CVE-2026-97503

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.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-25)

Published

2026-09-24

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

References

• https://git.kernel.org/stable/c/488bcd7fd3e9a2ad647b71b505a269fdb28753c4
• https://git.kernel.org/stable/c/a8adf64fe7fd5d7c476769a043ee56eda7b775ce
• https://git.kernel.org/stable/c/c2c7983c93f5d86962318be7e7298f1bc3feb1a6
• https://git.kernel.org/stable/c/d4b22fbae70037299e96539c330e4a1054b28a91

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