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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-43085 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: initialize nfgenmsg in NLMSG_DONE terminator When batching multiple NFLOG messages (inst->qlen > 1), __nfulnl_send() appends an NLMSG_DONE terminator with sizeof(struct nfgenmsg) payload via nlmsg_put(), but never initializes the nfgenmsg bytes. The nlmsg_put() helper only zeroes alignment padding after the payload, not the payload itself, so four bytes of stale kernel heap data are leaked to userspace in the NLMSG_DONE message body. Use nfnl_msg_put() to build the NLMSG_DONE terminator, which initializes the nfgenmsg payload via nfnl_fill_hdr(), consistent with how __build_packet_message() already constructs NFULNL_MSG_PACKET headers.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/15d209bccf9273b4a8b4e579ba0e92d065b6ec8c kernel.org Patch 
https://git.kernel.org/stable/c/1f3083aec8836213da441270cdb1ab612dd82cf4 kernel.org Patch 
https://git.kernel.org/stable/c/296f18e1c3a87c915a92ed27832d5040a22d1072 kernel.org Patch 
https://git.kernel.org/stable/c/368c22aea490f6f50df831b4f9e3623787686c5b kernel.org Patch 
https://git.kernel.org/stable/c/57cc509d82b46150a11dcecc8b25eaa177eda34d kernel.org Patch 
https://git.kernel.org/stable/c/9e2182865de781c41ab16b7985e9d26dcefea867 kernel.org Patch 
https://git.kernel.org/stable/c/d1399632ba255d2e02c757af5d9f5d9279ce168c kernel.org Patch 
https://git.kernel.org/stable/c/d552bcfca323d175664d7444989b04f55666978a kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43085
NVD Published Date:
05/06/2026
NVD Last Modified:
06/01/2026
Source:
kernel.org