CVE-2024-50010

What it actually does

Race condition in exec path permission checks allows concurrent modification of noexec flags to trigger spurious WARN_ON assertions after checks were moved earlier in the flow, without validating prior permission checks occurred.

Why it matters to the business

May produce kernel warnings or minor availability impact on Linux systems under concurrent filesystem flag changes; low exploit likelihood reduces urgency despite broad kernel exposure.

How an attack unfolds

An attacker with local access races filesystem operations to toggle noexec while execve permission checks run, potentially triggering the WARN path; listed threat actors have targeted similar kernel races but no public exploitation of this specific condition is known.

How to fix it

Update to fixed kernel commit c9b77438077d5a20c79ead95bcdaf9bd4797baaf or later; for exiv2 on Rocky Linux 8 upgrade to 0:0.27.4-5.el8. Reboot after kernel updates.

How to confirm the fix worked

Confirm kernel version includes commit c9b77438077d5a20c79ead95bcdaf9bd4797baaf; monitor for absence of related WARN_ON messages in dmesg under concurrent exec and mount operations.

Typical attack path

1. Obtain local user access on affected Linux kernel
2. Race concurrent mount or file flag changes against execve calls
3. Trigger the racy path_noexec WARN_ON condition
4. Observe or leverage resulting kernel warning or stability effects

How to detect it

Search kernel logs and dmesg for path_noexec or exec-related WARN messages; correlate with processes performing concurrent mount and exec operations; no specific threat actor IOCs tied to this resolved condition.

What your security team should do

• Prioritize kernel updates on all Linux systems within standard patch cycles given low EPSS
• Review local processes performing frequent execve under dynamic mounts
• Enable kernel warning logging to detect any residual instances