ] ------------ ADVERTENCIA: CPU: 1 PID: 660 en lib/refcount.c:28 refcount_warn_saturate+0x108/0x174 [] (refcount_warn_saturate) de [] (kobject_put+ 0x90/0x98) [] (kobject_put) de [] (put_device+0x20/0x24) r4:b6700140 [] (put_device) de [] (devm_spi_release_controller+0x3c/0x40 ) [ ] (devm_spi_release_controller) de [] (release_nodes+0x84/0xc4) r5:b6700180 r4:b6700100 [] (release_nodes) de [] (devres_release_all+0x5c/0x6 0) r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10 [] (devres_release_all) de [] (__device_release_driver+0x144/0x1ec) r5:b117ad94 r4:b163dc10 [] (__device_release_driver) de [&lt; b044f70c&gt;] (device_driver_detach+0x84/0xa0) r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10 [] (device_driver_detach) de [ ] (unbind_store+0xe4/0xf8) en su lugar , determine el estado de asignaci\u00f3n devm como un indicador en el controlador que se garantiza que ser\u00e1 estable durante la limpieza."}], "id": "CVE-2021-46959", "lastModified": "2024-12-10T17:55:18.607", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-02-29T23:15:07.230", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: spi: Fix use-after-free with devm_spi_alloc_*", "id": "2267198", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2267198"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nspi: Fix use-after-free with devm_spi_alloc_*\nWe can't rely on the contents of the devres list during\nspi_unregister_controller(), as the list is already torn down at the\ntime we perform devres_find() for devm_spi_release_controller. This\ncauses devices registered with devm_spi_alloc_{master,slave}() to be\nmistakenly identified as legacy, non-devm managed devices and have their\nreference counters decremented below 0.\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174\n[<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98)\n[<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24)\nr4:b6700140\n[<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40)\n[<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4)\nr5:b6700180 r4:b6700100\n[<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60)\nr8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10\n[<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec)\nr5:b117ad94 r4:b163dc10\n[<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0)\nr9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10\n[<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8)\nInstead, determine the devm allocation state as a flag on the\ncontroller which is guaranteed to be stable during cleanup."], "name": "CVE-2021-46959", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-02-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-46959\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-46959\nhttps://lore.kernel.org/linux-cve-announce/2024022916-CVE-2021-46959-f517@gregkh/T/#u"], "threat_severity": "Low"}

{}