CVE-2026-85234 | BDVDB-2026-374186 Detail
Red HatRed Hat Enterprise Linux 10
Description#
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
- CWE-125 Out-of-bounds Read
References#
- https://access.redhat.com/errata/RHSA-2026:78952
- https://access.redhat.com/errata/RHSA-2026:80663
- https://access.redhat.com/errata/RHSA-2026:82280
- https://access.redhat.com/security/cve/CVE-2026-85234
- https://bugzilla.redhat.com/show_bug.cgi?id=2460997
- https://git.kernel.org/pub/scm/network/tftp/tftp-hpa.git/commit/?id=4b493532f5ce052a1c124acd0661233ec7918327
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.