Answer in brief
CVE-2026-31583 records a Unknown severity vulnerability in media: em28xx: fix use-after-free in em28xx_v4l2_open(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8139a4d583abad45eb987b5a99b3281b6d435b7e <3c0283a59e36e3707c4a81f4952e362d31f876b8 || >=8139a4d583abad45eb987b5a99b3281b6d435b7e <2cbf81f76842e46bdf25823c70e1db4044a65678 || >=8139a4d583abad45eb987b5a99b3281b6d435b7e <38a327221f7f765e7d853b7bafe47e342441ec85 || >=8139a4d583abad45eb987b5a99b3281b6d435b7e <b5d141ea15f173f15b9f0a72965902f3428c0d92 || >=8139a4d583abad45eb987b5a99b3281b6d435b7e <5fb2940327722b4684d2f964b54c1c90aa277324 || >=8139a4d583abad45eb987b5a99b3281b6d435b7e <871b8ea8ef39a6c253594649f4339378fad3d0dd || >=8139a4d583abad45eb987b5a99b3281b6d435b7e <6b9e66437cc6123ddedac141e1b8b6fcf57d2972 || >=8139a4d583abad45eb987b5a99b3281b6d435b7e <dd2b888e08d3b3d6aacd65d76cd44fac11da750f || >=8139a4d583abad45eb987b5a99b3281b6d435b7e <a66485a934c7187ae8e36517d40615fa2e961cff | 3c0283a59e36e3707c4a81f4952e362d31f876b8, 2cbf81f76842e46bdf25823c70e1db4044a65678, 38a327221f7f765e7d853b7bafe47e342441ec85, b5d141ea15f173f15b9f0a72965902f3428c0d92, 5fb2940327722b4684d2f964b54c1c90aa277324, 871b8ea8ef39a6c253594649f4339378fad3d0dd, 6b9e66437cc6123ddedac141e1b8b6fcf57d2972, dd2b888e08d3b3d6aacd65d76cd44fac11da750f, a66485a934c7187ae8e36517d40615fa2e961cff |
| Linux/Linuxgeneric | 3.16 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
Apr 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.