CVE-2026-98059

CVE CVE-2026-98059EUVD EUVD-2026-86712Published 2026-09-25T10:24:04.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark sched_process_wait argument as nullable do_wait() passes wo->wo_pid to the sched_process_wait tracepoint. kernel_wait4() leaves wo_pid NULL for wait4(-1), and kernel_waitid_prepare() does likewise for waitid(P_ALL). btf_ctx_access() currently types argument 0 as PTR_TO_BTF_ID | PTR_TRUSTED. Without PTR_MAYBE_NULL, the verifier accepts an unchecked dereference. Trusted pointer loads have no fault protection, so a wait for any child can then cause a NULL pointer dereference in JITed BPF code. Add sched_process_wait to raw_tp_null_args[] with argument 0 marked nullable. The verifier rejects an unchecked dereference while preserving access after the program checks the pointer for NULL.

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: 6.12.111; patch: 7.3-rc2; b2fc4b17fc13810ef440fb323fad3981cd174985 <bee862c79cb7e0e5c33b2df2e3a31d164705120d; patch: 7.2.7; 838a10bd2ebfe11a60dd67687533a7cfc220cc86 <b9205e936dde9a94e93376c8de6195b740bcd5d2; patch: 0; 6.13; 838a10bd2ebfe11a60dd67687533a7cfc220cc86 <a453d6e3b8e8e1a321c8744d6189d763af9287d0; patch: 6.18.53; 838a10bd2ebfe11a60dd67687533a7cfc220cc86 <3c03a1b8ded858685a73c1ba4080adef99db4544; 6.12.6 <6.12.111

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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