bpf: Disable preemption in bpf_get_stackid
Priority LOW 33Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 6 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.00175 7th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.191, 6.6.160, 6.12.111 +3Red Hat: 6 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.111, 6.18.51, 7.2.5, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-89799
- 2026-10-03 Alias added: GHSA-p7rj-gh7c-64vc
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@e79a70c2e97ae36bbdd371f0ce88a525f7b49f01 · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-30 Fix available: Linux/Linux@01fc93f670b3e759413a4d574c18ccfc636d2728, Linux/[email protected] · CNA
- 2026-10-30 1 new reference · CNA
- 2026-11-01 Affected versions changed · Red Hat
- 2026-11-01 CVSS score added · Red Hat
References
Other 6
- https://git.kernel.org/stable/c/01fc93f670b3e759413a4d574c18ccfc636d2728
- https://git.kernel.org/stable/c/e79a70c2e97ae36bbdd371f0ce88a525f7b49f01
- https://git.kernel.org/stable/c/18c71e4b65ee60b8611fc071bdd7159f10185117
- https://git.kernel.org/stable/c/ccf481d73bce6e851cec364fe831c86fe66877cf
- https://git.kernel.org/stable/c/c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf
- https://git.kernel.org/stable/c/15f1bd8574662f1b7b26aaa2e23ebf4066f0117d
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Sources
- CVE-2026-89799 · CVE Program
- CVE-2026-89799 · NVD
- FIRST EPSS
- GHSA-p7rj-gh7c-64vc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-89799 · Red Hat security data · CC BY 4.0
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