CVE-2025-38322None▾ SunlitIn 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
0.2% → 0.2%
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.
Linux >= 781b2db0eb7731fbde510c268b7ccc62959c3feb < 702ea6028032d6c1fe96c2d4762a3575e3654819Linux >= e7f6922c8a5b41522a8329ea6bbf815993b2dd28 < 79e2dd573116d3338507c311460da9669095c94dLinux >= 3a8bec6583e5239de3bd597ab382dc6c2b0c29a1 < e97c45c770f5e56c784a46c2a96ab968d26b97d9Linux >= f9bdf1f953392c9edd69a7f884f78c0390127029 < a85cc69acdcb05f8cd226b8ea0778b8e2e887e6fLinux >= f9bdf1f953392c9edd69a7f884f78c0390127029 < b0823d5fbacb1c551d793cbfe7af24e0d1fa45edLinux 06cd7bfbb86e9db3e9013ea6636ad2c6f0a1664dLinux d8370aa704bd7e384918c8f466856374725c0585Linux >= 6.1.134 < 6.1.149Linux >= 6.6.87 < 6.6.101Linux >= 6.12.23 < 6.12.49Linux >= 6.13.11 < 6.14Linux >= 6.14.2 < 6.15Linux 6.15Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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