CVE-2022-48713
See a problem?- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-48713
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48713.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-48713
- Related
- Published
- 2024-06-20T11:15:54Z
- Modified
- 2024-09-11T04:57:00.151732Z
- Summary
- [none]
- Details
-
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 ptbufferregion_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 pthandlestatus due to calling ptbufferregion_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.
- References
-
- https://git.kernel.org/stable/c/1d9093457b243061a9bba23543c38726e864a643
- https://git.kernel.org/stable/c/456f041e035913fcedb275aff6f8a71dfebcd394
- https://git.kernel.org/stable/c/e83d941fd3445f660d2f43647c580a320cc384f6
- https://git.kernel.org/stable/c/feffb6ae2c80b9a8206450cdef90f5943baced99
- https://security-tracker.debian.org/tracker/CVE-2022-48713
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.10.103-1
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source