CVE-2026-98045

CVE CVE-2026-98045EUVD EUVD-2026-86698Published 2026-09-25T10:23:56.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 6.18.53; patch: 6.12.111; d4dd9775ec242425576af93daadb80a34083a53c <44b8d370f2725bad215da3e67668e98ba96671bd; d4dd9775ec242425576af93daadb80a34083a53c <3014e8a8bdad55075d89836ad9c10710a9a69837; patch: 0; d4dd9775ec242425576af93daadb80a34083a53c <9d02927fdf4e930893c92e35fed01a2704496900; patch: 7.2.7; patch: 7.3-rc2; d4dd9775ec242425576af93daadb80a34083a53c <19e8d5a98afd071d8c1c5adeccf92b3c42eddc70; 6.12

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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