CVE-2026-98059
- Source
- https://cve.org/CVERecord?id=CVE-2026-98059
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98059.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-98059
- Downstream
- Published
- 2026-09-25T10:24:04Z
- Modified
- 2026-09-26T03:48:42Z
- Summary
- bpf: Mark sched_process_wait argument as nullable
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98059.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/3c03a1b8ded858685a73c1ba4080adef99db4544
- https://git.kernel.org/stable/c/a453d6e3b8e8e1a321c8744d6189d763af9287d0
- https://git.kernel.org/stable/c/b9205e936dde9a94e93376c8de6195b740bcd5d2
- https://git.kernel.org/stable/c/bee862c79cb7e0e5c33b2df2e3a31d164705120d
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98059.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-98059
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedb2fc4b17fc13810ef440fb323fad3981cd174985Fixedbee862c79cb7e0e5c33b2df2e3a31d164705120d
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced838a10bd2ebfe11a60dd67687533a7cfc220cc86Fixed3c03a1b8ded858685a73c1ba4080adef99db4544Fixedb9205e936dde9a94e93376c8de6195b740bcd5d2Fixeda453d6e3b8e8e1a321c8744d6189d763af9287d0
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.12.6Fixed6.12.111