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CVE-2026-98790

UnknownEPSS 0.17%

Last modified

CVE-2026-98790 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: perf: Fix race between perf_event_exit_task() and perf_pending_task() A race condition exists between perf_event_exit_task() and perf_pending_task() during begin_new_exec(). During begin_new_exec(), perf_event_exit_task() may be called, and the PF_EXITING flag is not set on task. So perf_sigtrap() continues to execute and triggers WARN_ON_ONCE(event->ctx->task != current). Since both task exit and exec paths can call perf_event_exit_task() which sets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if event->ctx->task equals TASK_TOMBSTONE and dropping the redundant PF_EXITING check.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: perf: Fix race between perf_event_exit_task() and perf_pending_task() A race condition exists between perf_event_exit_task() and perf_pending_task() during begin_new_exec(). During begin_new_exec(), perf_event_exit_task() may be called, and the PF_EXITING flag is not set on task. So perf_sigtrap() continues to execute and triggers WARN_ON_ONCE(event->ctx->task != current). Since both task exit and exec paths can call perf_event_exit_task() which sets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if event->ctx->task equals TASK_TOMBSTONE and dropping the redundant PF_EXITING check.

Metrics

EPSS Probability
0.17%

6.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= 97ba62b278674293762c3d91f724f1bb922f04e0, < 6e454fbe3e646d119ab75e907035950e0e857c09; >= 97ba62b278674293762c3d91f724f1bb922f04e0, < a8a6fe5601fa2d2c0fbfb3e531a1063f73c1eae3; >= 97ba62b278674293762c3d91f724f1bb922f04e0, < 655acfa713bce9ae9c81a654459890c2f58cb4e8; >= 97ba62b278674293762c3d91f724f1bb922f04e0, < 672b8a9ce8f51b991481dfde26fba5cc4340a91a; >= 97ba62b278674293762c3d91f724f1bb922f04e0, < 524063fea29f8a841e49927ea7a8085194ad3ec2; >= 97ba62b278674293762c3d91f724f1bb922f04e0, < 81e61e3f8befa1bae3ec8e779d8ada5e5e362c21; >= 97ba62b278674293762c3d91f724f1bb922f04e0, < ffb684f2aa141eeb0caa6308422e7e05d1ded7c4
LinuxLinux5.13

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98790?
In the Linux kernel, the following vulnerability has been resolved: perf: Fix race between perf_event_exit_task() and perf_pending_task() A race condition exists between perf_event_exit_task() and perf_pending_task() during begin_new_exec(). During begin_new_exec(), perf_event_exit_task() may be called, and the PF_EXITING flag is not set on task. So perf_sigtrap() continues to execute and triggers WARN_ON_ONCE(event->ctx->task != current). Since both task exit and exec paths can call perf_event_exit_task() which sets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if event->ctx->task equals TASK_TOMBSTONE and dropping the redundant PF_EXITING check.
How severe is CVE-2026-98790?
Severity scoring for CVE-2026-98790 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98790?
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.

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Source: NVD / NIST