CVE-2026-71974
mediumU-Boot before 2026.10-rc3 contains an out-of-bounds write vulnerability in read_slotted_partition() that fails to validate image size against partition bounds.
U-Boot before 2026.10-rc3 contains an out-of-bounds write vulnerability in read_slotted_partition() that fails to validate image size against partition bounds. Attackers with physical access can supply crafted boot media with oversized headers to write past the load buffer into bootloader memory on devices without Android Verified Boot protection.
CVSS
4.8
4.8 (CVSS v3.1)
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-09-29 22:18
Modified: 2026-09-30 20:17
NVD status: Awaiting Analysis
Last synced 2 days ago
Verified against the source API 2026-10-27 06:56 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/u-boot/u-boot disclosure@vulncheck.com
- https://github.com/u-boot/u-boot/blob/v2026.07/boot/bootmeth_android.c#L356 disclosure@vulncheck.com
- https://github.com/u-boot/u-boot/commit/35432ef6fe2c79ab72709966e64815a45eb55c76 disclosure@vulncheck.com
- https://patch.msgid.link/20260729-b4-android-bootmeth-oob-v1-1-31c3450ae0be@byteray.co.uk disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc3-out-of-bounds-write-via-and... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:56 UTC · record ↗