High severity7.8NVD Advisory· Published Sep 16, 2026· Updated Oct 30, 2026
CVE-2026-89799
CVE-2026-89799
Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: Disable preemption in bpf_get_stackid
The get_perf_callchain call needs disabled preemption plus we need it disabled as long as we access its returned trace entries buffer.
Note the bpf_get_stackid_pe function is executed already with preemption disabled.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- osv-coords2 versions
>= 4.6.0, < 6.1.191+ 1 more
- (no CPE)range: >= 4.6.0, < 6.1.191
- (no CPE)range: < 7.2.7-1.1
Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/01fc93f670b3e759413a4d574c18ccfc636d2728nvd
- git.kernel.org/stable/c/15f1bd8574662f1b7b26aaa2e23ebf4066f0117dnvd
- git.kernel.org/stable/c/18c71e4b65ee60b8611fc071bdd7159f10185117nvd
- git.kernel.org/stable/c/c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdfnvd
- git.kernel.org/stable/c/ccf481d73bce6e851cec364fe831c86fe66877cfnvd
- git.kernel.org/stable/c/e79a70c2e97ae36bbdd371f0ce88a525f7b49f01nvd
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