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Several security issues were fixed in U-Boot. Software Description: - u-boot: A boot loader for embedded systems Details: USN-8930-1 fixed some vulnerabilities in U-Boot. This update provides the corresponding fix for U-Boot on Ubuntu 26.10. Original advisory details: Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain NFS READ and NFS READLINK responses. An attacker could possibly use this issue to trigger a buffer overflow, resulting in a denial of service or arbitrary code execution. (CVE-2026-74220, CVE-2026-74221) Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain HTTP data storage failures in its lwIP implementation. An attacker could possibly use this issue to trigger a use-after-free, resulting in a denial of service. (CVE-2026-74222) Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot did not properly validate certain DHCPv6 option lengths during network boot. An attacker co... Read the Full Advisory
Several security issues were fixed in U-Boot.
Software Description:
- u-boot: A boot loader for embedded systems
USN-8930-1 fixed some vulnerabilities in U-Boot. This update provides the
corresponding fix for U-Boot on Ubuntu 26.10.
Original advisory details:
Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot
incorrectly handled certain NFS READ and NFS READLINK responses. An
attacker could possibly use this issue to trigger a buffer overflow,
resulting in a denial of service or arbitrary code execution.
(CVE-2026-74220, CVE-2026-74221)
Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot
incorrectly handled certain HTTP data storage failures in its lwIP
implementation. An attacker could possibly use this issue to trigger a
use-after-free, resulting in a denial of service. (CVE-2026-74222)
Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot did not
properly validate certain DHCPv6 option lengths during network boot. An
The problem can be corrected by updating your system to the following package versions: Ubuntu 26.10 u-boot-imx 2025.10-0ubuntu6 u-boot-qemu 2025.10-0ubuntu6 u-boot-tools 2025.10-0ubuntu6 In general, a standard system update will make all the necessary changes.
CVE-2026-74220, CVE-2026-74221, CVE-2026-74222, CVE-2026-74225
Ubuntu Security Notice USN-8930-2
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