CVE-2026-72237 Affecting kernel-source package, versions <6.4.0-150700.53.84.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-SLES157-KERNELSOURCE-21163520
- published17 Oct 2026
- disclosed16 Oct 2026
Introduced: 16 Oct 2026
NewCVE-2026-72237 (opens in a new tab)How to fix?
Upgrade SLES:15.7 kernel-source to version 6.4.0-150700.53.84.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-source package and not the kernel-source package as distributed by SLES.
See How to fix? for SLES:15.7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
perf/x86/amd/brs: Fix kernel address leakage
A user-only branch stack can contain branches that originate from the kernel. As a result, kernel addresses are exposed to user space even when PERF_SAMPLE_BRANCH_USER is requested. On AMD processors supporting X86_FEATURE_BRS (Zen 3 only), perf can still report entries such as SYSRET/interrupt returns for which the branch-from addresses are in the kernel.
E.g.
$ perf record -j any,u -c 4000 -e branch-brs -o - --
perf bench syscall basic --loop 1000 |
perf script -i - -F brstack|tr ' ' '\n'|
grep -E '0x[89a-f][0-9a-f]{15}'
... 0xffffffff810001c4/0x72e2e32955eb/-/-/-/0//- 0xffffffff810001c4/0x72e2d94a9821/-/-/-/0//- 0xffffffff810001c4/0x72e2d94ffa1b/-/-/-/0//- ...
BRS provides no hardware branch filtering, so privilege level filtering is performed entirely in software. However, amd_brs_match_plm() only validates the branch-to address against the requested privilege levels. For branches from the kernel to user space, the branch-from address is left unchecked and is leaked. Extend the software filter to also validate the branch-from address, so that any branch record whose branch-from address is in the kernel is dropped when PERF_SAMPLE_BRANCH_USER is requested.
References
- https://www.suse.com/security/cve/CVE-2026-72237.html
- https://bugzilla.suse.com/1277615
- https://git.kernel.org/stable/c/046f6244da9b68e463a849b21446b9424e531491
- https://git.kernel.org/stable/c/2e706be56f418718bb3ae66c0aa94f9b61150e6d
- https://git.kernel.org/stable/c/47915e855fb38b42133e31ba917d99565f862154
- https://git.kernel.org/stable/c/90843d00dbc61220b66408ea0d8775cae9e51f70
- https://git.kernel.org/stable/c/ac44b4a3d6137489f8fa2e794b12e849c6b22eaa
- https://git.kernel.org/stable/c/4f949bc3913a6e3ce3b8574ac6ed1da8ec7a5ad1