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VulnerabilityPublished Updated

CVE-2025-68798: Linux kernel · perf/x86/amd: Check event before enable to avoid GPF

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e1028fb38b328084bc683a4efb001c95d3108573 : update Linux kernel when convenient.

Data as of 10 Nov 2026, 13:18 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
Patch
Available – fixed in e1028fb38b328084bc683a4efb001c95d3108573, 49324a0c40f7e9bae1bd0362d23fc42232e14621, 866cf36bfee4fba6a492d2dcc5133f857e3446b0 +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ ada543459cab7f653dcacdaba4011a8bb19c627c, < e1028fb38b328084bc683a4efb001c95d3108573
Fixed in
  • e1028fb38b328084bc683a4efb001c95d3108573
LinuxLinuxAffected
  • ≥ ada543459cab7f653dcacdaba4011a8bb19c627c, < 49324a0c40f7e9bae1bd0362d23fc42232e14621
Fixed in
  • 49324a0c40f7e9bae1bd0362d23fc42232e14621
LinuxLinuxAffected
  • ≥ ada543459cab7f653dcacdaba4011a8bb19c627c, < 866cf36bfee4fba6a492d2dcc5133f857e3446b0
Fixed in
  • 866cf36bfee4fba6a492d2dcc5133f857e3446b0
LinuxLinuxAffected
  • ≥ ada543459cab7f653dcacdaba4011a8bb19c627c, < 43c2e5c2acaae50e99d1c20a5a46e367c442fb3b
Fixed in
  • 43c2e5c2acaae50e99d1c20a5a46e367c442fb3b
LinuxLinuxAffected
  • ≥ ada543459cab7f653dcacdaba4011a8bb19c627c, < 6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f
Fixed in
  • 6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f
LinuxLinuxAffected
  • =5.19
Fixed in–

AI-suggested

This vulnerability has been fixed in the Linux kernel. Users should update to a Linux kernel version that includes the fix commits referenced (e.g., post-5.19 with the specified fixes). No additional mitigation is required beyond applying the official patch.

Description

A vulnerability in the Linux kernel's AMD performance monitoring unit (PMU) code can cause a general protection fault (GPF) due to a null pointer dereference in amd_pmu_enable_all(). This issue arises from a race condition where cpuc->events[idx] can become NULL during certain NMI throttle operations. The flaw affects AMD machines and has been fixed by adding a check for NULL events before enabling them.

References

Community reviews

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