CVE-2026-97503

genirq/proc: Size interrupt directory names for 10-digit interrupt numbers

N/A
Published: September 24, 2026 at 04:04 PM UTC
Updated: October 21, 2026 at 01:21 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.5721255b9826bd11c7a38b585905fc2dd0fb94e52
Vendor states this is fixed in c2c7983c93f5d86962318be7e7298f1bc3feb1a6 (fixed)
Vendor states this is fixed in d4b22fbae70037299e96539c330e4a1054b28a91 (fixed)
Vendor states this is fixed in 6.12.114 (unaffected)
Vendor states this is fixed in 6.18.53 (unaffected)
Vendor states this is fixed in 6.5 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

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