CVE-2026-43092

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43092
In the Linux kernel, the following vulnerability has been resolved: xsk: validate MTU against usable frame size on bind AF_XDP bind currently accepts zero-copy pool configurations without verifying that the device MTU fits into the usable frame space provided by the UMEM chunk. This becomes a problem since we started to respect tailroom which is subtracted from chunk_size (among with headroom). 2k chunk size might not provide enough space for standard 1500 MTU, so let us catch such settings at bind time. Furthermore, validate whether underlying HW will be able to satisfy configured MTU wrt XSK's frame size multiplied by supported Rx buffer chain length (that is exposed via net_device::xdp_zc_max_segs).

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/25e1e91a8da819924df0b16e3812d7b24c8ce133 Patch
https://git.kernel.org/stable/c/36ee60b569ba0dfb6f961333b90d19ab5b323fa9 Patch
https://git.kernel.org/stable/c/a55793e5a97d4e39bdb380873a9780fe0010bff6 Patch
https://git.kernel.org/stable/c/b2f4daa6422fd6cc0cec969794dab4a88ea4cea1 Patch
https://git.kernel.org/stable/c/f669d60db11dbabb96279f2b20f9d1cba43cddb2 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: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

19 May 2026, 20:41

Type Values Removed Values Added
CWE NVD-CWE-noinfo
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/25e1e91a8da819924df0b16e3812d7b24c8ce133 - () https://git.kernel.org/stable/c/25e1e91a8da819924df0b16e3812d7b24c8ce133 - Patch
References () https://git.kernel.org/stable/c/36ee60b569ba0dfb6f961333b90d19ab5b323fa9 - () https://git.kernel.org/stable/c/36ee60b569ba0dfb6f961333b90d19ab5b323fa9 - Patch
References () https://git.kernel.org/stable/c/a55793e5a97d4e39bdb380873a9780fe0010bff6 - () https://git.kernel.org/stable/c/a55793e5a97d4e39bdb380873a9780fe0010bff6 - Patch
References () https://git.kernel.org/stable/c/b2f4daa6422fd6cc0cec969794dab4a88ea4cea1 - () https://git.kernel.org/stable/c/b2f4daa6422fd6cc0cec969794dab4a88ea4cea1 - Patch
References () https://git.kernel.org/stable/c/f669d60db11dbabb96279f2b20f9d1cba43cddb2 - () https://git.kernel.org/stable/c/f669d60db11dbabb96279f2b20f9d1cba43cddb2 - Patch

06 May 2026, 10:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-06 10:16

Updated : 2026-05-19 20:41

NVD link : CVE-2026-43092

Mitre link : CVE-2026-43092

CVE.ORG link : CVE-2026-43092

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo