Description
In the Linux kernel, the following vulnerability has been resolved:
media: i2c: ov7740: fix use-after-destroy in remove
The ov7740_remove() function had a severe teardown order bug where it destroyed the driver's mutex before freeing the V4L2 control handler which relies on that mutex, leading to a use-after-destroy kernel panic. Furthermore, the driver explicitly called v4l2_ctrl_handler_free() and mutex_destroy() sequentially, but then called ov7740_free_controls() which invokes both of them a second time, resulting in a double-free.
This patch fixes the issue by unregistering the subdevice first, and relying exclusively on ov7740_free_controls() to safely tear down the mutex and control handler in the correct order.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 39c5c4471b8d793daf868bd004e56ed420e89707, < 9e4693436c7dcf8584002500ce4b434b79bbf9ed; >= 39c5c4471b8d793daf868bd004e56ed420e89707, < 81e9765878d3ac8ad18e3a683332b5d6bc3a0e33; >= 39c5c4471b8d793daf868bd004e56ed420e89707, < 8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e; >= 39c5c4471b8d793daf868bd004e56ed420e89707, < 7512838a19af0a284a58435292243fad21e57ff1; >= 39c5c4471b8d793daf868bd004e56ed420e89707, < 25e2505866c577db2661e4d431f0907c6ec9a3b4; >= 39c5c4471b8d793daf868bd004e56ed420e89707, < af81f35e4f429e769b784754e1aa4d7a922470ac; >= 39c5c4471b8d793daf868bd004e56ed420e89707, < 09453b467990e8ef8fe09f45a685f9a625248d33; >= 39c5c4471b8d793daf868bd004e56ed420e89707, < 5d1b3dea5a44124bab6c14a2d71b977dabed54e7 |
| Linux | Linux | 4.16 |
References
- https://git.kernel.org/stable/c/09453b467990e8ef8fe09f45a685f9a625248d33
- https://git.kernel.org/stable/c/25e2505866c577db2661e4d431f0907c6ec9a3b4
- https://git.kernel.org/stable/c/5d1b3dea5a44124bab6c14a2d71b977dabed54e7
- https://git.kernel.org/stable/c/7512838a19af0a284a58435292243fad21e57ff1
- https://git.kernel.org/stable/c/81e9765878d3ac8ad18e3a683332b5d6bc3a0e33
- https://git.kernel.org/stable/c/8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e
- https://git.kernel.org/stable/c/9e4693436c7dcf8584002500ce4b434b79bbf9ed
- https://git.kernel.org/stable/c/af81f35e4f429e769b784754e1aa4d7a922470ac
Timeline
- Published
- Sep 16, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received