net: qrtr: ns: Fix use-after-free in driver remove()
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Fix use-after-free in driver remove() In the remove callback, if a packet arrives after destroy_workqueue() is called, but before sock_release(), the qrtr_ns_data_ready() callback will try to queue the work, causing use-after-free issue. Fix this issue by saving the default 'sk_data_ready' callback during qrtr_ns_init() and use it to replace the qrtr_ns_data_ready() callback at the start of remove(). This ensures that even if a packet arrives after destroy_workqueue(), the work struct will not be dereferenced. Note that it is also required to ensure that the RX threads are completed before destroying the workqueue, because the threads could be using the qrtr_ns_data_ready() callback.
CVE-2026-46047
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-2026-46047
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": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "65168712c216584ff482a7d1a67589f2079b2634",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "dff081c3602f2fd810f69ef47945a226980dd05d",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "0f313eb6a8f6dffa491373cf3afab979fa1c02f4",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "db3c60ec772de30acae92d560dfcc5258e58dbe8",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "2e127ceb1c415e246076d8e09e23e443a7a2038f",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "f96779e916576e81430ebb326baff6e433fef8ae",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "7809fea20c9404bfcfa6112ec08d1fe1d3520beb",
"versionType": "git"
}
],
"programFiles": [
"net/qrtr/ns.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.258",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.209",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.86",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.27",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.4",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/qrtr/ns.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-46047
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #28381 · Revision 1
- Added to Heist Feed
- Publisher date