CVE-2026-85234: falha de alta gravidade em Red Hat Enterprise Linux 10
Tftp: tftp-hpa: denial of service due to out-of-bounds read/write in remap engine
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21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.5epss 0.5%
A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()` function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and resulting in a denial of service.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Produtos afetados
Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Hardened ImagesCVEs relacionadas — Red Hat Enterprise Linux 10
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Referências
https://access.redhat.com/errata/RHSA-2026:78952https://access.redhat.com/errata/RHSA-2026:80663https://access.redhat.com/errata/RHSA-2026:82280https://access.redhat.com/security/cve/CVE-2026-85234https://bugzilla.redhat.com/show_bug.cgi?id=2460997https://git.kernel.org/pub/scm/network/tftp/tftp-hpa.git/commit/?id=4b493532f5ce052a1c124acd0661233ec7918327