CVE-2026-43085

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43085
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/15d209bccf9273b4a8b4e579ba0e92d065b6ec8c Patch
https://git.kernel.org/stable/c/1f3083aec8836213da441270cdb1ab612dd82cf4 Patch
https://git.kernel.org/stable/c/296f18e1c3a87c915a92ed27832d5040a22d1072 Patch
https://git.kernel.org/stable/c/368c22aea490f6f50df831b4f9e3623787686c5b Patch
https://git.kernel.org/stable/c/57cc509d82b46150a11dcecc8b25eaa177eda34d Patch
https://git.kernel.org/stable/c/9e2182865de781c41ab16b7985e9d26dcefea867 Patch
https://git.kernel.org/stable/c/d1399632ba255d2e02c757af5d9f5d9279ce168c Patch
https://git.kernel.org/stable/c/d552bcfca323d175664d7444989b04f55666978a Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
History

01 Jun 2026, 18:14

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/15d209bccf9273b4a8b4e579ba0e92d065b6ec8c - () https://git.kernel.org/stable/c/15d209bccf9273b4a8b4e579ba0e92d065b6ec8c - Patch
References () https://git.kernel.org/stable/c/1f3083aec8836213da441270cdb1ab612dd82cf4 - () https://git.kernel.org/stable/c/1f3083aec8836213da441270cdb1ab612dd82cf4 - Patch
References () https://git.kernel.org/stable/c/296f18e1c3a87c915a92ed27832d5040a22d1072 - () https://git.kernel.org/stable/c/296f18e1c3a87c915a92ed27832d5040a22d1072 - Patch
References () https://git.kernel.org/stable/c/368c22aea490f6f50df831b4f9e3623787686c5b - () https://git.kernel.org/stable/c/368c22aea490f6f50df831b4f9e3623787686c5b - Patch
References () https://git.kernel.org/stable/c/57cc509d82b46150a11dcecc8b25eaa177eda34d - () https://git.kernel.org/stable/c/57cc509d82b46150a11dcecc8b25eaa177eda34d - Patch
References () https://git.kernel.org/stable/c/9e2182865de781c41ab16b7985e9d26dcefea867 - () https://git.kernel.org/stable/c/9e2182865de781c41ab16b7985e9d26dcefea867 - Patch
References () https://git.kernel.org/stable/c/d1399632ba255d2e02c757af5d9f5d9279ce168c - () https://git.kernel.org/stable/c/d1399632ba255d2e02c757af5d9f5d9279ce168c - Patch
References () https://git.kernel.org/stable/c/d552bcfca323d175664d7444989b04f55666978a - () https://git.kernel.org/stable/c/d552bcfca323d175664d7444989b04f55666978a - Patch
CWE NVD-CWE-noinfo
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23:-:*:*:*:*:*:*

01 Jun 2026, 17:17

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/296f18e1c3a87c915a92ed27832d5040a22d1072 -
  • () https://git.kernel.org/stable/c/57cc509d82b46150a11dcecc8b25eaa177eda34d -
  • () https://git.kernel.org/stable/c/9e2182865de781c41ab16b7985e9d26dcefea867 -

06 May 2026, 10:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-06 10:16

Updated : 2026-06-01 18:14

NVD link : CVE-2026-43085

Mitre link : CVE-2026-43085

CVE.ORG link : CVE-2026-43085

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo