CVE-2026-98045bpf: Mark faultable stack helpers as sleepable
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: bpf: Mark faultable stack helpers as sleepable The faultable variants of bpf_get_stack() and bpf_get_task_stack() pass may_fault=true into the common stack collection code. Resolving user-space build IDs may then call build_id_parse_file() and block on filesystem reads. Neither helper prototype sets might_sleep. Since prototype selection uses the sleepability of the whole program, the verifier can still allow these helpers from a non-sleepable region within that program, such as an explicit RCU or preemption-disabled region. The task-stack helper can also be called from a non-sleepable timer callback of a sleepable program. Mark both faultable prototypes as sleepable. The existing helper context check then rejects these calls while continuing to allow them in genuinely sleepable contexts.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from d4dd9775ec242425576af93daadb80a34083a53c before 44b8d370f2725bad215da3e67668e98ba96671bd; from d4dd9775ec242425576af93daadb80a34083a53c before 3014e8a8bdad55075d89836ad9c10710a9a69837; from d4dd9775ec242425576af93daadb80a34083a53c before 19e8d5a98afd071d8c1c5adeccf92b3c42eddc70; from d4dd9775ec242425576af93daadb80a34083a53c before 9d02927fdf4e930893c92e35fed01a2704496900 | CNA record |
References
- https://git.kernel.org/stable/c/44b8d370f2725bad215da3e67668e98ba96671bd
- https://git.kernel.org/stable/c/3014e8a8bdad55075d89836ad9c10710a9a69837
- https://git.kernel.org/stable/c/19e8d5a98afd071d8c1c5adeccf92b3c42eddc70
- https://git.kernel.org/stable/c/9d02927fdf4e930893c92e35fed01a2704496900
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.