perf/x86/intel: Fix crash in icl_update_topdown_event()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.1.149, 6.6.101, 6.12.49, 6.14, 6.15, and 1 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 781b2db0eb7731fbde510c268b7ccc62959c3feb · fixed in 702ea6028032d6c1fe96c2d4762a3575e3654819; From e7f6922c8a5b41522a8329ea6bbf815993b2dd28 · fixed in 79e2dd573116d3338507c311460da9669095c94d; From 3a8bec6583e5239de3bd597ab382dc6c2b0c29a1 · fixed in e97c45c770f5e56c784a46c2a96ab968d26b97d9; From f9bdf1f953392c9edd69a7f884f78c0390127029 · fixed in a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f; From f9bdf1f953392c9edd69a7f884f78c0390127029 · fixed in b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed; From 6.1.134 · fixed in 6.1.149; From 6.6.87 · fixed in 6.6.101; From 6.12.23 · fixed in 6.12.49; From 6.13.11 · fixed in 6.14; From 6.14.2 · fixed in 6.15
- Linux Linux
6.15
- KernelLinux
fixed in 6.1.149; From 6.2.0 · fixed in 6.6.101; From 6.7.0 · fixed in 6.12.49; From 6.13.0 · fixed in 6.15.4