CVE-2025-38692exfat: add cluster chain loop check for dir
- 5.5MediumCVSS base score
- 0.17%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: exfat: add cluster chain loop check for dir An infinite loop may occur if the following conditions occur due to file system corruption. (1) Condition for exfat_count_dir_entries() to loop infinitely. - The cluster chain includes a loop. - There is no UNUSED entry in the cluster chain. (2) Condition for exfat_create_upcase_table() to loop infinitely. - The cluster chain of the root directory includes a loop. - There are no UNUSED entry and up-case table entry in the cluster chain of the root directory. (3) Condition for exfat_load_bitmap() to loop infinitely. - The cluster chain of the root directory includes a loop. - There are no UNUSED entry and bitmap entry in the cluster chain of the root directory. (4) Condition for exfat_find_dir_entry() to loop infinitely. - The cluster chain includes a loop. - The unused directory entries were exhausted by some operation. (5) Condition for exfat_check_dir_empty() to loop infinitely. - The cluster chain includes a loop. - The unused directory entries were exhausted by some operation. - All files and sub-directories under the directory are deleted. This commit adds checks to break the above infinite loop.
Timeline
ID reserved
By Linux
- 5 months later
· 5 months later
Published
- 14 months later
· 14 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 |
|---|---|---|---|
| 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)
- 0.17% · top 94% of all CVEs (15 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.
Affected products
- affected 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 – < 1715f0996f7baf817c73613aeda500c4f73a6bd6
- affected 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 – < 868f23286c1a13162330fa6c614fe350f78e3f82
- affected 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 – < aa8fe7b7b73d4c9a41bb96cb3fb3092f794ecb33
- affected 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 – < e2066ca3ef49a30920d8536fa366b2a183a808ee
- affected 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 – < 4c3cda20c4cf1871e27868d08fda06b79bc7d568
- affected 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 – < 99f9a97dce39ad413c39b92c90393bbd6778f3fd
- affected 5.7
- unaffected < 5.7
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.103 – ≤ 6.6.*
- unaffected 6.12.43 – ≤ 6.12.*
- unaffected 6.15.11 – ≤ 6.15.*
- unaffected 6.16.2 – ≤ 6.16.*
- unaffected 6.17 – ≤ *
References
References6
- https://git.kernel.org/stable/c/1715f0996f7baf817c73613aeda500c4f73a6bd6 (opens in a new tab)
- https://git.kernel.org/stable/c/868f23286c1a13162330fa6c614fe350f78e3f82 (opens in a new tab)
- https://git.kernel.org/stable/c/aa8fe7b7b73d4c9a41bb96cb3fb3092f794ecb33 (opens in a new tab)
- https://git.kernel.org/stable/c/e2066ca3ef49a30920d8536fa366b2a183a808ee (opens in a new tab)
- https://git.kernel.org/stable/c/4c3cda20c4cf1871e27868d08fda06b79bc7d568 (opens in a new tab)
- https://git.kernel.org/stable/c/99f9a97dce39ad413c39b92c90393bbd6778f3fd (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)
- EUVD EUVD-2025-26777 (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://cveledger.app/cve/CVE-2025-38692)Record last updated .