perf/x86/intel: Fix crash in icl_update_topdown_event() (Linux Linux)

CVE-2025-38322
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.20 % · percentile 9 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel: Fix crash in icl_update_topdown_event() The perf_fuzzer found a hard-lockup crash on a RaptorLake machine: Oops: general protection fault, maybe for address 0xffff89aeceab400: 0000 CPU: 23 UID: 0 PID: 0 Comm: swapper/23 Tainted: [W]=WARN Hardware name: Dell Inc. Precision 9660/0VJ762 RIP: 0010:native_read_pmc+0x7/0x40 Code: cc e8 8d a9 01 00 48 89 03 5b cd cc cc cc cc 0f 1f ... RSP: 000:fffb03100273de8 EFLAGS: 00010046 .... Call Trace: <TASK> icl_update_topdown_event+0x165/0x190 ? ktime_get+0x38/0xd0 intel_pmu_read_event+0xf9/0x210 __perf_event_read+0xf9/0x210 CPUs 16-23 are E-core CPUs that don't support the perf metrics feature. The icl_update_topdown_event() should not be invoked on these CPUs. It's a regression of commit: f9bdf1f95339 ("perf/x86/intel: Avoid disable PMU if !cpuc->enabled in sample read") The bug introduced by that commit is that the is_topdown_event() function is mistakenly used to replace the is_topdown_count() call to check if the topdown functions for the perf metrics feature should be invoked. Fix it.

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 781b2db0eb7731fbde510c268b7ccc62959c3feb < 702ea6028032d6c1fe96c2d4762a3575e3654819 ; affected e7f6922c8a5b41522a8329ea6bbf815993b2dd28 < 79e2dd573116d3338507c311460da9669095c94d ; affected 3a8bec6583e5239de3bd597ab382dc6c2b0c29a1 < e97c45c770f5e56c784a46c2a96ab968d26b97d9 ; affected f9bdf1f953392c9edd69a7f884f78c0390127029 < a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f ; affected f9bdf1f953392c9edd69a7f884f78c0390127029 < b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed ; affected 06cd7bfbb86e9db3e9013ea6636ad2c6f0a1664d
Linux · Linuxaffected 6.15 ; unaffected 0 < 6.15 ; unaffected 6.1.149 ≤ 6.1.* ; unaffected 6.6.101 ≤ 6.6.* ; unaffected 6.12.49 ≤ 6.12.* ; unaffected 6.15.4 ≤ 6.15.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD