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  4. CVE 2026 89799 bpf disable preemption in bpfgetstackid
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Back to active CVEs
High · CVSS 7.8CVE-2026-89799

bpf: Disable preemption in bpf_get_stackidCVE-2026-89799

Answer in brief

CVE-2026-89799 records a High severity (CVSS 7.8) vulnerability in bpf: Disable preemption in bpf_get_stackid. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Oct 30, 2026Source checked Oct 31, 2026First seen by HOL Sep 16, 2026Material review Oct 30, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
5 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=d5a3b1f691865be576c2bffa708549b8cdccda19 <ccf481d73bce6e851cec364fe831c86fe66877cf || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <15f1bd8574662f1b7b26aaa2e23ebf4066f0117dccf481d73bce6e851cec364fe831c86fe66877cf, c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf, 15f1bd8574662f1b7b26aaa2e23ebf4066f0117d
Linux/Linuxgeneric4.6Not reported
Linux/Linuxgeneric>=d5a3b1f691865be576c2bffa708549b8cdccda19 <18c71e4b65ee60b8611fc071bdd7159f10185117 || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <ccf481d73bce6e851cec364fe831c86fe66877cf || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <15f1bd8574662f1b7b26aaa2e23ebf4066f0117d18c71e4b65ee60b8611fc071bdd7159f10185117, ccf481d73bce6e851cec364fe831c86fe66877cf, c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf, 15f1bd8574662f1b7b26aaa2e23ebf4066f0117d
Linux/Linuxgeneric>=d5a3b1f691865be576c2bffa708549b8cdccda19 <e79a70c2e97ae36bbdd371f0ce88a525f7b49f01 || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <18c71e4b65ee60b8611fc071bdd7159f10185117 || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <ccf481d73bce6e851cec364fe831c86fe66877cf || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <15f1bd8574662f1b7b26aaa2e23ebf4066f0117de79a70c2e97ae36bbdd371f0ce88a525f7b49f01, 18c71e4b65ee60b8611fc071bdd7159f10185117, ccf481d73bce6e851cec364fe831c86fe66877cf, c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf, 15f1bd8574662f1b7b26aaa2e23ebf4066f0117d
Linux/Linuxgeneric>=d5a3b1f691865be576c2bffa708549b8cdccda19 <01fc93f670b3e759413a4d574c18ccfc636d2728 || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <e79a70c2e97ae36bbdd371f0ce88a525f7b49f01 || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <18c71e4b65ee60b8611fc071bdd7159f10185117 || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <ccf481d73bce6e851cec364fe831c86fe66877cf || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf || >=d5a3b1f691865be576c2bffa708549b8cdccda19 <15f1bd8574662f1b7b26aaa2e23ebf4066f0117d01fc93f670b3e759413a4d574c18ccfc636d2728, e79a70c2e97ae36bbdd371f0ce88a525f7b49f01, 18c71e4b65ee60b8611fc071bdd7159f10185117, ccf481d73bce6e851cec364fe831c86fe66877cf, c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf, 15f1bd8574662f1b7b26aaa2e23ebf4066f0117d

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to ccf481d73bce6e851cec364fe831c86fe66877cf; Linux/Linux to 18c71e4b65ee60b8611fc071bdd7159f10185117; Linux/Linux to e79a70c2e97ae36bbdd371f0ce88a525f7b49f01; Linux/Linux to 01fc93f670b3e759413a4d574c18ccfc636d2728 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 16, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 16, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 31, 2026
References
6 linked sources
Open source record