ext4: avoid OOB when system.data xattr changes underneath the filesystem
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid OOB when system.data xattr changes underneath the filesystem When looking up for an entry in an inlined directory, if e_value_offs is changed underneath the filesystem by some change in the block device, it will lead to an out-of-bounds access that KASAN detects as an UAF. EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. loop0: detected capacity change from 2048 to 2047 ================================================================== BUG: KASAN: use-after-free in ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500 Read of size 1 at addr ffff88803e91130f by task syz-executor269/5103 CPU: 0 UID: 0 PID: 5103 Comm: syz-executor269 Not tainted 6.11.0-rc4-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500 ext4_find_inline_entry+0x4be/0x5e0 fs/ext4/inline.c:1697 __ext4_find_entry+0x2b4/0x1b30 fs/ext4/namei.c:1573 ext4_lookup_entry fs/ext4/namei.c:1727 [inline] ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1795 lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1633 filename_create+0x297/0x540 fs/namei.
CVE-2024-47701
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2024-47701
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "e8e948e7802a2ab05c146d3e72a39b93b5718236",
"lessThan": "5b076d37e8d99918e9294bd6b35a8bbb436819b0",
"versionType": "git"
},
{
"status": "affected",
"version": "e8e948e7802a2ab05c146d3e72a39b93b5718236",
"lessThan": "8adf0eb4e361a9e060d54f4bd0ac9c5d85277d20",
"versionType": "git"
},
{
"status": "affected",
"version": "e8e948e7802a2ab05c146d3e72a39b93b5718236",
"lessThan": "7fc22c3b3ffc0e952f5e0062dd11aa6ae76affba",
"versionType": "git"
},
{
"status": "affected",
"version": "e8e948e7802a2ab05c146d3e72a39b93b5718236",
"lessThan": "be2e9b111e2790962cc66a177869b4e9717b4e29",
"versionType": "git"
},
{
"status": "affected",
"version": "e8e948e7802a2ab05c146d3e72a39b93b5718236",
"lessThan": "ea32883e4a03ed575a2eb7a66542022312bde477",
"versionType": "git"
},
{
"status": "affected",
"version": "e8e948e7802a2ab05c146d3e72a39b93b5718236",
"lessThan": "2a6579ef5f2576a940125729f7409cc182f1c8df",
"versionType": "git"
},
{
"status": "affected",
"version": "e8e948e7802a2ab05c146d3e72a39b93b5718236",
"lessThan": "371d0bacecd529f887ea2547333d9173e7bcdc0a",
"versionType": "git"
},
{
"status": "affected",
"version": "e8e948e7802a2ab05c146d3e72a39b93b5718236",
"lessThan": "ccb8c18076e2e630fea23fbec583cdad61787fc5",
"versionType": "git"
},
{
"status": "affected",
"version": "e8e948e7802a2ab05c146d3e72a39b93b5718236",
"lessThan": "c6b72f5d82b1017bad80f9ebf502832fc321d796",
"versionType": "git"
}
],
"programFiles": [
"fs/ext4/inline.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.323",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.285",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.227",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.168",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.113",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.54",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.10.13",
"versionType": "semver",
"lessThanOrEqual": "6.10.*"
},
{
"status": "unaffected",
"version": "6.11.2",
"versionType": "semver",
"lessThanOrEqual": "6.11.*"
},
{
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/ext4/inline.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-47701
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26729 · Revision 1
- Added to Heist Feed
- Publisher date