CVE-2023-54050 (GCVE-0-2023-54050)
Vulnerability from cvelistv5
Published
2025-12-24 12:23
Modified
2025-12-24 12:23
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ubifs: Fix memleak when insert_old_idx() failed
Following process will cause a memleak for copied up znode:
dirty_cow_znode
zn = copy_znode(c, znode);
err = insert_old_idx(c, zbr->lnum, zbr->offs);
if (unlikely(err))
return ERR_PTR(err); // No one refers to zn.
Fetch a reproducer in [Link].
Function copy_znode() is split into 2 parts: resource allocation
and znode replacement, insert_old_idx() is split in similar way,
so resource cleanup could be done in error handling path without
corrupting metadata(mem & disk).
It's okay that old index inserting is put behind of add_idx_dirt(),
old index is used in layout_leb_in_gaps(), so the two processes do
not depend on each other.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d Version: 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d Version: 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d Version: 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d Version: 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d Version: 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d Version: 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d Version: 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d |
||
{
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},
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"version": "4.19.283",
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},
{
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"version": "5.4.243",
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},
{
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"version": "5.10.180",
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},
{
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"version": "5.15.111",
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},
{
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},
{
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"version": "6.2.15",
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},
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},
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"version": "6.4",
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}
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}
],
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memleak when insert_old_idx() failed\n\nFollowing process will cause a memleak for copied up znode:\n\ndirty_cow_znode\n zn = copy_znode(c, znode);\n err = insert_old_idx(c, zbr-\u003elnum, zbr-\u003eoffs);\n if (unlikely(err))\n return ERR_PTR(err); // No one refers to zn.\n\nFetch a reproducer in [Link].\n\nFunction copy_znode() is split into 2 parts: resource allocation\nand znode replacement, insert_old_idx() is split in similar way,\nso resource cleanup could be done in error handling path without\ncorrupting metadata(mem \u0026 disk).\nIt\u0027s okay that old index inserting is put behind of add_idx_dirt(),\nold index is used in layout_leb_in_gaps(), so the two processes do\nnot depend on each other."
}
],
"providerMetadata": {
"dateUpdated": "2025-12-24T12:23:00.366Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
{
"url": "https://git.kernel.org/stable/c/cc29c7216d7f057eb0613b97dc38c7e1962a88d2"
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{
"url": "https://git.kernel.org/stable/c/6f2eee5457bc48b0426dedfd78cdbdea241a6edb"
},
{
"url": "https://git.kernel.org/stable/c/66e9f2fb3e753f820bec2a98e8c6387029988320"
},
{
"url": "https://git.kernel.org/stable/c/3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d"
},
{
"url": "https://git.kernel.org/stable/c/ef9aac603659e9ffe7d69ae16e3f0fc0991a965b"
},
{
"url": "https://git.kernel.org/stable/c/79079cebbeed624b9d01cfcf1e3254ae1a1f6e14"
},
{
"url": "https://git.kernel.org/stable/c/a6da0ab9847779e05a7416c7a98148b549de69ef"
},
{
"url": "https://git.kernel.org/stable/c/b5fda08ef213352ac2df7447611eb4d383cce929"
}
],
"title": "ubifs: Fix memleak when insert_old_idx() failed",
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}
}
},
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"assignerShortName": "Linux",
"cveId": "CVE-2023-54050",
"datePublished": "2025-12-24T12:23:00.366Z",
"dateReserved": "2025-12-24T12:21:05.090Z",
"dateUpdated": "2025-12-24T12:23:00.366Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2023-54050\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:06.670\",\"lastModified\":\"2025-12-24T13:16:06.670\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nubifs: Fix memleak when insert_old_idx() failed\\n\\nFollowing process will cause a memleak for copied up znode:\\n\\ndirty_cow_znode\\n zn = copy_znode(c, znode);\\n err = insert_old_idx(c, zbr-\u003elnum, zbr-\u003eoffs);\\n if (unlikely(err))\\n return ERR_PTR(err); // No one refers to zn.\\n\\nFetch a reproducer in [Link].\\n\\nFunction copy_znode() is split into 2 parts: resource allocation\\nand znode replacement, insert_old_idx() is split in similar way,\\nso resource cleanup could be done in error handling path without\\ncorrupting metadata(mem \u0026 disk).\\nIt\u0027s okay that old index inserting is put behind of add_idx_dirt(),\\nold index is used in layout_leb_in_gaps(), so the two processes do\\nnot depend on each other.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/66e9f2fb3e753f820bec2a98e8c6387029988320\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6f2eee5457bc48b0426dedfd78cdbdea241a6edb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/79079cebbeed624b9d01cfcf1e3254ae1a1f6e14\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a6da0ab9847779e05a7416c7a98148b549de69ef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b5fda08ef213352ac2df7447611eb4d383cce929\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cc29c7216d7f057eb0613b97dc38c7e1962a88d2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ef9aac603659e9ffe7d69ae16e3f0fc0991a965b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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