CVE-2023-54050
ubifs: Fix memleak when insert_old_idx() failed
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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.
Timeline
ID reserved
By Linux
Published
- 7 months later
· 7 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < cc29c7216d7f057eb0613b97dc38c7e1962a88d2
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < 6f2eee5457bc48b0426dedfd78cdbdea241a6edb
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < 66e9f2fb3e753f820bec2a98e8c6387029988320
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < 3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < ef9aac603659e9ffe7d69ae16e3f0fc0991a965b
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < 79079cebbeed624b9d01cfcf1e3254ae1a1f6e14
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < a6da0ab9847779e05a7416c7a98148b549de69ef
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < b5fda08ef213352ac2df7447611eb4d383cce929
- affected 2.6.27
- unaffected < 2.6.27
- unaffected 4.19.283 – ≤ 4.19.*
- unaffected 5.4.243 – ≤ 5.4.*
- unaffected 5.10.180 – ≤ 5.10.*
- unaffected 5.15.111 – ≤ 5.15.*
- unaffected 6.1.28 – ≤ 6.1.*
- unaffected 6.2.15 – ≤ 6.2.*
- unaffected 6.3.2 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References (8)
- https://git.kernel.org/stable/c/cc29c7216d7f057eb0613b97dc38c7e1962a88d2 (opens in a new tab)
- https://git.kernel.org/stable/c/6f2eee5457bc48b0426dedfd78cdbdea241a6edb (opens in a new tab)
- https://git.kernel.org/stable/c/66e9f2fb3e753f820bec2a98e8c6387029988320 (opens in a new tab)
- https://git.kernel.org/stable/c/3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d (opens in a new tab)
- https://git.kernel.org/stable/c/ef9aac603659e9ffe7d69ae16e3f0fc0991a965b (opens in a new tab)
- https://git.kernel.org/stable/c/79079cebbeed624b9d01cfcf1e3254ae1a1f6e14 (opens in a new tab)
- https://git.kernel.org/stable/c/a6da0ab9847779e05a7416c7a98148b549de69ef (opens in a new tab)
- https://git.kernel.org/stable/c/b5fda08ef213352ac2df7447611eb4d383cce929 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2023-54050)Record last updated .