Bug 2540488 (CVE-2026-97503) - CVE-2026-97503 kernel: genirq/proc: Size interrupt directory names for 10-digit interrupt numbers
Summary: CVE-2026-97503 kernel: genirq/proc: Size interrupt directory names for 10-dig...
Keywords:
Status: NEW
Alias: CVE-2026-97503
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 17:00 UTC by OSIDB Bzimport
Modified: 2026-09-29 13:17 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description OSIDB Bzimport 2026-09-24 17:00:03 UTC
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.


Note You need to log in before you can comment on or make changes to this bug.