CVE-2026-89799

bpf: Disable preemption in bpf_get_stackid

State: Published
Severity: 7.8 High
Published: Sep 16, 2026
Updated: Oct 30, 2026
Reserved: Sep 11, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	d5a3b1f691865be576c2bffa708549b8cdccda19 to before 01fc93f670b3e759413a4d574c18ccfc636d2728Affected d5a3b1f691865be576c2bffa708549b8cdccda19 to before e79a70c2e97ae36bbdd371f0ce88a525f7b49f01Affected d5a3b1f691865be576c2bffa708549b8cdccda19 to before 18c71e4b65ee60b8611fc071bdd7159f10185117Affected d5a3b1f691865be576c2bffa708549b8cdccda19 to before ccf481d73bce6e851cec364fe831c86fe66877cfAffected d5a3b1f691865be576c2bffa708549b8cdccda19 to before c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdfAffected d5a3b1f691865be576c2bffa708549b8cdccda19 to before 15f1bd8574662f1b7b26aaa2e23ebf4066f0117dAffected
LinuxLinux	4.6Affected before 4.6Not affected 6.1.191 through 6.1.Not affected 6.6.160 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.51 through 6.18.Not affected 7.2.5 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

d5a3b1f691865be576c2bffa708549b8cdccda19 to before 01fc93f670b3e759413a4d574c18ccfc636d2728Affected
d5a3b1f691865be576c2bffa708549b8cdccda19 to before e79a70c2e97ae36bbdd371f0ce88a525f7b49f01Affected
d5a3b1f691865be576c2bffa708549b8cdccda19 to before 18c71e4b65ee60b8611fc071bdd7159f10185117Affected
d5a3b1f691865be576c2bffa708549b8cdccda19 to before ccf481d73bce6e851cec364fe831c86fe66877cfAffected
d5a3b1f691865be576c2bffa708549b8cdccda19 to before c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdfAffected
d5a3b1f691865be576c2bffa708549b8cdccda19 to before 15f1bd8574662f1b7b26aaa2e23ebf4066f0117dAffected

LinuxLinux

4.6Affected
before 4.6Not affected
6.1.191 through 6.1.*Not affected
6.6.160 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.51 through 6.18.*Not affected
7.2.5 through 7.2.*Not affected
7.3 and laterNot affected

References

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