HIGH 7.3 NVD
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 state
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.
References
- https://gnats.netbsd.org/60373
- https://www.vulncheck.com/advisories/netbsd-compat-netbsd32-double-free-use-after-free-via
This high severity vulnerability with a CVSS score of 7.3 was published on 2026-09-11 via NVD.
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