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vuln-cve/data/2023/53xxx/CVE-2023-53468.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2023-53468",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-10-01T11:39:39.400Z",
"datePublished": "2025-10-01T11:42:38.673Z",
"dateUpdated": "2026-05-11T19:45:35.279Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T19:45:35.279Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memory leak in alloc_wbufs()\n\nkmemleak reported a sequence of memory leaks, and show them as following:\n\n unreferenced object 0xffff8881575f8400 (size 1024):\n comm \"mount\", pid 19625, jiffies 4297119604 (age 20.383s)\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [<ffffffff8176cecd>] __kmalloc+0x4d/0x150\n [<ffffffffa0406b2b>] ubifs_mount+0x307b/0x7170 [ubifs]\n [<ffffffff819fa8fd>] legacy_get_tree+0xed/0x1d0\n [<ffffffff81936f2d>] vfs_get_tree+0x7d/0x230\n [<ffffffff819b2bd4>] path_mount+0xdd4/0x17b0\n [<ffffffff819b37aa>] __x64_sys_mount+0x1fa/0x270\n [<ffffffff83c14295>] do_syscall_64+0x35/0x80\n [<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\n unreferenced object 0xffff8881798a6e00 (size 512):\n comm \"mount\", pid 19677, jiffies 4297121912 (age 37.816s)\n hex dump (first 32 bytes):\n 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk\n 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk\n backtrace:\n [<ffffffff8176cecd>] __kmalloc+0x4d/0x150\n [<ffffffffa0418342>] ubifs_wbuf_init+0x52/0x480 [ubifs]\n [<ffffffffa0406ca5>] ubifs_mount+0x31f5/0x7170 [ubifs]\n [<ffffffff819fa8fd>] legacy_get_tree+0xed/0x1d0\n [<ffffffff81936f2d>] vfs_get_tree+0x7d/0x230\n [<ffffffff819b2bd4>] path_mount+0xdd4/0x17b0\n [<ffffffff819b37aa>] __x64_sys_mount+0x1fa/0x270\n [<ffffffff83c14295>] do_syscall_64+0x35/0x80\n [<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe problem is that the ubifs_wbuf_init() returns an error in the\nloop which in the alloc_wbufs(), then the wbuf->buf and wbuf->inodes\nthat were successfully alloced before are not freed.\n\nFix it by adding error hanging path in alloc_wbufs() which frees\nthe memory alloced before when ubifs_wbuf_init() returns an error."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/ubifs/super.c"
],
"versions": [
{
"version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
"lessThan": "1f206002c6bc302bface871ef3f72c0bbcaa931c",
"status": "affected",
"versionType": "git"
},
{
"version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
"lessThan": "bf50229494f0443b3f08427d7df63e5a7e2a796a",
"status": "affected",
"versionType": "git"
},
{
"version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
"lessThan": "3e29634eb56e6547272fe4e568f63421f8b3b9fa",
"status": "affected",
"versionType": "git"
},
{
"version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
"lessThan": "26ec45f1c504e15268383019df139d7983f1e67f",
"status": "affected",
"versionType": "git"
},
{
"version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
"lessThan": "e11f36d3bc4d23f620754a948fe7b82b63dcb185",
"status": "affected",
"versionType": "git"
},
{
"version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
"lessThan": "4a1ff3c5d04b9079b4f768d9a71b51c4af578dd2",
"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/ubifs/super.c"
],
"versions": [
{
"version": "2.6.27",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.27",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.4.235",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.173",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.100",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.18",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.2.5",
"lessThanOrEqual": "6.2.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.3",
"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": "2.6.27",
"versionEndExcluding": "5.4.235"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.27",
"versionEndExcluding": "5.10.173"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.27",
"versionEndExcluding": "5.15.100"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.27",
"versionEndExcluding": "6.1.18"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.27",
"versionEndExcluding": "6.2.5"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.27",
"versionEndExcluding": "6.3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/1f206002c6bc302bface871ef3f72c0bbcaa931c"
},
{
"url": "https://git.kernel.org/stable/c/bf50229494f0443b3f08427d7df63e5a7e2a796a"
},
{
"url": "https://git.kernel.org/stable/c/3e29634eb56e6547272fe4e568f63421f8b3b9fa"
},
{
"url": "https://git.kernel.org/stable/c/26ec45f1c504e15268383019df139d7983f1e67f"
},
{
"url": "https://git.kernel.org/stable/c/e11f36d3bc4d23f620754a948fe7b82b63dcb185"
},
{
"url": "https://git.kernel.org/stable/c/4a1ff3c5d04b9079b4f768d9a71b51c4af578dd2"
}
],
"title": "ubifs: Fix memory leak in alloc_wbufs()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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