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vuln-cve/data/2022/49xxx/CVE-2022-49879.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2022-49879",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-05-01T14:05:17.239Z",
"datePublished": "2025-05-01T14:10:27.117Z",
"dateUpdated": "2026-11-05T20:00:10.635Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T19:08:30.756Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix BUG_ON() when directory entry has invalid rec_len\n\nThe rec_len field in the directory entry has to be a multiple of 4. A\ncorrupted filesystem image can be used to hit a BUG() in\next4_rec_len_to_disk(), called from make_indexed_dir().\n\n ------------[ cut here ]------------\n kernel BUG at fs/ext4/ext4.h:2413!\n ...\n RIP: 0010:make_indexed_dir+0x53f/0x5f0\n ...\n Call Trace:\n <TASK>\n ? add_dirent_to_buf+0x1b2/0x200\n ext4_add_entry+0x36e/0x480\n ext4_add_nondir+0x2b/0xc0\n ext4_create+0x163/0x200\n path_openat+0x635/0xe90\n do_filp_open+0xb4/0x160\n ? __create_object.isra.0+0x1de/0x3b0\n ? _raw_spin_unlock+0x12/0x30\n do_sys_openat2+0x91/0x150\n __x64_sys_open+0x6c/0xa0\n do_syscall_64+0x3c/0x80\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe fix simply adds a call to ext4_check_dir_entry() to validate the\ndirectory entry, returning -EFSCORRUPTED if the entry is invalid."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/ext4/namei.c"
],
"versions": [
{
"version": "3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4",
"lessThan": "2fa24d0274fbf913b56ee31f15bc01168669d909",
"status": "affected",
"versionType": "git"
},
{
"version": "3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4",
"lessThan": "156451a67b93986fb07c274ef6995ff40766c5ad",
"status": "affected",
"versionType": "git"
},
{
"version": "3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4",
"lessThan": "999cff2b6ce3b45c08abf793bf55534777421327",
"status": "affected",
"versionType": "git"
},
{
"version": "3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4",
"lessThan": "ce1ee2c8827fb6493e91acbd50f664cf2a972c3d",
"status": "affected",
"versionType": "git"
},
{
"version": "3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4",
"lessThan": "17a0bc9bd697f75cfdf9b378d5eb2d7409c91340",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/ext4/namei.c"
],
"versions": [
{
"version": "2.6.30",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.30",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.4.224",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.154",
"lessThanOrEqual": "5.10.*",
"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": "2.6.30",
"versionEndExcluding": "5.4.224"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.30",
"versionEndExcluding": "5.10.154"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.30",
"versionEndExcluding": "5.15.78"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.30",
"versionEndExcluding": "6.0.8"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.30",
"versionEndExcluding": "6.1"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/2fa24d0274fbf913b56ee31f15bc01168669d909"
},
{
"url": "https://git.kernel.org/stable/c/156451a67b93986fb07c274ef6995ff40766c5ad"
},
{
"url": "https://git.kernel.org/stable/c/999cff2b6ce3b45c08abf793bf55534777421327"
},
{
"url": "https://git.kernel.org/stable/c/ce1ee2c8827fb6493e91acbd50f664cf2a972c3d"
},
{
"url": "https://git.kernel.org/stable/c/17a0bc9bd697f75cfdf9b378d5eb2d7409c91340"
}
],
"title": "ext4: fix BUG_ON() when directory entry has invalid rec_len",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2022-49879",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-05T19:51:06.646371Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-05T20:00:10.635Z"
}
}
]
}
}