Answer in brief
CVE-2026-98477 records a Unknown severity vulnerability in perf/core: Fix NULL pmu_ctx passed to pmu->sched_task(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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.
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.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=bd27568117664b8b3e259721393df420ed51f57b <b5409311b606d536cc485f3706c242c2afa93edb || >=bd27568117664b8b3e259721393df420ed51f57b <249a2bd87a0e57dc28f36e992807edc9cae309b5 || >=bd27568117664b8b3e259721393df420ed51f57b <ec15f6a50183fc01f470af74ad49900fb3731fca || >=bd27568117664b8b3e259721393df420ed51f57b <36bb85cf36cab15fb611cb44b78a5df06e4e69a2 | b5409311b606d536cc485f3706c242c2afa93edb, 249a2bd87a0e57dc28f36e992807edc9cae309b5, ec15f6a50183fc01f470af74ad49900fb3731fca, 36bb85cf36cab15fb611cb44b78a5df06e4e69a2 |
| Linux/Linuxgeneric | 6.2 | Not reported |
| Linux/Linuxgeneric | >=bd27568117664b8b3e259721393df420ed51f57b <98181f9721f75f1a544dc563b0d8fed1d5c398d5 || >=bd27568117664b8b3e259721393df420ed51f57b <b5409311b606d536cc485f3706c242c2afa93edb || >=bd27568117664b8b3e259721393df420ed51f57b <249a2bd87a0e57dc28f36e992807edc9cae309b5 || >=bd27568117664b8b3e259721393df420ed51f57b <ec15f6a50183fc01f470af74ad49900fb3731fca || >=bd27568117664b8b3e259721393df420ed51f57b <36bb85cf36cab15fb611cb44b78a5df06e4e69a2 | 98181f9721f75f1a544dc563b0d8fed1d5c398d5, b5409311b606d536cc485f3706c242c2afa93edb, 249a2bd87a0e57dc28f36e992807edc9cae309b5, ec15f6a50183fc01f470af74ad49900fb3731fca, 36bb85cf36cab15fb611cb44b78a5df06e4e69a2 |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix NULL pmu_ctx passed to pmu->sched_task() perf_pmu_sched_task() returns early when cpuctx->task_ctx is set, and cpc->task_epc is only non-NULL while a task context is scheduled in on this CPU. __perf_pmu_sched_task() therefore always passes NULL: Unable to handle kernel NULL pointer dereference at virtual address 00 pc : armv8pmu_sched_task+0x14/0x50 Call trace: armv8pmu_sched_task+0x14/0x50 (P) perf_pmu_sched_task+0xac/0x108 __perf_event_task_sched_out+0x6c/0xe0 Pass &cpc->epc instead, the CPU-wide context for this PMU, which the function already dereferences a few lines up to find pmu. armv8pmu_sched_task() is the only in-tree implementation that dereferences the argument, and it only reads ->pmu, so the oops needs BRBE, added in v6.17.
Quoted source text, attributed separately from HOL analysis.