{"id":"CVE-2026-98045","published":"2026-09-25T11:17:33.330","lastModified":"2026-09-25T11:17:33.330","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark faultable stack helpers as sleepable\n\nThe faultable variants of bpf_get_stack() and bpf_get_task_stack() pass\nmay_fault=true into the common stack collection code. Resolving user-space\nbuild IDs may then call build_id_parse_file() and block on filesystem\nreads.\n\nNeither helper prototype sets might_sleep. Since prototype selection uses\nthe sleepability of the whole program, the verifier can still allow these\nhelpers from a non-sleepable region within that program, such as an\nexplicit RCU or preemption-disabled region. The task-stack helper can also\nbe called from a non-sleepable timer callback of a sleepable program.\n\nMark both faultable prototypes as sleepable. The existing helper context\ncheck then rejects these calls while continuing to allow them in genuinely\nsleepable contexts.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/19e8d5a98afd071d8c1c5adeccf92b3c42eddc70","tags":[]},{"url":"https://git.kernel.org/stable/c/3014e8a8bdad55075d89836ad9c10710a9a69837","tags":[]},{"url":"https://git.kernel.org/stable/c/44b8d370f2725bad215da3e67668e98ba96671bd","tags":[]},{"url":"https://git.kernel.org/stable/c/9d02927fdf4e930893c92e35fed01a2704496900","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}