CVE-2026-71973: falha de média gravidade em u-boot
U-Boot before 2026.10-rc4 Integer Overflow in SquashFS Directory Table Allocation
Publicada em · Atualizada em
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.2epss 0.2%
probabilidade de exploração
0.2%top 93% das CVEs
exploração observada
nãonenhuma fonte reporta
U-Boot before 2026.10-rc4 contains an integer overflow vulnerability in sqfs_read_directory_table() function when allocating the directory table buffer. Attackers can supply a crafted SquashFS image with an attacker-controlled superblock metablks_count value that causes heap buffer under-allocation and out-of-bounds writes, corrupting heap memory and crashing the bootloader.
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Produtos afetados
u-boot · u-bootCVEs relacionadas — u-boot
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Referências
https://github.com/u-boot/u-boothttps://github.com/u-boot/u-boot/blob/v2026.07/fs/squashfs/sqfs.c#L814https://github.com/u-boot/u-boot/commit/561ae28cb56a082cfa90c1c421c4955bc215470bhttps://www.vulncheck.com/advisories/u-boot-before-2026.10-rc4-integer-overflow-in-squashfs-directory-table-allocation