genirq/proc: Size interrupt directory names for 10-digit interrupt numbers
In the Linux kernel, the following vulnerability has been resolved: genirq/proc: Size interrupt directory names for 10-digit interrupt numbers /proc/irq// directory names are built in `char name[10]` buffers with `sprintf(name, "%u", irq)`. Ten-digit IRQ numbers already need 11 bytes including the trailing NUL, and current sparse-IRQ configurations allow interrupt numbers in that range. Size the temporary name buffer for the current decimal form and switch to bounded formatting when creating or removing the proc entry.
CVE-2026-97503
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-2026-97503
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": "721255b9826bd11c7a38b585905fc2dd0fb94e52",
"lessThan": "a8adf64fe7fd5d7c476769a043ee56eda7b775ce",
"versionType": "git"
},
{
"status": "affected",
"version": "721255b9826bd11c7a38b585905fc2dd0fb94e52",
"lessThan": "488bcd7fd3e9a2ad647b71b505a269fdb28753c4",
"versionType": "git"
},
{
"status": "affected",
"version": "721255b9826bd11c7a38b585905fc2dd0fb94e52",
"lessThan": "d4b22fbae70037299e96539c330e4a1054b28a91",
"versionType": "git"
},
{
"status": "affected",
"version": "721255b9826bd11c7a38b585905fc2dd0fb94e52",
"lessThan": "c2c7983c93f5d86962318be7e7298f1bc3feb1a6",
"versionType": "git"
}
],
"programFiles": [
"kernel/irq/proc.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/irq/proc.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97503
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48769 · Revision 1
- Added to Heist Feed
- Publisher date