Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: media: em28xx: fix use-after-free in em28xx_v4l2_open() em28xx_v4l2_open() reads dev->v4l2 without holding dev->lock, creating a race with em28xx_v4l2_init()'s error path and em28xx_v4l2_fini(), both of which free the em28xx_v4l2 struct and set dev->v4l2 to NULL under dev->lock. This race leads to two issues: - use-after-free in v4l2_fh_init() when accessing vdev->ctrl_handler, since the video_device is embedded in the freed em28xx_v4l2 struct. - NULL pointer dereference in em28xx_resolution_set() when accessing v4l2->norm, since dev->v4l2 has been set to NULL. Fix this by moving the mutex_lock() before the dev->v4l2 read and adding a NULL check for dev->v4l2 under the lock.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8139a4d583abad45eb987b5a99b3281b6d435b7e before 3c0283a59e36e3707c4a81f4952e362d31f876b8; affected 8139a4d583abad45eb987b5a99b3281b6d435b7e before 2cbf81f76842e46bdf25823c70e1db4044a65678; affected 8139a4d583abad45eb987b5a99b3281b6d435b7e before 38a327221f7f765e7d853b7bafe47e342441ec85; affected 8139a4d583abad45eb987b5a99b3281b6d435b7e before b5d141ea15f173f15b9f0a72965902f3428c0d92; affected 8139a4d583abad45eb987b5a99b3281b6d435b7e before 5fb2940327722b4684d2f964b54c1c90aa277324; affected 8139a4d583abad45eb987b5a99b3281b6d435b7e before 871b8ea8ef39a6c253594649f4339378fad3d0dd; affected 8139a4d583abad45eb987b5a99b3281b6d435b7e before 6b9e66437cc6123ddedac141e1b8b6fcf57d2972; affected 8139a4d583abad45eb987b5a99b3281b6d435b7e before dd2b888e08d3b3d6aacd65d76cd44fac11da750f; affected 8139a4d583abad45eb987b5a99b3281b6d435b7e before a66485a934c7187ae8e36517d40615fa2e961cff |
| Linux / Linux | affected 3.16; unaffected 0 before 3.16; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.136 through 6.6.*; unaffected 6.12.83 through 6.12.*; unaffected 6.18.24 through 6.18.*; unaffected 6.19.14 through 6.19.*; unaffected 7.0.1 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3c0283a59e36e3707c4a81f4952e362d31f876b8
- https://git.kernel.org/stable/c/2cbf81f76842e46bdf25823c70e1db4044a65678
- https://git.kernel.org/stable/c/38a327221f7f765e7d853b7bafe47e342441ec85
- https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92
- https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324
- https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd
- https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972
- https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f
- https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff
ADP enrichment
No English description supplied.