Vulnerability in Linux

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund24 Sep 2026WID-SEC-2026-3579

  Linux Kernel: Multiple vulnerabilities Translated from German

  CVE-2026-97615CVE-2026-97978CVE-2026-98127+590 more CVEs

[ References ]References

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