bpf: Mark bpf_btf_find_by_name_kind() as sleepable (CVE-2026-98046) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-98046

bpf: Mark bpf_btf_find_by_name_kind() as sleepable

Answer in brief

CVE-2026-98046 records a Unknown severity vulnerability in bpf: Mark bpf_btf_find_by_name_kind() as sleepable. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. 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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=3d78417b60fba249cc555468cb72d96f5cde2964 <29e40175617216fbd4544529f6bfb51d1ab95ba1 \|\| >=3d78417b60fba249cc555468cb72d96f5cde2964 <4d8784226bd3c6a707975081f986078f40456cec \|\| >=3d78417b60fba249cc555468cb72d96f5cde2964 <17f54a8f2b9714529d56edbbe12d448ccdbbf469 \|\| >=3d78417b60fba249cc555468cb72d96f5cde2964 <620614bf7672130c43b3cff375525a2202f61979	29e40175617216fbd4544529f6bfb51d1ab95ba1, 4d8784226bd3c6a707975081f986078f40456cec, 17f54a8f2b9714529d56edbbe12d448ccdbbf469, 620614bf7672130c43b3cff375525a2202f61979
Linux/Linuxgeneric	5.14	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 29e40175617216fbd4544529f6bfb51d1ab95ba1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark bpf_btf_find_by_name_kind() as sleepable When bpf_btf_find_by_name_kind() finds a type in module BTF, it returns a new BTF object fd through __btf_new_fd(). This reaches anon_inode_getfd(), which can sleep while allocating or expanding the current task fd table. The helper prototype does not set might_sleep, so the verifier allows the helper in non-sleepable contexts such as BPF timer callbacks. The fd allocation can then sleep in softirq context and install the fd into the interrupted task. Mark the helper as sleepable. This preserves calls from the main body of a sleepable syscall program while rejecting calls from its non-sleepable regions.

Quoted source text, attributed separately from HOL analysis.