OESA-2026-4736

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4736

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-4736.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-4736

Upstream

CVE (2)

Published

2026-11-04T13:55:04Z

Modified

2026-11-04T14:00:07Z

Severity

8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator

Summary

uboot-tools security update

Details

This package includes the mkimage program, which allows generation of U-Boot images in various formats, and the fw_printenv and fw_setenv programs to read and modify U-Boot's environment.

Security Fix(es):

U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_read_reply() function in net/nfs-common.c that allows attackers to corrupt memory by supplying crafted NFS READ reply lengths. A malicious NFS server can exploit signed integer handling to bypass length validation and write far past the destination buffer, crashing the bootloader or corrupting memory.(CVE-2026-74220)

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.(CVE-2026-74221)

Database specific

{
    "severity": "High"
}

References

Affected packages

openEuler:24.03-LTS-SP3 / uboot-tools

Package

Name: uboot-tools
Purl: pkg:rpm/openEuler/uboot-tools&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

2024.01-6.oe2403sp3

Ecosystem specific

{
    "aarch64": [
        "uboot-images-elf-2024.01-6.oe2403sp3.aarch64.rpm",
        "uboot-tools-2024.01-6.oe2403sp3.aarch64.rpm",
        "uboot-tools-debuginfo-2024.01-6.oe2403sp3.aarch64.rpm",
        "uboot-tools-debugsource-2024.01-6.oe2403sp3.aarch64.rpm"
    ],
    "noarch": [
        "uboot-images-armv8-2024.01-6.oe2403sp3.noarch.rpm",
        "uboot-tools-help-2024.01-6.oe2403sp3.noarch.rpm"
    ],
    "src": [
        "uboot-tools-2024.01-6.oe2403sp3.src.rpm"
    ],
    "x86_64": [
        "uboot-tools-2024.01-6.oe2403sp3.x86_64.rpm",
        "uboot-tools-debuginfo-2024.01-6.oe2403sp3.x86_64.rpm",
        "uboot-tools-debugsource-2024.01-6.oe2403sp3.x86_64.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-4736.json"