{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2024-35849", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.105Z", "datePublished": "2024-05-17T14:47:27.486Z", "dateUpdated": "2026-01-05T10:35:25.159Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-01-05T10:35:25.159Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix information leak in btrfs_ioctl_logical_to_ino()\n\nSyzbot reported the following information leak for in\nbtrfs_ioctl_logical_to_ino():\n\n BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x110 lib/usercopy.c:40\n instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n _copy_to_user+0xbc/0x110 lib/usercopy.c:40\n copy_to_user include/linux/uaccess.h:191 [inline]\n btrfs_ioctl_logical_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3499\n btrfs_ioctl+0x714/0x1260\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:904 [inline]\n __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890\n __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890\n x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n Uninit was created at:\n __kmalloc_large_node+0x231/0x370 mm/slub.c:3921\n __do_kmalloc_node mm/slub.c:3954 [inline]\n __kmalloc_node+0xb07/0x1060 mm/slub.c:3973\n kmalloc_node include/linux/slab.h:648 [inline]\n kvmalloc_node+0xc0/0x2d0 mm/util.c:634\n kvmalloc include/linux/slab.h:766 [inline]\n init_data_container+0x49/0x1e0 fs/btrfs/backref.c:2779\n btrfs_ioctl_logical_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3480\n btrfs_ioctl+0x714/0x1260\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:904 [inline]\n __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890\n __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890\n x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n Bytes 40-65535 of 65536 are uninitialized\n Memory access of size 65536 starts at ffff888045a40000\n\nThis happens, because we're copying a 'struct btrfs_data_container' back\nto user-space. This btrfs_data_container is allocated in\n'init_data_container()' via kvmalloc(), which does not zero-fill the\nmemory.\n\nFix this by using kvzalloc() which zeroes out the memory on allocation."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/backref.c"], "versions": [{"version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "689efe22e9b5b7d9d523119a9a5c3c17107a0772", "status": "affected", "versionType": "git"}, {"version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "73db209dcd4ae026021234d40cfcb2fb5b564b86", "status": "affected", "versionType": "git"}, {"version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "30189e54ba80e3209d34cfeea87b848f6ae025e6", "status": "affected", "versionType": "git"}, {"version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "e58047553a4e859dafc8d1d901e1de77c9dd922d", 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"ssvc", "content": {"id": "CVE-2024-35849", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-23T19:26:21.803612Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:34:01.668Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:48.438Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d", "tags": 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{"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:48.438Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-35849", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-23T19:26:21.803612Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-23T19:26:26.188Z"}, "title": "CISA ADP Vulnrichment"}], "cna": {"title": "btrfs: fix information leak in btrfs_ioctl_logical_to_ino()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "689efe22e9b5b7d9d523119a9a5c3c17107a0772", "versionType": "git"}, {"status": "affected", "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "73db209dcd4ae026021234d40cfcb2fb5b564b86", "versionType": "git"}, {"status": "affected", "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "30189e54ba80e3209d34cfeea87b848f6ae025e6", "versionType": "git"}, {"status": "affected", "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "e58047553a4e859dafc8d1d901e1de77c9dd922d", "versionType": "git"}, {"status": "affected", "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "8bdbcfaf3eac42f98e5486b3d7e130fa287811f6", "versionType": "git"}, {"status": "affected", "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc", "versionType": "git"}, {"status": "affected", "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "fddc19631c51d9c17d43e9f822a7bc403af88d54", "versionType": "git"}, {"status": "affected", "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "lessThan": "2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf", "versionType": "git"}], "programFiles": ["fs/btrfs/backref.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.2"}, {"status": "unaffected", "version": "0", "lessThan": "3.2", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.313", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.275", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.216", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.158", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.90", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.30", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.8.9", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/btrfs/backref.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772"}, {"url": "https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86"}, {"url": "https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6"}, {"url": "https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d"}, {"url": "https://git.kernel.org/stable/c/8bdbcfaf3eac42f98e5486b3d7e130fa287811f6"}, {"url": "https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc"}, {"url": "https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54"}, {"url": "https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix information leak in btrfs_ioctl_logical_to_ino()\n\nSyzbot reported the following information leak for in\nbtrfs_ioctl_logical_to_ino():\n\n BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x110 lib/usercopy.c:40\n instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n _copy_to_user+0xbc/0x110 lib/usercopy.c:40\n copy_to_user include/linux/uaccess.h:191 [inline]\n btrfs_ioctl_logical_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3499\n btrfs_ioctl+0x714/0x1260\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:904 [inline]\n __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890\n __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890\n x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n Uninit was created at:\n __kmalloc_large_node+0x231/0x370 mm/slub.c:3921\n __do_kmalloc_node mm/slub.c:3954 [inline]\n __kmalloc_node+0xb07/0x1060 mm/slub.c:3973\n kmalloc_node include/linux/slab.h:648 [inline]\n kvmalloc_node+0xc0/0x2d0 mm/util.c:634\n kvmalloc include/linux/slab.h:766 [inline]\n init_data_container+0x49/0x1e0 fs/btrfs/backref.c:2779\n btrfs_ioctl_logical_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3480\n btrfs_ioctl+0x714/0x1260\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:904 [inline]\n __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890\n __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890\n x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n Bytes 40-65535 of 65536 are uninitialized\n Memory access of size 65536 starts at ffff888045a40000\n\nThis happens, because we're copying a 'struct btrfs_data_container' back\nto user-space. This btrfs_data_container is allocated in\n'init_data_container()' via kvmalloc(), which does not zero-fill the\nmemory.