CVE-2023-53396
ubifs: Fix memory leak in do_rename
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix memory leak in do_rename If renaming a file in an encrypted directory, function fscrypt_setup_filename allocates memory for a file name. This name is never used, and before returning to the caller the memory for it is not freed. When running kmemleak on it we see that it is registered as a leak. The report below is triggered by a simple program 'rename' that renames a file in an encrypted directory: unreferenced object 0xffff888101502840 (size 32): comm "rename", pid 9404, jiffies 4302582475 (age 435.735s) backtrace: __kmem_cache_alloc_node __kmalloc fscrypt_setup_filename do_rename ubifs_rename vfs_rename do_renameat2 To fix this we can remove the call to fscrypt_setup_filename as it's not needed.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 8 months later
· 8 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.15% · top 96% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected c67bc98d1f0853bb196e9c48eab38b6f2ddab795 – < 43b2f7d690697182beed6f71aa57b7249d3cfc9c
- affected 278d9a243635f26c05ad95dcf9c5a593b9e04dc6 – < 9f565752b328fe53c9e42b7d4e4d89a1da63d738
- affected 278d9a243635f26c05ad95dcf9c5a593b9e04dc6 – < 7e264f67b7d6580eff5c2696961039fd05c69258
- affected 278d9a243635f26c05ad95dcf9c5a593b9e04dc6 – < 517ddc0259d7a7231486bdafde8035c478bc4088
- affected 278d9a243635f26c05ad95dcf9c5a593b9e04dc6 – < 3a36d20e012903f45714df2731261fdefac900cb
- affected 17495eb2f7f08113b50aba298c2c1a045824c4f7
- affected 868de33a39e0e1e91ed3ce4a23a65f30144d2443
- affected 5.15.33 – < 5.15.112
- affected 5.16.19 – < 5.17
- affected 5.17.2 – < 5.18
- affected 5.18
- unaffected < 5.18
- unaffected 5.15.112 – ≤ 5.15.*
- unaffected 6.1.28 – ≤ 6.1.*
- unaffected 6.2.15 – ≤ 6.2.*
- unaffected 6.3.2 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References (5)
- https://git.kernel.org/stable/c/43b2f7d690697182beed6f71aa57b7249d3cfc9c (opens in a new tab)
- https://git.kernel.org/stable/c/9f565752b328fe53c9e42b7d4e4d89a1da63d738 (opens in a new tab)
- https://git.kernel.org/stable/c/7e264f67b7d6580eff5c2696961039fd05c69258 (opens in a new tab)
- https://git.kernel.org/stable/c/517ddc0259d7a7231486bdafde8035c478bc4088 (opens in a new tab)
- https://git.kernel.org/stable/c/3a36d20e012903f45714df2731261fdefac900cb (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)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-53396)Record last updated .