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 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d4b22fbae70037299e96539c330e4a1054b28a91 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c2c7983c93f5d86962318be7e7298f1bc3feb1a6 0 < 6.18.53
Linux / Linux
All versions affected