CVE Feed

    Dashboard / CVE / CVE-2026-57842

    CVE-2026-57842

    NetBSD contains a use-after-free and double-free vulnerability in msg_recv_copyin() within the COMPAT_NETBSD32 compatibility layer due to a missing return statement before the cleanup label on the success path. Any local user able to execute a 32-bit binary on a 64-bit NetBSD system can trigger a kernel panic or memory corruption by calling recvmsg() with msg_iovlen between 9 and IOV_MAX, causing the kernel to access a freed iovec buffer and subsequently free the same allocation a second time.

    Published:Sep 11, 2026
    Last Modified:Oct 1, 2026
    EPS:Sep 11, 2026
    EPSS Score:0.00135
    CVSS Score:7

    Affected Products

    Vendor
    Netbsd
    Product
    Netbsd

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-57843 (CVSS 6.8) — NetBSD contains an information disclosure vulnerability in mm_open() within sys/dev/mm.c that allows unprivile…
    CVE-2026-53996 (CVSS 7.3) — NetBSD's hdaudio(4) driver in sys/dev/hdaudio/hdaudio.c contains a missing access control vulnerability that a…
    CVE-2024-6387 (CVSS 8.1) — A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition whi…
    CVE-2021-45484 (CVSS 7.5) — In NetBSD through 9.2, the IPv6 fragment ID generation algorithm employs a weak cryptographic PRNG.…
    CVE-2021-45487 (CVSS 7.5) — In NetBSD through 9.2, the IPv4 ID generation algorithm does not use appropriate cryptographic measures.…
    CVE-2021-45488 (CVSS 7.5) — In NetBSD through 9.2, there is an information leak in the TCP ISN (ISS) generation algorithm.…
    CVE-2021-45489 (CVSS 7.5) — In NetBSD through 9.2, the IPv6 Flow Label generation algorithm employs a weak cryptographic PRNG.…
    CVE-2020-26139 (CVSS 5.3) — An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clien…
    CVE-2012-5363 (CVSS 7.5) — The IPv6 implementation in FreeBSD and NetBSD (unknown versions, year 2012 and earlier) allows remote attacker…
    CVE-2012-5365 (CVSS 7.5) — The IPv6 implementation in FreeBSD and NetBSD (unknown versions, year 2012 and earlier) allows remote attacker…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High