irqchip/gic-v5: Clear per-CPU IRS data on teardown
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v5: Clear per-CPU IRS data on teardown IRS affinity setup publishes an IRS pointer and IAFFID state in the per-CPU data before the remaining IRS initialization can fail. The error path then frees the IRS data without clearing that published state, leaving CPUs associated with freed memory. On initialization failure and normal IRS teardown, clear the per-CPU IRS association by removing the stale pointer to irs_data. Also invalidate the per-CPU IAFFID state for any CPUs that were tied to the IRS before it was freed.
CVE-2026-90121
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-2026-90121
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": "5cb1b6dab2def316671ea2565291a86ad58b884c",
"lessThan": "0887d41abf76638942688cb0c0ff8087f52e2b33",
"versionType": "git"
},
{
"status": "affected",
"version": "5cb1b6dab2def316671ea2565291a86ad58b884c",
"lessThan": "54937af6f4a0d44c2852a203d457902f3264c906",
"versionType": "git"
},
{
"status": "affected",
"version": "5cb1b6dab2def316671ea2565291a86ad58b884c",
"lessThan": "3dfc0ab5fefd052c6028c4632b1fad8bdaf7967e",
"versionType": "git"
}
],
"programFiles": [
"drivers/irqchip/irq-gic-v5-irs.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/irqchip/irq-gic-v5-irs.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90121
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36523 · Revision 1
- Added to Heist Feed
- Publisher date