wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work()
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work() When the mt7996 pci chip is detaching, the mt7996_crash_data is released in mt7996_coredump_unregister(). However, the work item dump_work may still be running or pending, leading to UAF bugs when the already freed crash_data is dereferenced again in mt7996_mac_dump_work(). The race condition can occur as follows: CPU 0 (removal path) | CPU 1 (workqueue) mt7996_pci_remove() | mt7996_sys_recovery_set() mt7996_unregister_device() | mt7996_reset() mt7996_coredump_unregister() | queue_work() vfree(dev->coredump.crash_data) | mt7996_mac_dump_work() | crash_data-> // UAF Fix this by ensuring dump_work is properly canceled before the crash_data is deallocated. Add cancel_work_sync() in mt7996_unregister_device() to synchronize with any pending or executing dump work.
CVE-2026-53097
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-2026-53097
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": "878161d5d4a469a6ef7f3fb4fe9f676bc508ee99",
"lessThan": "533b1a9fa0128c75e40dd2d2c38a32b4e660741f",
"versionType": "git"
},
{
"status": "affected",
"version": "878161d5d4a469a6ef7f3fb4fe9f676bc508ee99",
"lessThan": "180182a3f23ff79430a32ca2c4c1885368ceab48",
"versionType": "git"
},
{
"status": "affected",
"version": "878161d5d4a469a6ef7f3fb4fe9f676bc508ee99",
"lessThan": "aa4a31cd89f4fde5043ac613fe0e27014a60a60b",
"versionType": "git"
},
{
"status": "affected",
"version": "878161d5d4a469a6ef7f3fb4fe9f676bc508ee99",
"lessThan": "188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d",
"versionType": "git"
},
{
"status": "affected",
"version": "878161d5d4a469a6ef7f3fb4fe9f676bc508ee99",
"lessThan": "c8f62f73bbced3a79894655bdb0b625462d956fc",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7996/init.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.91",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.33",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.10",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7996/init.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53097
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46361 · Revision 1
- Added to Heist Feed
- Publisher date