CVE-2026-68216
media: pwc: Return queued buffers on start_streaming() failure
En bref
- Source
- NVD
- EPSS
- EPSS 0.18 % · centile 7 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: media: pwc: Return queued buffers on start_streaming() failure The vb2 framework hands buffers to the driver via buf_queue() before calling start_streaming(). If start_streaming() returns an error without first returning those buffers via vb2_buffer_done(), vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued buffers leak. pwc's start_streaming() had two early returns that hit this trap: -ENODEV when the USB device was already disconnected, and -ERESTARTSYS when mutex_lock_interruptible() was interrupted by a signal. Call the existing pwc_cleanup_queued_bufs() helper with VB2_BUF_STATE_QUEUED before returning (matching the state already used by the pwc_isoc_init() error path in the same function). This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo: Return queued buffers on start_streaming() failure").
Faiblesses (CWE)
- CWE-401 — Mémoire non libérée après sa durée de vie utile
Références
- https://git.kernel.org/stable/c/d552852bf76b7dfb35b4593fc874d8dd2f1b1bf3
- https://git.kernel.org/stable/c/0362ae30b61b3053ee3095c1b8f179197ec4f539
- https://git.kernel.org/stable/c/fa78e590852751d3ad32f33f6b4e210fe6ccbe9b
- https://git.kernel.org/stable/c/f2f9fcacd81953dde6cb86312ab13ca13e689664
- https://git.kernel.org/stable/c/5d7cc2634c3843a1414a0f6407aa17f1f91dee60
- https://git.kernel.org/stable/c/cb16b79a2be2cec9c3ebe4147490817c4d8b1de3
- https://git.kernel.org/stable/c/a4f8f629983f643333e49df90557805469bcbb25
- https://git.kernel.org/stable/c/975b2ee20e569d47821e4f6c9761b4664d48a6a4
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-55317
- GCVE · GCVE-0-2026-68216
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1255 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1202 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1164 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1163 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1069 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 < d552852bf76b7dfb35b4593fc874d8dd2f1b1bf3 ; affected ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 < 0362ae30b61b3053ee3095c1b8f179197ec4f539 ; affected ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 < fa78e590852751d3ad32f33f6b4e210fe6ccbe9b ; affected ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 < f2f9fcacd81953dde6cb86312ab13ca13e689664 ; affected ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 < 5d7cc2634c3843a1414a0f6407aa17f1f91dee60 ; affected ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 < cb16b79a2be2cec9c3ebe4147490817c4d8b1de3 |
| Linux · Linux | affected 3.5 ; unaffected 0 < 3.5 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.148 ≤ 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 |