CVE-2026-56099 — OpenBSD mpls_do_error Kernel Stack Memory Disclosure via MPLS Input
OpenBSD before commit 6a23123 (2026-06-18) contains an out-of-bounds read vulnerability in the mpls_do_error function within sys/netmpls/mpls_input.c that allows remote attacker…
Published: 2026-06-18 · CVSS: 6.9 · CVSS 4.0
OpenBSD before commit 6a23123 (2026-06-18) contains an out-of-bounds read vulnerability in the mpls_do_error function within sys/netmpls/mpls_input.c that allows remote attackers to disclose kernel stack memory by sending crafted MPLS frames with 16 labels and no Bottom-of-Stack bit set.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7