media: cec: disable delayed work before freeing an interrupted transmit
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.
CVE-2026-89899
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89899
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "490d84f6d73c12f4204241cff8651eed60aae914",
"lessThan": "9a951931d4b4084acd64fa55fc3672a9da45ddf9",
"versionType": "git"
},
{
"status": "affected",
"version": "490d84f6d73c12f4204241cff8651eed60aae914",
"lessThan": "a3adb63b121937b97f7fdc51e96564c7c799538b",
"versionType": "git"
},
{
"status": "affected",
"version": "490d84f6d73c12f4204241cff8651eed60aae914",
"lessThan": "9c6ceb0949227c1f0cf0e19393daec72d9889871",
"versionType": "git"
},
{
"status": "affected",
"version": "490d84f6d73c12f4204241cff8651eed60aae914",
"lessThan": "0fbd5c2327020858c45b2d1c65775d64cdeca523",
"versionType": "git"
},
{
"status": "affected",
"version": "e448dfd6d3ec944411f6575bc24e4f8baa1e297f",
"versionType": "git"
},
{
"status": "affected",
"version": "2781b86d7e45de09befa5ace296b66787146561f",
"versionType": "git"
},
{
"status": "affected",
"version": "4.18.19",
"lessThan": "4.19",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.2",
"lessThan": "4.20",
"versionType": "semver"
}
],
"programFiles": [
"drivers/media/cec/core/cec-adap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.20"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.20",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/media/cec/core/cec-adap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89899
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #36348 · Revision 1
- Added to Heist Feed
- Publisher date