CVE-2026-89899
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Received - Intake
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Vulnerability report for CVE-2026-89899, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-16
Last updated on: 2026-09-16
Assigner: kernel.org
Description
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 490d84f6d73c12f4204241cff8651eed60aae914 |
| Linux | Linux | 490d84f6d73c12f4204241cff8651eed60aae914 |
| Linux | Linux | 490d84f6d73c12f4204241cff8651eed60aae914 |
| Linux | Linux | 490d84f6d73c12f4204241cff8651eed60aae914 |
| Linux | Linux | e448dfd6d3ec944411f6575bc24e4f8baa1e297f |
| Linux | Linux | 2781b86d7e45de09befa5ace296b66787146561f |
| Linux | Linux | 4.18.19 |
| Linux | Linux | 4.19.2 |
| Linux | Linux | 4.20 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
