CVE-2022-49926

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[<00000000d0ee2afc>] get_phy_device+0xf3/0x2b0\n [<00000000dca0c71f>] __fixed_phy_register.part.0+0x92/0x4e0\n [<000000008a834798>] fixed_phy_register+0x84/0xb0\n [<0000000055223fcb>] dsa_loop_init+0xa9/0x116 [dsa_loop]\n ...\n\nThere are two reasons for memleak in dsa_loop_init().\n\nFirst, fixed_phy_register() create and register phy_device:\n\nfixed_phy_register()\n get_phy_device()\n phy_device_create() # freed by phy_device_free()\n phy_device_register() # freed by phy_device_remove()\n\nBut fixed_phy_unregister() only calls phy_device_remove().\nSo the memory allocated in phy_device_create() is leaked.\n\nSecond, when mdio_driver_register() fail in dsa_loop_init(),\nit just returns and there is no cleanup for phydevs.\n\nFix the problems by catching the error of mdio_driver_register()\nin dsa_loop_init(), then calling both fixed_phy_unregister() and\nphy_device_free() to release phydevs.\nAlso add a function for phydevs cleanup to avoid duplacate."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/dsa/dsa_loop.c"], "versions": [{"version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "935b4beb724946a37cebf97191592d4879d3a3a3", "status": "affected", "versionType": "git"}, {"version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "d593e1ede655b74c42e4e4fe285ea64aee96fb5c", "status": "affected", "versionType": "git"}, {"version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "bbc5d7b46a729bfcbb5544f6612b7a67dd4f4d6f", "status": "affected", "versionType": "git"}, {"version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "37a098fc9b42bd7fce66764866aa514639667b6e", "status": "affected", "versionType": "git"}, {"version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "9f555b1584fc2d5d16ee3c4d9438e93ac7c502c7", "status": "affected", "versionType": "git"}, {"version": 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"status": "unaffected", "versionType": "semver"}, {"version": "5.15.78", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.8", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1", "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": "4.12", "versionEndExcluding": "4.14.299"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "4.19.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.4.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": 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"https://git.kernel.org/stable/c/4d2024b138d9f7b02ae13ee997fd3a71e9e46254"}, {"url": "https://git.kernel.org/stable/c/633efc8b3dc96f56f5a57f2a49764853a2fa3f50"}], "title": "net: dsa: Fix possible memory leaks in dsa_loop_init()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-401", "lang": "en", "description": "CWE-401 Missing Release of Memory after Effective Lifetime"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2025-10-01T14:56:55.465570Z", "id": "CVE-2022-49926", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T14:56:58.099Z"}}]}}

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"2025-10-01T14:18:00.916Z"}}], "cna": {"title": "net: dsa: Fix possible memory leaks in dsa_loop_init()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "935b4beb724946a37cebf97191592d4879d3a3a3", "versionType": "git"}, {"status": "affected", "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "d593e1ede655b74c42e4e4fe285ea64aee96fb5c", "versionType": "git"}, {"status": "affected", "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "bbc5d7b46a729bfcbb5544f6612b7a67dd4f4d6f", "versionType": "git"}, {"status": "affected", "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "37a098fc9b42bd7fce66764866aa514639667b6e", "versionType": "git"}, {"status": "affected", "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "9f555b1584fc2d5d16ee3c4d9438e93ac7c502c7", "versionType": "git"}, {"status": "affected", "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "4d2024b138d9f7b02ae13ee997fd3a71e9e46254", "versionType": "git"}, {"status": "affected", "version": "98cd1552ea27e512c7e99e2aa76042a26e4fb25c", "lessThan": "633efc8b3dc96f56f5a57f2a49764853a2fa3f50", "versionType": "git"}], "programFiles": ["drivers/net/dsa/dsa_loop.