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CVE PROGRAM SOURCE RECORD7.3 High

CVE-2026-57842

NetBSD COMPAT_NETBSD32 Double Free / Use-After-Free via recvmsg() msg_iovlen

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

The NetBSD Foundation NetBSD

Default version status: unaffected

  • 8.0 to ≤ 8.3affected
  • 9.0 to < 9.5affected
  • 10.0 to ≤ 10.1affected

References