{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-35849", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-35849", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-05-17T14:47:27.486Z", "updatedAt": "2026-10-15T00:41:05.013Z", "importedAt": "2026-10-24T01:57:11.582Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "btrfs: fix information leak in btrfs_ioctl_logical_to_ino()", "summary": "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": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "status": "affected", "versionType": "git", "lessThan": "689efe22e9b5b7d9d523119a9a5c3c17107a0772" }, { "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "status": "affected", "versionType": "git", "lessThan": "73db209dcd4ae026021234d40cfcb2fb5b564b86" }, { "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "status": "affected", "versionType": "git", "lessThan": "30189e54ba80e3209d34cfeea87b848f6ae025e6" }, { "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "status": "affected", "versionType": "git", "lessThan": "e58047553a4e859dafc8d1d901e1de77c9dd922d" }, { "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "status": "affected", "versionType": "git", "lessThan": "8bdbcfaf3eac42f98e5486b3d7e130fa287811f6" }, { "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "status": "affected", "versionType": "git", "lessThan": "3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc" }, { "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "status": "affected", "versionType": "git", "lessThan": "fddc19631c51d9c17d43e9f822a7bc403af88d54" }, { "version": "a542ad1bafc7df9fc16de8a6894b350a4df75572", "status": "affected", "versionType": "git", "lessThan": "2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "3.2", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "3.2" }, { "version": "4.19.313", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.275", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.216", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.158", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.90", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.30", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.8.9", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.8.*" }, { "version": "6.9", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }