CVE-2026-98477perf/core: Fix NULL pmu_ctx passed to pmu->sched_task()
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 3 days later
· 3 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected bd27568117664b8b3e259721393df420ed51f57b – < 98181f9721f75f1a544dc563b0d8fed1d5c398d5
- affected bd27568117664b8b3e259721393df420ed51f57b – < b5409311b606d536cc485f3706c242c2afa93edb
- affected bd27568117664b8b3e259721393df420ed51f57b – < 249a2bd87a0e57dc28f36e992807edc9cae309b5
- affected bd27568117664b8b3e259721393df420ed51f57b – < ec15f6a50183fc01f470af74ad49900fb3731fca
- affected bd27568117664b8b3e259721393df420ed51f57b – < 36bb85cf36cab15fb611cb44b78a5df06e4e69a2
- affected 6.2
- unaffected < 6.2
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.55 – ≤ 6.18.*
- unaffected 7.2.9 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/98181f9721f75f1a544dc563b0d8fed1d5c398d5 (opens in a new tab)
- https://git.kernel.org/stable/c/b5409311b606d536cc485f3706c242c2afa93edb (opens in a new tab)
- https://git.kernel.org/stable/c/249a2bd87a0e57dc28f36e992807edc9cae309b5 (opens in a new tab)
- https://git.kernel.org/stable/c/ec15f6a50183fc01f470af74ad49900fb3731fca (opens in a new tab)
- https://git.kernel.org/stable/c/36bb85cf36cab15fb611cb44b78a5df06e4e69a2 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-103717 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98477)Record last updated .