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

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Summary

CVECVE-2025-38322
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-07-10 09:15:26 UTC
Updated2026-05-12 13:16:47 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 781b2db0eb7731fbde510c268b7ccc62959c3feb 702ea6028032d6c1fe96c2d4762a3575e3654819 git Not specified
CNA Linux Linux affected e7f6922c8a5b41522a8329ea6bbf815993b2dd28 79e2dd573116d3338507c311460da9669095c94d git Not specified
CNA Linux Linux affected 3a8bec6583e5239de3bd597ab382dc6c2b0c29a1 e97c45c770f5e56c784a46c2a96ab968d26b97d9 git Not specified
CNA Linux Linux affected f9bdf1f953392c9edd69a7f884f78c0390127029 a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f git Not specified
CNA Linux Linux affected f9bdf1f953392c9edd69a7f884f78c0390127029 b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed git Not specified
CNA Linux Linux affected 06cd7bfbb86e9db3e9013ea6636ad2c6f0a1664d git Not specified
CNA Linux Linux affected d8370aa704bd7e384918c8f466856374725c0585 git Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 6.1.149 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.101 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.49 6.12.* semver Not specified
CNA Linux Linux unaffected 6.15.4 6.15.* semver Not specified
CNA Linux Linux unaffected 6.16 * original_commit_for_fix Not specified
ADP Siemens SIMATIC CN 4100 affected V5.0 custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/10/msg00008.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
git.kernel.org/stable/c/79e2dd573116d3338507c311460da9669095c94d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-032379.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/e97c45c770f5e56c784a46c2a96ab968d26b97d9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/702ea6028032d6c1fe96c2d4762a3575e3654819 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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