media: cx23885: cancel NetUP CI work before teardown
In the Linux kernel, the following vulnerability has been resolved: media: cx23885: cancel NetUP CI work before teardown netup_ci_exit() frees a netup_ci_state while its work item, netup_read_ci_status(), may still be pending or running on the system workqueue. The worker obtains the state with container_of() and dereferences it, so it must not outlive the state. netup_ci_init() queues the initial status read, and CI GPIO interrupts subsequently queue the same work from netup_ci_slot_status(). During remove, cx23885_finidev() calls free_irq() before the CI device is unregistered. free_irq() prevents further IRQ handlers from running, but does not drain work queued previously, so the worker can run after netup_ci_exit() frees the state. Call cancel_work_sync() before dvb_ca_en50221_release() and kfree(). This issue was found by an in-house static analysis tool.
CVE-2026-89893
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-2026-89893
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": "c184dcd282337c09695a4c1761d7ac77fdc8fb7d",
"lessThan": "aaf76794b870b0f391eff339252a2e2e22f33a4a",
"versionType": "git"
},
{
"status": "affected",
"version": "c184dcd282337c09695a4c1761d7ac77fdc8fb7d",
"lessThan": "f7ff5adb63c1b277565afa54ccc0924d841b4a52",
"versionType": "git"
},
{
"status": "affected",
"version": "c184dcd282337c09695a4c1761d7ac77fdc8fb7d",
"lessThan": "140ecbcbf978fbe60f83f8d4f8b1199029a5c763",
"versionType": "git"
},
{
"status": "affected",
"version": "c184dcd282337c09695a4c1761d7ac77fdc8fb7d",
"lessThan": "ec82b0cf7f75fd95802592dcc9560fc7f529bba4",
"versionType": "git"
},
{
"status": "affected",
"version": "c184dcd282337c09695a4c1761d7ac77fdc8fb7d",
"lessThan": "5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5",
"versionType": "git"
},
{
"status": "affected",
"version": "c184dcd282337c09695a4c1761d7ac77fdc8fb7d",
"lessThan": "bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146",
"versionType": "git"
},
{
"status": "affected",
"version": "c184dcd282337c09695a4c1761d7ac77fdc8fb7d",
"lessThan": "99cd62b9b1c818d6d01a87be9a8e5796314150a2",
"versionType": "git"
},
{
"status": "affected",
"version": "c184dcd282337c09695a4c1761d7ac77fdc8fb7d",
"lessThan": "4e143d662ca94888b494b2427fc9e34494eb933a",
"versionType": "git"
}
],
"programFiles": [
"drivers/media/pci/cx23885/cimax2.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.30"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.30",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"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/pci/cx23885/cimax2.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89893
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #36342 · Revision 1
- Added to Heist Feed
- Publisher date