CVE-2026-97503
genirq/proc: Size interrupt directory names for 10-digit interrupt numbers
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 24, 2026 |
| Last Updated | Oct 21, 2026 |
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Affected Versions
Linux / Linux
721255b9826bd11c7a38b585905fc2dd0fb94e52 < a8adf64fe7fd5d7c476769a043ee56eda7b775ce 721255b9826bd11c7a38b585905fc2dd0fb94e52 < 488bcd7fd3e9a2ad647b71b505a269fdb28753c4 721255b9826bd11c7a38b585905fc2dd0fb94e52 < d4b22fbae70037299e96539c330e4a1054b28a91 721255b9826bd11c7a38b585905fc2dd0fb94e52 < c2c7983c93f5d86962318be7e7298f1bc3feb1a6
Linux / Linux
6.5
References
git.kernel.org: https://git.kernel.org/stable/c/a8adf64fe7fd5d7c476769a043ee56eda7b775ce git.kernel.org: https://git.kernel.org/stable/c/488bcd7fd3e9a2ad647b71b505a269fdb28753c4 git.kernel.org: https://git.kernel.org/stable/c/d4b22fbae70037299e96539c330e4a1054b28a91 git.kernel.org: https://git.kernel.org/stable/c/c2c7983c93f5d86962318be7e7298f1bc3feb1a6