bpf: Reject resilient lock operations in rbtree callbacks (CVE-2026-98060) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-98060

bpf: Reject resilient lock operations in rbtree callbacks

Answer in brief

CVE-2026-98060 records a Unknown severity vulnerability in bpf: Reject resilient lock operations in rbtree callbacks. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=0de2046137f976e7302d43ac01d9894d07ac1fff <cc2e065ed206aecd9b94564779244f3ffb26e356 \|\| >=0de2046137f976e7302d43ac01d9894d07ac1fff <71930202a0a0c49f0a3b45b41907a074cb780266 \|\| >=0de2046137f976e7302d43ac01d9894d07ac1fff <7b7b8b5960102566bd625ae829d1f330c5b5d104	cc2e065ed206aecd9b94564779244f3ffb26e356, 71930202a0a0c49f0a3b45b41907a074cb780266, 7b7b8b5960102566bd625ae829d1f330c5b5d104
Linux/Linuxgeneric	6.15	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to cc2e065ed206aecd9b94564779244f3ffb26e356 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject resilient lock operations in rbtree callbacks __bpf_rbtree_add() keeps parent and link pointers live across calls to the program-supplied comparison callback. The verifier therefore requires the root's lock to remain held throughout the callback. The helper path enforces this rule for bpf_spin_lock() and bpf_spin_unlock(), but the resilient lock kfunc argument path does not. Since resilient locks may protect BPF rbtree roots, a callback can release the root lock and let another CPU remove and free the node referenced by the in-progress tree walk. The walk then resumes using freed pointers. Reject resilient lock kfuncs in an rbtree comparison callback, matching the existing policy for the spin lock helpers. Resilient-lock-protected trees remain valid when their comparison callbacks leave lock state alone.

Quoted source text, attributed separately from HOL analysis.