{"id":"OESA-2026-4737","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.\r\n\r\nSecurity Fix(es):\n\nU-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)\n\nU-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)","modified":"2026-11-04T14:00:07.935999741Z","published":"2026-11-04T13:55:05Z","upstream":["CVE-2026-74220","CVE-2026-74221"],"database_specific":{"severity":"High"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4737"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74220"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74221"}],"affected":[{"package":{"name":"uboot-tools","ecosystem":"openEuler:22.03-LTS-SP4","purl":"pkg:rpm/openEuler/uboot-tools&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2021.10-14.oe2203sp4"}]}],"ecosystem_specific":{"src":["uboot-tools-2021.10-14.oe2203sp4.src.rpm"],"x86_64":["uboot-tools-2021.10-14.oe2203sp4.x86_64.rpm","uboot-tools-debuginfo-2021.10-14.oe2203sp4.x86_64.rpm","uboot-tools-debugsource-2021.10-14.oe2203sp4.x86_64.rpm"],"aarch64":["uboot-images-elf-2021.10-14.oe2203sp4.aarch64.rpm","uboot-tools-2021.10-14.oe2203sp4.aarch64.rpm","uboot-tools-debuginfo-2021.10-14.oe2203sp4.aarch64.rpm","uboot-tools-debugsource-2021.10-14.oe2203sp4.aarch64.rpm"],"noarch":["uboot-images-armv8-2021.10-14.oe2203sp4.noarch.rpm","uboot-tools-help-2021.10-14.oe2203sp4.noarch.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-4737.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}