\n\nFix this by using kvzalloc() which zeroes out the memory on allocation."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.313", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.275", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.216", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.158", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.90", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.30", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8.9", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.9", "versionStartIncluding": "3.2"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-01-05T10:35:25.159Z"}}}, "cveMetadata": {"cveId": "CVE-2024-35849", "state": "PUBLISHED", "dateUpdated": "2026-01-05T10:35:25.159Z", "dateReserved": "2024-05-17T13:50:33.105Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-17T14:47:27.486Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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This btrfs_data_container is allocated in\n'init_data_container()' via kvmalloc(), which does not zero-fill the\nmemory.\n\nFix this by using kvzalloc() which zeroes out the memory on allocation."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: btrfs: corrige la fuga de informaci\u00f3n en btrfs_ioctl_logic_to_ino() Syzbot inform\u00f3 la siguiente fuga de informaci\u00f3n en btrfs_ioctl_logic_to_ino(): ERROR: KMSAN: kernel-infoleak en instrument_copy_to_user include/linux/instrumented.h: 114 [en l\u00ednea] ERROR: KMSAN: kernel-infoleak en _copy_to_user+0xbc/0x110 lib/usercopy.c:40 instrument_copy_to_user include/linux/instrumented.h:114 [en l\u00ednea] _copy_to_user+0xbc/0x110 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [en l\u00ednea] btrfs_ioctl_logic_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3499 btrfs_ioctl+0x714/0x1260 vfs_ioctl fs/ioctl.c:51 [en l\u00ednea] __do_sys_ioctl fs/ioctl.c :904 [en l\u00ednea] __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890 x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h: 17 do_syscall_x64 arco/ x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit se cre\u00f3 en: __kmalloc_large_node+0x231/0x370 mm/slub.c:3921 __do_kmalloc_node mm/slub.c:3954 [en l\u00ednea] __kmalloc_node+0xb07/0x1060 mm/slub.c:3973 kmalloc_node include/linux/slab.h:648 [en l\u00ednea] kvmalloc_node+0xc0/0x2d0 mm/util.c:634 kvmalloc incluye /linux/slab.h:766 [en l\u00ednea] init_data_container+0x49/0x1e0 fs/btrfs/backref.c:2779 btrfs_ioctl_logic_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3480 btrfs_ioctl+0x714/0x1260 ctl fs/ioctl.c :51 [en l\u00ednea] __do_sys_ioctl fs/ioctl.c:904 [en l\u00ednea] __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890 x64_sys_call+0x1883/0x Arco 3b50/x86/incluye /generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x77/0x7f Bytes 40-65535 de 65536 no est\u00e1n inicializados El acceso a la memoria de tama\u00f1o 65536 comienza en ffff888045a40000. Esto sucede porque estamos copiando una 'estructura btrfs_data_container' nuevamente al espacio de usuario. Este btrfs_data_container se asigna en 'init_data_container()' a trav\u00e9s de kvmalloc(), que no llena la memoria con ceros. Solucione este problema usando kvzalloc() que pone a cero la memoria al asignarla."}], "id": "CVE-2024-35849", "lastModified": "2025-02-03T16:23:16.717", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-05-17T15:15:21.777", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8bdbcfaf3eac42f98e5486b3d7e130fa287811f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8bdbcfaf3eac42f98e5486b3d7e130fa287811f6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: btrfs: fix information leak in btrfs_ioctl_logical_to_ino()", "id": "2281263", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281263"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: fix information leak in btrfs_ioctl_logical_to_ino()\nSyzbot reported the following information leak for in\nbtrfs_ioctl_logical_to_ino():\nBUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]\nBUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x110 lib/usercopy.c:40\ninstrument_copy_to_user include/linux/instrumented.h:114 [inline]\n_copy_to_user+0xbc/0x110 lib/usercopy.c:40\ncopy_to_user include/linux/uaccess.h:191 [inline]\nbtrfs_ioctl_logical_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3499\nbtrfs_ioctl+0x714/0x1260\nvfs_ioctl fs/ioctl.c:51 [inline]\n__do_sys_ioctl fs/ioctl.c:904 [inline]\n__se_sys_ioctl+0x261/0x450 fs/ioctl.c:890\n__x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890\nx64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nUninit was created at:\n__kmalloc_large_node+0x231/0x370 mm/slub.c:3921\n__do_kmalloc_node mm/slub.c:3954 [inline]\n__kmalloc_node+0xb07/0x1060 mm/slub.c:3973\nkmalloc_node include/linux/slab.h:648 [inline]\nkvmalloc_node+0xc0/0x2d0 mm/util.c:634\nkvmalloc include/linux/slab.h:766 [inline]\ninit_data_container+0x49/0x1e0 fs/btrfs/backref.c:2779\nbtrfs_ioctl_logical_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3480\nbtrfs_ioctl+0x714/0x1260\nvfs_ioctl fs/ioctl.c:51 [inline]\n__do_sys_ioctl fs/ioctl.c:904 [inline]\n__se_sys_ioctl+0x261/0x450 fs/ioctl.c:890\n__x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890\nx64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nBytes 40-65535 of 65536 are uninitialized\nMemory access of size 65536 starts at ffff888045a40000\nThis happens, because we're copying a 'struct btrfs_data_container' back\nto user-space. This btrfs_data_container is allocated in\n'init_data_container()' via kvmalloc(), which does not zero-fill the\nmemory.\nFix this by using kvzalloc() which zeroes out the memory on allocation."], "name": "CVE-2024-35849", "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": "2024-05-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35849\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35849\nhttps://lore.kernel.org/linux-cve-announce/2024051739-CVE-2024-35849-d74e@gregkh/T"], "threat_severity": "Low"}

{}