CVE-2025-68186
- Source
- https://cve.org/CVERecord?id=CVE-2025-68186
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68186.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-68186
- Downstream
- Published
- 2025-12-16T13:43:03.814Z
- Modified
- 2025-12-16T20:23:08.334681Z
- Summary
- ring-buffer: Do not warn in ring_buffer_map_get_reader() when reader catches up
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Do not warn in ringbuffermapgetreader() when reader catches up
The function ringbuffermapgetreader() is a bit more strict than the other get reader functions, and except for certain situations the rbgetreader_page() should not return NULL. If it does, it triggers a warning.
This warning was triggering but after looking at why, it was because another acceptable situation was happening and it wasn't checked for.
If the reader catches up to the writer and there's still data to be read on the reader page, then the rbgetreader_page() will return NULL as there's no new page to get.
In this situation, the reader page should not be updated and no warning should trigger.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68186.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/6f5c4f8109fa4d0955b3712597a26b310bdc736f
- https://git.kernel.org/stable/c/aa997d2d2a0b2e76f4df0f1f12829f02acb4fb6b
- https://git.kernel.org/stable/c/b42dbef4f208326271434d5ab71c4129a3ddd1a9
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68186.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-68186
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced117c39200d9d760cbd5944bb89efb7b9c51965aaFixedb42dbef4f208326271434d5ab71c4129a3ddd1a9Fixed6f5c4f8109fa4d0955b3712597a26b310bdc736fFixedaa997d2d2a0b2e76f4df0f1f12829f02acb4fb6b
Affected versions
v6.*
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.12.1
v6.12.10
v6.12.11
v6.12.12
v6.12.13
v6.12.14
v6.12.15
v6.12.16
v6.12.17
v6.12.18
v6.12.19
v6.12.2
v6.12.20
v6.12.21
v6.12.22
v6.12.23
v6.12.24
v6.12.25
v6.12.26
v6.12.27
v6.12.28
v6.12.29
v6.12.3
v6.12.30
v6.12.31
v6.12.32
v6.12.33
v6.12.34
v6.12.35
v6.12.36
v6.12.37
v6.12.38
v6.12.39
v6.12.4
v6.12.40
v6.12.41
v6.12.42
v6.12.43
v6.12.44
v6.12.45
v6.12.46
v6.12.47
v6.12.48
v6.12.49
v6.12.5
v6.12.50
v6.12.51
v6.12.52
v6.12.53
v6.12.54
v6.12.55
v6.12.56
v6.12.57
v6.12.6
v6.12.7
v6.12.8
v6.12.9
v6.13
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.14
v6.14-rc1
v6.14-rc2
v6.14-rc3
v6.14-rc4
v6.14-rc5
v6.14-rc6
v6.14-rc7
v6.15
v6.15-rc1
v6.15-rc2
v6.15-rc3
v6.15-rc4
v6.15-rc5
v6.15-rc6
v6.15-rc7
v6.16
v6.16-rc1
v6.16-rc2
v6.16-rc3
v6.16-rc4
v6.16-rc5
v6.16-rc6
v6.16-rc7
v6.17
v6.17-rc1
v6.17-rc2
v6.17-rc3
v6.17-rc4
v6.17-rc5
v6.17-rc6
v6.17-rc7
v6.17.1
v6.17.2
v6.17.3
v6.17.4
v6.17.5
v6.17.6
v6.17.7
v6.18-rc1
v6.18-rc2
v6.18-rc3
v6.9