OpenBSD 7.6

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 008_ssh Errata topic: Security: ssh (All architectures) Issued: February 18, 2025 Upstream summary: sshd(8) denial of service relating to SSH2_MSG_PING handling. ssh(1) server impersonation when VerifyHostKeyDNS enabled. Table of contents Symptom […]

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 012_ike Errata topic: Security: ike (All architectures) Issued: April 9, 2025 Upstream summary: iked(8) and isakmpd(8) fix double-free in ecdh mode. Table of contents Symptom & Impact Environment & Reproduction Root […]

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 013_ssh Errata topic: Security: ssh (All architectures) Issued: April 9, 2025 Upstream summary: sshd(8) fix the DisableForwarding directive, which was failing to disable X11 forwarding and agent forwarding as documented. Table […]

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 016_nfs Errata topic: Security: nfs (All architectures) Issued: May 5, 2025 Upstream summary: Kernel of NFS server could crash if nfsd(8) is enabled and an evil NFS request is sent to […]

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 021_pledge Errata topic: Reliability: pledge (All architectures) Issued: July 1, 2025 Upstream summary: TIOCUCNTL ioctl(2) could crash the kernel if called with a non-file argument. Table of contents Symptom & Impact […]

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 023_libcrypto Errata topic: Security: libcrypto (All architectures) Issued: September 30, 2025 Upstream summary: Fix out-of-bounds read and write, memory leaks and incorrect error check for CMS enveloped data. Table of contents […]

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 003_ssh Errata topic: Reliability: ssh (hppa m88k mips64 powerpc powerpc64 sh sparc64) Issued: October 29, 2024 Upstream summary: mlkem768x25519-sha256 byte order bug on big-endian machines. Table of contents Symptom & Impact […]

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 004_aplsmc Errata topic: Reliability: aplsmc (arm64) Issued: October 31, 2024 Upstream summary: Updating Apple Silicon system firmware to the latest version cripples OpenBSD. This disabled the onboard WiFi. Table of contents […]

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 007_pffrag Errata topic: Reliability: pffrag (All architectures) Issued: February 10, 2025 Upstream summary: pf(4) could reassemble overlapping fragments into an incorrect IP packet that was too short. Table of contents Symptom […]

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read  •  Source: OpenBSD 7.6 errata 011_expat Errata topic: Reliability: expat (All architectures) Issued: April 1, 2025 Upstream summary: In libexpat fix regression of behavior introduced by previous errata. Table of contents Symptom & Impact Environment & […]