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.12"}, {"status": "unaffected", "version": "0", "lessThan": "4.12", "versionType": "semver"}, {"status": "unaffected", "version": "4.14.299", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.265", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.224", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.154", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.78", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.0.8", "versionType": "semver", "lessThanOrEqual": "6.0.*"}, {"status": "unaffected", "version": "6.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/dsa/dsa_loop.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/935b4beb724946a37cebf97191592d4879d3a3a3"}, {"url": "https://git.kernel.org/stable/c/d593e1ede655b74c42e4e4fe285ea64aee96fb5c"}, {"url": "https://git.kernel.org/stable/c/bbc5d7b46a729bfcbb5544f6612b7a67dd4f4d6f"}, {"url": "https://git.kernel.org/stable/c/37a098fc9b42bd7fce66764866aa514639667b6e"}, {"url": "https://git.kernel.org/stable/c/9f555b1584fc2d5d16ee3c4d9438e93ac7c502c7"}, {"url": "https://git.kernel.org/stable/c/4d2024b138d9f7b02ae13ee997fd3a71e9e46254"}, {"url": "https://git.kernel.org/stable/c/633efc8b3dc96f56f5a57f2a49764853a2fa3f50"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: Fix possible memory leaks in dsa_loop_init()\n\nkmemleak reported memory leaks in dsa_loop_init():\n\nkmemleak: 12 new suspected memory leaks\n\nunreferenced object 0xffff8880138ce000 (size 2048):\n comm \"modprobe\", pid 390, jiffies 4295040478 (age 238.976s)\n backtrace:\n [<000000006a94f1d5>] kmalloc_trace+0x26/0x60\n [<00000000a9c44622>] phy_device_create+0x5d/0x970\n [<00000000d0ee2afc>] get_phy_device+0xf3/0x2b0\n [<00000000dca0c71f>] __fixed_phy_register.part.0+0x92/0x4e0\n [<000000008a834798>] fixed_phy_register+0x84/0xb0\n [<0000000055223fcb>] dsa_loop_init+0xa9/0x116 [dsa_loop]\n ...\n\nThere are two reasons for memleak in dsa_loop_init().\n\nFirst, fixed_phy_register() create and register phy_device:\n\nfixed_phy_register()\n get_phy_device()\n phy_device_create() # freed by phy_device_free()\n phy_device_register() # freed by phy_device_remove()\n\nBut fixed_phy_unregister() only calls phy_device_remove().\nSo the memory allocated in phy_device_create() is leaked.\n\nSecond, when mdio_driver_register() fail in dsa_loop_init(),\nit just returns and there is no cleanup for phydevs.\n\nFix the problems by catching the error of mdio_driver_register()\nin dsa_loop_init(), then calling both fixed_phy_unregister() and\nphy_device_free() to release phydevs.\nAlso add a function for phydevs cleanup to avoid duplacate."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.299", "versionStartIncluding": "4.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": 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"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1D67A077-EB45-4ADE-94CD-F9A76F6C319C", "versionEndExcluding": "5.4.224", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "475D097C-AB5A-4CF5-899F-413077854ABD", "versionEndExcluding": "5.10.154", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AB8B27B9-B41B-42D5-AE67-0A89A8A8EEB1", "versionEndExcluding": "5.15.78", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "EC9A754E-625D-42F3-87A7-960D643E2867", "versionEndExcluding": "6.0.8", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: Fix possible memory leaks in dsa_loop_init()\n\nkmemleak reported memory leaks in dsa_loop_init():\n\nkmemleak: 12 new suspected memory leaks\n\nunreferenced object 0xffff8880138ce000 (size 2048):\n comm \"modprobe\", pid 390, jiffies 4295040478 (age 238.976s)\n backtrace:\n [<000000006a94f1d5>] kmalloc_trace+0x26/0x60\n [<00000000a9c44622>] phy_device_create+0x5d/0x970\n [<00000000d0ee2afc>] get_phy_device+0xf3/0x2b0\n [<00000000dca0c71f>] __fixed_phy_register.part.0+0x92/0x4e0\n [<000000008a834798>] fixed_phy_register+0x84/0xb0\n [<0000000055223fcb>] dsa_loop_init+0xa9/0x116 [dsa_loop]\n ...\n\nThere are two reasons for memleak in dsa_loop_init().\n\nFirst, fixed_phy_register() create and register phy_device:\n\nfixed_phy_register()\n get_phy_device()\n phy_device_create() # freed by phy_device_free()\n phy_device_register() # freed by phy_device_remove()\n\nBut fixed_phy_unregister() only calls phy_device_remove().\nSo the memory allocated in phy_device_create() is leaked.\n\nSecond, when mdio_driver_register() fail in dsa_loop_init(),\nit just returns and there is no cleanup for phydevs.