CVE-2022-48713
perf/x86/intel/pt: Fix crash with stop filters in single-range mode
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/pt: Fix crash with stop filters in single-range mode Add a check for !buf->single before calling pt_buffer_region_size in a place where a missing check can cause a kernel crash. Fixes a bug introduced by commit 670638477aed ("perf/x86/intel/pt: Opportunistically use single range output mode"), which added a support for PT single-range output mode. Since that commit if a PT stop filter range is hit while tracing, the kernel will crash because of a null pointer dereference in pt_handle_status due to calling pt_buffer_region_size without a ToPA configured. The commit which introduced single-range mode guarded almost all uses of the ToPA buffer variables with checks of the buf->single variable, but missed the case where tracing was stopped by the PT hardware, which happens when execution hits a configured stop filter. Tested that hitting a stop filter while PT recording successfully records a trace with this patch but crashes without this patch.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 84% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 670638477aede0d7a355ced04b569214aa3feacd – < 456f041e035913fcedb275aff6f8a71dfebcd394
- affected 670638477aede0d7a355ced04b569214aa3feacd – < e83d941fd3445f660d2f43647c580a320cc384f6
- affected 670638477aede0d7a355ced04b569214aa3feacd – < feffb6ae2c80b9a8206450cdef90f5943baced99
- affected 670638477aede0d7a355ced04b569214aa3feacd – < 1d9093457b243061a9bba23543c38726e864a643
- affected 5.5
- unaffected < 5.5
- unaffected 5.10.99 – ≤ 5.10.*
- unaffected 5.15.22 – ≤ 5.15.*
- unaffected 5.16.8 – ≤ 5.16.*
- unaffected 5.17 – ≤ *
References (4)
- https://git.kernel.org/stable/c/456f041e035913fcedb275aff6f8a71dfebcd394 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/e83d941fd3445f660d2f43647c580a320cc384f6 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/feffb6ae2c80b9a8206450cdef90f5943baced99 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/1d9093457b243061a9bba23543c38726e864a643 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-48713)Record last updated .