PT-2026-80505 · Julia · Libmount Jll+1

Publicado

2026-08-12

·

Atualizado

2026-08-12

CVSS v3.1

5.3

Média

VetorAV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be reallocated, this pointer becomes stale, leading to a heap use-after-free read. An attacker who can present a crafted block device image (for example, via USB insertion or a loop-mounted disk image) can trigger this flaw without user interaction, as libblkid is invoked automatically by udev/udisks as root on block-device hot-plug events. This could lead to limited information disclosure or denial of service.

Correção

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Identificadores relacionados

JLSEC-2026-1263

Produtos afetados

Libmount Jll
Util Linux Jll