\n\nFix the problems by catching the error of mdio_driver_register()\nin dsa_loop_init(), then calling both fixed_phy_unregister() and\nphy_device_free() to release phydevs.\nAlso add a function for phydevs cleanup to avoid duplacate."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: dsa: Se corrigen posibles fugas de memoria en dsa_loop_init() kmemleak inform\u00f3 de fugas de memoria en dsa_loop_init(): kmemleak: 12 nuevas fugas de memoria sospechosas objeto no referenciado 0xffff8880138ce000 (tama\u00f1o 2048): comm \"modprobe\", pid 390, jiffies 4295040478 (edad 238,976 s) backtrace: [&lt;000000006a94f1d5&gt;] kmalloc_trace+0x26/0x60 [&lt;00000000a9c44622&gt;] phy_device_create+0x5d/0x970 [&lt;00000000d0ee2afc&gt;] Hay dos razones para la p\u00e9rdida de memoria en dsa_loop_init(). Primero, fixed_phy_register() crea y registra phy_device: fixed_phy_register() get_phy_device() phy_device_create() # liberado por phy_device_free() phy_device_register() # liberado por phy_device_remove() Pero fixed_phy_unregister() solo llama a phy_device_remove(). Por lo tanto, la memoria asignada en phy_device_create() se filtra. Segundo, cuando mdio_driver_register() falla en dsa_loop_init(), simplemente regresa y no hay limpieza para phydevs. Solucione los problemas capturando el error de mdio_driver_register() en dsa_loop_init(), luego llame a fixed_phy_unregister() y phy_device_free() para liberar phydevs. Tambi\u00e9n agregue una funci\u00f3n para la limpieza de phydevs para evitar la duplicaci\u00f3n."}], "id": "CVE-2022-49926", "lastModified": "2026-06-17T05:19:32.397", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-49926", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T14:56:55.465570Z", "version": "2.0.3"}}]}, "published": "2025-05-01T15:16:18.440", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/37a098fc9b42bd7fce66764866aa514639667b6e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4d2024b138d9f7b02ae13ee997fd3a71e9e46254"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/633efc8b3dc96f56f5a57f2a49764853a2fa3f50"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/935b4beb724946a37cebf97191592d4879d3a3a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9f555b1584fc2d5d16ee3c4d9438e93ac7c502c7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bbc5d7b46a729bfcbb5544f6612b7a67dd4f4d6f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d593e1ede655b74c42e4e4fe285ea64aee96fb5c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-401"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: net: dsa: Fix possible memory leaks in dsa_loop_init()", "id": "2363481", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363481"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-401", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: dsa: Fix possible memory leaks in dsa_loop_init()\nkmemleak reported memory leaks in dsa_loop_init():\nkmemleak: 12 new suspected memory leaks\nunreferenced object 0xffff8880138ce000 (size 2048):\ncomm \"modprobe\", pid 390, jiffies 4295040478 (age 238.976s)\nbacktrace:\n[<000000006a94f1d5>] kmalloc_trace+0x26/0x60\n[<00000000a9c44622>] phy_device_create+0x5d/0x970\n[<00000000d0ee2afc>] get_phy_device+0xf3/0x2b0\n[<00000000dca0c71f>] __fixed_phy_register.part.0+0x92/0x4e0\n[<000000008a834798>] fixed_phy_register+0x84/0xb0\n[<0000000055223fcb>] dsa_loop_init+0xa9/0x116 [dsa_loop]\n...\nThere are two reasons for memleak in dsa_loop_init().\nFirst, fixed_phy_register() create and register phy_device:\nfixed_phy_register()\nget_phy_device()\nphy_device_create() # freed by phy_device_free()\nphy_device_register() # freed by phy_device_remove()\nBut fixed_phy_unregister() only calls phy_device_remove().\nSo the memory allocated in phy_device_create() is leaked.\nSecond, when mdio_driver_register() fail in dsa_loop_init(),\nit just returns and there is no cleanup for phydevs.\nFix the problems by catching the error of mdio_driver_register()\nin dsa_loop_init(), then calling both fixed_phy_unregister() and\nphy_device_free() to release phydevs.\nAlso add a function for phydevs cleanup to avoid duplacate."], "name": "CVE-2022-49926", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49926\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49926\nhttps://lore.kernel.org/linux-cve-announce/2025050110-CVE-2022-49926-d9bc@gregkh/T"], "threat_severity": "Moderate"}

{}