vduse: hold vduse_lock across IDR lookup in open path
In the Linux kernel, the following vulnerability has been resolved: vduse: hold vduse_lock across IDR lookup in open path vduse_dev_open() looks up struct vduse_dev through the IDR and then acquires dev->lock only after vduse_lock has been dropped. This leaves a window where a concurrent VDUSE_DESTROY_DEV can remove the same object from the IDR and free it before the open path locks the device, leading to a use-after-free. Close this race by keeping vduse_lock held until dev->lock has been acquired in the open path, matching the lock ordering already used by the destroy path.
CVE-2026-74313
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-2026-74313
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": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
"lessThan": "35483c5306e09b3190ff937089d404a78012695c",
"versionType": "git"
},
{
"status": "affected",
"version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
"lessThan": "5c1560be8aa6849356455af67518d35c551cbd95",
"versionType": "git"
},
{
"status": "affected",
"version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
"lessThan": "93ed4692f2299a40346025979f40e4a9b7b33af7",
"versionType": "git"
},
{
"status": "affected",
"version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
"lessThan": "d94e2947203aead590fd63f667d316d4475d65af",
"versionType": "git"
},
{
"status": "affected",
"version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
"lessThan": "a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2",
"versionType": "git"
},
{
"status": "affected",
"version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
"lessThan": "79e12c891940b0c4c75881b7fd82a8cbb8ac97be",
"versionType": "git"
},
{
"status": "affected",
"version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
"lessThan": "e440e077748939839d9f76e24383b76b785f80ce",
"versionType": "git"
}
],
"programFiles": [
"drivers/vdpa/vdpa_user/vduse_dev.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/vdpa/vdpa_user/vduse_dev.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74313
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33093 · Revision 1
- Added to Heist Feed
- Publisher date