CVE-2026-74221

8.2 HIGHpublic exploit available

Published 2026-09-29 · Updated 2026-09-29

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_readlink_reply() function in net/nfs-common.c when processing NFS server responses. A malicious NFS server can send crafted READLINK replies with negative or oversized symlink length values to corrupt memory and crash the bootloader.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Weaknesses

CWE-195

Public exploit & PoC references

https://github.com/u-boot/u-boot
https://github.com/u-boot/u-boot/blob/v2026.07/net/nfs-common.c#L643
https://github.com/u-boot/u-boot/commit/1c0aff3a5fbfeee7a8948f624e0b8554e6e0d8fd

All references

https://github.com/u-boot/u-boot
https://github.com/u-boot/u-boot/blob/v2026.07/net/nfs-common.c#L643
https://github.com/u-boot/u-boot/commit/1c0aff3a5fbfeee7a8948f624e0b8554e6e0d8fd
https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc5-buffer-overflow-via-nfs-readlink

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

Related CVEs

MEDIUMCVE-2026-102639PoC
HIGHCVE-2026-74220PoC
UNSCOREDCVE-2026-77406PoC

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