CVE-2026-97503

Summary

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.

Affected Software

Weaknesses

References

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

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