bpf: Mark sched_process_wait argument as nullable
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.
CVE-2026-98059
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98059
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "b2fc4b17fc13810ef440fb323fad3981cd174985",
"lessThan": "bee862c79cb7e0e5c33b2df2e3a31d164705120d",
"versionType": "git"
},
{
"status": "affected",
"version": "838a10bd2ebfe11a60dd67687533a7cfc220cc86",
"lessThan": "3c03a1b8ded858685a73c1ba4080adef99db4544",
"versionType": "git"
},
{
"status": "affected",
"version": "838a10bd2ebfe11a60dd67687533a7cfc220cc86",
"lessThan": "b9205e936dde9a94e93376c8de6195b740bcd5d2",
"versionType": "git"
},
{
"status": "affected",
"version": "838a10bd2ebfe11a60dd67687533a7cfc220cc86",
"lessThan": "a453d6e3b8e8e1a321c8744d6189d763af9287d0",
"versionType": "git"
},
{
"status": "affected",
"version": "6.12.6",
"lessThan": "6.12.111",
"versionType": "semver"
}
],
"programFiles": [
"kernel/bpf/btf.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/bpf/btf.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98059
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38171 · Revision 1
- Added to Heist Feed
- Publisher date