CVE-2026-64520firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies The register-based PARTITION_INFO_GET path trusted the firmware-provided indices when copying partition descriptors into the caller buffer. Reject inconsistent counts or index progressions so the copy loop cannot write past the allocated array. (fixed cur_idx when exactly one descriptor in the first fragment)
- CVSS
- 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from ba85c644ac8dc37d9b01a3332c2f142cb4d46954 before f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95; from ba85c644ac8dc37d9b01a3332c2f142cb4d46954 before 79d95c02ae0a95e6e80e8e92b7ca74ecee02854f; from ba85c644ac8dc37d9b01a3332c2f142cb4d46954 before 3974ea1938406f9bfa7c1f48d4e43533f447bb08 | CNA record |
References
- https://git.kernel.org/stable/c/f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95
- https://git.kernel.org/stable/c/79d95c02ae0a95e6e80e8e92b7ca74ecee02854f
- https://git.kernel.org/stable/c/3974ea1938406f9bfa7c1f48d4e43533f447bb08
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.