CVE-2026-89899

CVE CVE-2026-89899EUVD EUVD-2026-80499Published 2026-09-16T10:31:59.000ZLast changed 2026-09-16T14:39:48.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: media: cec: disable delayed work before freeing an interrupted transmit cec_transmit_msg_fh() drops adap->lock to wait for a blocking transmit in wait_for_completion_killable(). If that wait is interrupted by a signal, cancel_delayed_work_sync() can run before the CEC kthread arms the reply timeout via schedule_delayed_work(&data->work) in cec_transmit_done_ts(). The work is then armed after the cancel, and the data is freed with its delayed_work still pending: ODEBUG: free active (active state 0) object: ... hint: cec_wait_timeout Use disable_delayed_work_sync(): it cancels the work and disables it, so the later schedule_delayed_work() becomes a no-op and the work cannot be re-armed. The data is freed right after, so it need not be re-enabled.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 490d84f6d73c12f4204241cff8651eed60aae914 <9a951931d4b4084acd64fa55fc3672a9da45ddf9; 4.18.19 <4.19; 490d84f6d73c12f4204241cff8651eed60aae914 <a3adb63b121937b97f7fdc51e96564c7c799538b; 4.19.2 <4.20; 490d84f6d73c12f4204241cff8651eed60aae914 <0fbd5c2327020858c45b2d1c65775d64cdeca523; e448dfd6d3ec944411f6575bc24e4f8baa1e297f; patch: 0; patch: 7.3-rc1; 2781b86d7e45de09befa5ace296b66787146561f; 490d84f6d73c12f4204241cff8651eed60aae914 <9c6ceb0949227c1f0cf0e19393daec72d9889871; patch: 7.2.5; patch: 6.12.110; 4.20; patch: 6.18.51

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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