CVE-2026-52985

In the Linux kernel, the following vulnerability has been resolved: netdevsim: zero initialize struct iphdr in dummy sk_buff Syzbot reports a KMSAN uninit-value originating from nsim_dev_trap_skb_build, with the allocation also being performed in the same function. Fix this by calling skb_put_zero instead of skb_put to guarantee zero initialization of the whole IP header.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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/175556c049eaec14efde8c6475e763b7579b9de7	Patch
https://git.kernel.org/stable/c/1b7b6ae0e93b8d512e208b1378d74af052e4f4e7	Patch
https://git.kernel.org/stable/c/35eaa6d8d6c2ee65e96f507add856e0eacf24591	Patch
https://git.kernel.org/stable/c/6e2cfd0904976e701d7a76b86b694e72af230ab0	Patch
https://git.kernel.org/stable/c/750d0091bebf44975421268d37484ef87060d263	Patch
https://git.kernel.org/stable/c/818f7673ed7f4a29d4b9cee8184c47d6e57162b4	Patch
https://git.kernel.org/stable/c/978ca6ff789f1f19c03288ac20cc1f4774e88490	Patch
https://git.kernel.org/stable/c/bc6002865e8c4fcf9e94975f7cf023448d8764e2	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:7.1:rc1::::::

History

No history.

Information

Published : 2026-06-24 17:17

Updated : 2026-07-14 16:47

NVD link : CVE-2026-52985

Mitre link : CVE-2026-52985

CVE.ORG link : CVE-2026-52985

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-908

Use of Uninitialized Resource

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