Strix
74.9K

CVE-2026-97503

UnknownEPSS 0.14%

Last modified

CVE-2026-97503 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.14%

3.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 721255b9826bd11c7a38b585905fc2dd0fb94e52, < a8adf64fe7fd5d7c476769a043ee56eda7b775ce; >= 721255b9826bd11c7a38b585905fc2dd0fb94e52, < 488bcd7fd3e9a2ad647b71b505a269fdb28753c4; >= 721255b9826bd11c7a38b585905fc2dd0fb94e52, < d4b22fbae70037299e96539c330e4a1054b28a91; >= 721255b9826bd11c7a38b585905fc2dd0fb94e52, < c2c7983c93f5d86962318be7e7298f1bc3feb1a6
LinuxLinux6.5

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-97503?
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.
How severe is CVE-2026-97503?
Severity scoring for CVE-2026-97503 is pending analysis. The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2026-97503?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-97503?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST