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CVE-2026-89799

bpf: Disable preemption in bpf_get_stackid

HIGH
7.8
CVSS Score
Published: September 16, 2026 at 10:30 AM UTC
Updated: October 21, 2026 at 01:20 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
4.6d5a3b1f691865be576c2bffa708549b8cdccda19
Vendor states this is fixed in 15f1bd8574662f1b7b26aaa2e23ebf4066f0117d (fixed)
Vendor states this is fixed in 18c71e4b65ee60b8611fc071bdd7159f10185117 (fixed)
Vendor states this is fixed in c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf (fixed)
Vendor states this is fixed in ccf481d73bce6e851cec364fe831c86fe66877cf (fixed)
Vendor states this is fixed in 4.6 (unaffected)
Vendor states this is fixed in 6.12.111 (unaffected)
Vendor states this is fixed in 6.18.51 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.2.5 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Source: cverecord
https://git.kernel.org/stable/c/ccf481d73bce6e851cec364fe831c86fe66877cf
Source: cverecord
https://git.kernel.org/stable/c/c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf
Source: cverecord
https://git.kernel.org/stable/c/15f1bd8574662f1b7b26aaa2e23ebf4066f0117d
Source: cverecord
https://git.kernel.org/stable/c/18c71e4b65ee60b8611fc071bdd7159f10185117
Source: cverecord
https://git.kernel.org/stable/c/e79a70c2e97ae36bbdd371f0ce88a525f7b49f01

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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