Vulnerability Description
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.
References
- https://git.kernel.org/stable/c/c2c7983c93f5d86962318be7e7298f1bc3feb1a6
- https://git.kernel.org/stable/c/d4b22fbae70037299e96539c330e4a1054b28a91
FAQ
What is CVE-2026-97503?
CVE-2026-97503 is a documented vulnerability. 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[...
How severe is CVE-2026-97503?
CVSS scoring is not yet available for CVE-2026-97503. Check NVD for updates.
Is there a patch for CVE-2026-97503?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.