CVE-2026-97503genirq/proc: Size interrupt directory names for 10-digit interrupt numbers
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: genirq/proc: Size interrupt directory names for 10-digit interrupt numbers /proc/irq/<n>/ 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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 721255b9826bd11c7a38b585905fc2dd0fb94e52 before d4b22fbae70037299e96539c330e4a1054b28a91; from 721255b9826bd11c7a38b585905fc2dd0fb94e52 before c2c7983c93f5d86962318be7e7298f1bc3feb1a6 | CNA record |
References
- https://git.kernel.org/stable/c/d4b22fbae70037299e96539c330e4a1054b28a91
- https://git.kernel.org/stable/c/c2c7983c93f5d86962318be7e7298f1bc3feb1a6
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.