FreeBSD 15.1-RELEASE Errata

Abstract

This document lists errata items for FreeBSD 15.1-RELEASE, containing significant information discovered after the release or too late in the release cycle to be otherwise included in the release documentation. This information includes security advisories, as well as news relating to the software or documentation that could affect its operation or usability. An up-to-date version of this document should always be consulted before installing this version of FreeBSD.

This errata document for FreeBSD 15.1-RELEASE will be maintained until the release of FreeBSD 15.2-RELEASE.

Table of Contents

Introduction

This errata document contains "late-breaking news" about FreeBSD 15.1-RELEASE. Before installing this version, it is important to consult this document to learn about any post-release discoveries or problems that may already have been found and fixed.

Any version of this errata document actually distributed with the release (for example, on a CDROM distribution) will be out of date by definition, but other copies are kept updated on the Internet and should be consulted as the "current errata" for this release. These other copies of the errata are located at https://www.nsoiwdjgsld.gq/releases/, plus any sites which keep up-to-date mirrors of this location.

Source and binary snapshots of FreeBSD 15-STABLE also contain up-to-date copies of this document (as of the time of the snapshot).

For a list of all FreeBSD CERT security advisories, see https://www.nsoiwdjgsld.gq/security/.

Security Advisories

Advisory Date Topic

FreeBSD-SA-26:37.vm

30 June 2026

Use-after-free in device pager page list

FreeBSD-SA-26:38.jail

30 June 2026

Jail reference count underflow

FreeBSD-SA-26:39.execve

30 June 2026

Local privilege escalation via execve(2) TOCTOU race

FreeBSD-SA-26:40.zfs

30 June 2026

Multiple vulnerabilities in OpenZFS

FreeBSD-SA-26:41.libalias

30 June 2026

Buffer overflow in libalias RTSP handler

FreeBSD-SA-26:42.unlinkat

30 June 2026

unlinkat(2) ignores AT_RESOLVE_BENEATH flag

FreeBSD-SA-26:43.tcp

30 June 2026

Use-after-free in TCP RACK stack option handler

FreeBSD-SA-26:44.posixshm

30 June 2026

Multiple vulnerabilities in POSIX largepage objects

FreeBSD-SA-26:45.audit

30 June 2026

Incorrect audit records for ptrace(2) syscall requests

FreeBSD-SA-26:46.ktls

30 June 2026

Remote DOS via uninitialized memory access in KTLS receive

FreeBSD-SA-26:49.iconv

30 June 2026

Multiple vulnerabilities in iconv(3)

Errata Notices

Errata Date Topic

FreeBSD-EN-26:16.arm64

30 June 2026

32-bit setcontext(2) and swapcontext(2) fail on arm64

FreeBSD-EN-26:17.rpcsec_tls

30 June 2026

Socket refcount underflow in the NFS server

Open Issues

  1. The nfs(4) client may cause a kernel panic when an NFSv4.1 or NFSv4.2 server becomes unresponsive or reboots. The system will automatically reboot after the panic.
    Workaround: Avoid using soft or intr mount options with NFSv4.1/4.2 mounts. If the panic occurs frequently, consider downgrading to NFSv3 until a patched version is available.
    State: Fixed in main - https://bugs.freebsd.org/294925

  2. Systems with zfs(4) encrypted pools with keylocation=prompt datasets may stall waiting for a passphrase on boot if the zfskeys rc(8) script is enabled, diverging from previous behavior where mounting them would be skipped.
    Workaround: Use zpool set cachefile=none <pool> so that the pool is not imported at boot.
    State: Open - https://bugs.freebsd.org/296130

Late-Breaking News

No late-breaking news.

Last modified on: July 1, 2026 by Philip Paeps