CVE-2025-38322perf/x86/intel: Fix crash in icl_update_topdown_event()
Updated under an hour ago ()
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | 781b2db0eb7731fbde510c268b7ccc62959c3feb builds before 702ea6028032d6c1fe96c2d4762a3575e3654819; from e7f6922c8a5b41522a8329ea6bbf815993b2dd28 before 79e2dd573116d3338507c311460da9669095c94d; from 3a8bec6583e5239de3bd597ab382dc6c2b0c29a1 before e97c45c770f5e56c784a46c2a96ab968d26b97d9; from f9bdf1f953392c9edd69a7f884f78c0390127029 before a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f; from f9bdf1f953392c9edd69a7f884f78c0390127029 before b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed; 06cd7bfbb86e9db3e9013ea6636ad2c6f0a1664d; d8370aa704bd7e384918c8f466856374725c0585; from 6.1.134 before 6.1.149; and 4 more ranges | CNA record |
Siemens SIMATIC CN 4100 siemens:simatic_cn_4100 (from the name) | before V5.0 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 6.1.134 before 6.1.149; from 6.6.87 before 6.6.101; from 6.12.23 before 6.12.49; from 6.13.11 before 6.14; from 6.14.2 before 6.15.4; 6.16; 6.16 | NVD |
debian debian_linux debian:debian_linux | 11.0 | NVD |
References
- https://git.kernel.org/stable/c/702ea6028032d6c1fe96c2d4762a3575e3654819patch
- https://git.kernel.org/stable/c/79e2dd573116d3338507c311460da9669095c94dpatch
- https://git.kernel.org/stable/c/e97c45c770f5e56c784a46c2a96ab968d26b97d9patch
- https://git.kernel.org/stable/c/a85cc69acdcb05f8cd226b8ea0778b8e2e887e6fpatch
- https://git.kernel.org/stable/c/b0823d5fbacb1c551d793cbfe7af24e0d1fa45edpatch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlthird-party-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.