media: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: media: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure kthread_run() returns an ERR_PTR on failure, not NULL. When start_streaming() fails, data->kthread_vid_cap is left holding this error pointer instead of being cleared. This causes two subsequent bugs: 1. A future call to start_streaming() sees a non-NULL kthread_vid_cap and returns 0 (success) immediately, without actually starting the capture thread. 2. A call to stop_streaming() checks 'kthread_vid_cap == NULL' which is false for an error pointer, and proceeds to call kthread_stop() on the error pointer, leading to a kernel crash. Fix this by resetting kthread_vid_cap to NULL on failure before jumping to the error path.
References
- https://git.kernel.org/stable/c/db0f4531aa55cfb0171684ebfffe3ff04b79d5a8
- https://git.kernel.org/stable/c/0fac63cac6689588da530764ccb6ba55ee8e4d8b
- https://git.kernel.org/stable/c/5c35d380bea60503c4fe0986fe1de6a3263282b3
- https://git.kernel.org/stable/c/3d1b10d81fe54852ed953f4129577b733bbd6907
- https://git.kernel.org/stable/c/968c5213e34c48d35febdfd09cf3dc58ad039140
- https://git.kernel.org/stable/c/52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6
- https://git.kernel.org/stable/c/0e7f2cd72a4f9268ee09a13b13f3339e7cc71557
- https://git.kernel.org/stable/c/76e379754ba618989f6215be608d5c04774a611d
European references
- ENISA EUVD · EUVD-2026-80471
- GCVE · GCVE-0-2026-89871
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 5cebaac609744414463d1ecc28fdecd26c1b9bc1 < db0f4531aa55cfb0171684ebfffe3ff04b79d5a8 ; affected 5cebaac609744414463d1ecc28fdecd26c1b9bc1 < 0fac63cac6689588da530764ccb6ba55ee8e4d8b ; affected 5cebaac609744414463d1ecc28fdecd26c1b9bc1 < 5c35d380bea60503c4fe0986fe1de6a3263282b3 ; affected 5cebaac609744414463d1ecc28fdecd26c1b9bc1 < 3d1b10d81fe54852ed953f4129577b733bbd6907 ; affected 5cebaac609744414463d1ecc28fdecd26c1b9bc1 < 968c5213e34c48d35febdfd09cf3dc58ad039140 ; affected 5cebaac609744414463d1ecc28fdecd26c1b9bc1 < 52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6 |
| Linux · Linux | affected 4.18 ; unaffected 0 < 4.18 ; unaffected 5.10.270 ≤ 5.10.* ; unaffected 5.15.221 ≤ 5.15.* ; unaffected 6.1.188 ≤ 6.1.* ; unaffected 6.6.157 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |