- —Not scoredno CVSS score yet
- 0.20%Exploitation in 30 daysEPSS · top 90% 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: arm64/boot: Disable trapping of PMZR_EL0 writes to EL2 __init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2. PMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in HDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host traps to EL2, where the nVHE hypervisor has no handler and BUG()s. The kernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU driver set PMUSERENR_EL0.UEN for a task with a user-read event, so a write from EL0 reaches the trap and takes the host down without a panic message. Accumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already does for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9 bits.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 1 day later
· 1 day 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)
- 0.20% · top 90% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 686d8f7b592f3466f44aea653c8147611b351c83 – < bb8c90c86441c090e9036f019cf1b4d7894a2c40
- affected 858c7bfcb35e1100b58bb63c9f562d86e09418d9 – < 071f51188a5d8ec10535541255587976d12fc7d8
- affected 858c7bfcb35e1100b58bb63c9f562d86e09418d9 – < ce71865bf43f88bed9d9218e9218e537150be506
- affected 858c7bfcb35e1100b58bb63c9f562d86e09418d9 – < 2bc6b218717b9d08f466f88209251d54bc09b207
- affected 882f78400322c0aec4b641a7168adad9a66bc0c2
- affected 6.12.25 – < 6.12.112
- affected 6.14.4 – < 6.15
- affected 6.15
- unaffected < 6.15
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.55 – ≤ 6.18.*
- unaffected 7.2.9 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/bb8c90c86441c090e9036f019cf1b4d7894a2c40 (opens in a new tab)
- https://git.kernel.org/stable/c/071f51188a5d8ec10535541255587976d12fc7d8 (opens in a new tab)
- https://git.kernel.org/stable/c/ce71865bf43f88bed9d9218e9218e537150be506 (opens in a new tab)
- https://git.kernel.org/stable/c/2bc6b218717b9d08f466f88209251d54bc09b207 (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-2026-103591 (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-2026-98546)Record last updated .