bpf: Mark bpf_btf_find_by_name_kind() as sleepable
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 5 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3
Vendor assessments
Red Hat
Red Hat rating: Low. 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 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: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-98046
- 2026-10-03 Alias added: GHSA-mcxj-647x-qcfv
- 2026-10-03 Fix available: Linux/[email protected], Linux/[email protected], Linux/Linux@7bf23cf7c9c0e0b5e638e497cdc0ec3f223742cc +1 · CNA
- 2026-10-03 2 new references · CNA
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-07 Affected versions changed · Red Hat
References
Other 6
- https://git.kernel.org/stable/c/7bf23cf7c9c0e0b5e638e497cdc0ec3f223742cc
- https://git.kernel.org/stable/c/b843ab43ac9d2fa1ddd0dab8d0dcc19dbf764e2f
- https://git.kernel.org/stable/c/29e40175617216fbd4544529f6bfb51d1ab95ba1
- https://git.kernel.org/stable/c/4d8784226bd3c6a707975081f986078f40456cec
- https://git.kernel.org/stable/c/17f54a8f2b9714529d56edbbe12d448ccdbbf469
- https://git.kernel.org/stable/c/620614bf7672130c43b3cff375525a2202f61979
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Sources
- CVE-2026-98046 · CVE Program
- CVE-2026-98046 · NVD
- FIRST EPSS
- GHSA-mcxj-647x-qcfv · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98046 · Red Hat security data · CC BY 4.0
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