CVE-2026-89892media: em28xx: defer audio-only extension registration
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In the Linux kernel, the following vulnerability has been resolved: media: em28xx: defer audio-only extension registration The audio-only path registers extensions while probing the primary device. For a dual-TS board, this happens before dev_next is created. The duplicate device inherits is_audio_only and is then independently inserted into em28xx_devlist. The list is intended to contain only primary devices: extension operations reach the secondary device through dev_next. The independently linked secondary can be freed during disconnect while its list node remains reachable, resulting in a use-after-free. Defer audio-only extension registration to the module-request work item. It runs only after probing has completed construction of the optional secondary device, so only the primary is registered and extension callbacks reach the secondary through dev_next.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 4a089668ef22c295ed4997289cc48446c849249c builds before 0da1e627f4fc9d0e947fdae90913042120878923; from 4a089668ef22c295ed4997289cc48446c849249c before f8d7e77d9c621b42a191c67a9b37bec23dc1d555; 4a089668ef22c295ed4997289cc48446c849249c builds before 1abe9524dec0fd26e9ceb8d586034d6f68dd8273; from 4a089668ef22c295ed4997289cc48446c849249c before 4e11c45dfdc72ab656067b1df8fcebaf52fd4715; from 4a089668ef22c295ed4997289cc48446c849249c before d06067ee32620f272cfb80c7bc7c572ad4e74724; from 4a089668ef22c295ed4997289cc48446c849249c before f9322ac9f862961d7f377b87ec26c8565af7e073; from 4a089668ef22c295ed4997289cc48446c849249c before 4666197ca4f7d80cd3b0292054fe45d76be9ba04; from 4a089668ef22c295ed4997289cc48446c849249c before 95f76f51937fdfb0fc1e14cae606b1ef574a56f3 | CNA record |
References
- https://git.kernel.org/stable/c/0da1e627f4fc9d0e947fdae90913042120878923
- https://git.kernel.org/stable/c/f8d7e77d9c621b42a191c67a9b37bec23dc1d555
- https://git.kernel.org/stable/c/1abe9524dec0fd26e9ceb8d586034d6f68dd8273
- https://git.kernel.org/stable/c/4e11c45dfdc72ab656067b1df8fcebaf52fd4715
- https://git.kernel.org/stable/c/d06067ee32620f272cfb80c7bc7c572ad4e74724
- https://git.kernel.org/stable/c/f9322ac9f862961d7f377b87ec26c8565af7e073
- https://git.kernel.org/stable/c/4666197ca4f7d80cd3b0292054fe45d76be9ba04
- https://git.kernel.org/stable/c/95f76f51937fdfb0fc1e14cae606b1ef574a56f3
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.