enic: fix tx_hang_reset use-after-free on device removal
In the Linux kernel, the following vulnerability has been resolved: enic: fix tx_hang_reset use-after-free on device removal enic_remove() cancels the reset and change_mtu_work items but does not cancel tx_hang_reset. A TX timeout that fires while the device is being removed can schedule enic_tx_hang_reset() so that it runs after free_netdev(), resulting in a use-after-free. cancel_work_sync() alone is not sufficient here: the still-live watchdog and notify paths can re-schedule these work items in the window between the cancel and unregister_netdev(). Use disable_work_sync(), which cancels the work and blocks any subsequent schedule_work() from requeuing it, and apply it to the reset and change_mtu_work items as well so the same requeue race is closed for all teardown work.
CVE-2026-74725
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-2026-74725
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": "937317c7c1097aa878a5000e3aab616eb5c590c0",
"lessThan": "8619865f34fb3b130b567855382a5c4aadd522b9",
"versionType": "git"
},
{
"status": "affected",
"version": "937317c7c1097aa878a5000e3aab616eb5c590c0",
"lessThan": "e506e704b74748ffd0e1c92a7453ca2a959f832b",
"versionType": "git"
},
{
"status": "affected",
"version": "937317c7c1097aa878a5000e3aab616eb5c590c0",
"lessThan": "4f3464fc6c1f26afc504fd525c574f2bc14c9d42",
"versionType": "git"
},
{
"status": "affected",
"version": "937317c7c1097aa878a5000e3aab616eb5c590c0",
"lessThan": "ec680ea4ba1bca92a767fb7e7869758bfdd886e3",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/cisco/enic/enic_main.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.104",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.45",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.9",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/cisco/enic/enic_main.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74725
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #34285 · Revision 1
- Added to Heist Feed
- Publisher date