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…
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
Description
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-908
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/175556c049eaec14efde8c6475e763b7579b9de7Patch
- https://git.kernel.org/stable/c/1b7b6ae0e93b8d512e208b1378d74af052e4f4e7Patch
- https://git.kernel.org/stable/c/35eaa6d8d6c2ee65e96f507add856e0eacf24591Patch
- https://git.kernel.org/stable/c/6e2cfd0904976e701d7a76b86b694e72af230ab0Patch
- https://git.kernel.org/stable/c/750d0091bebf44975421268d37484ef87060d263Patch
- https://git.kernel.org/stable/c/818f7673ed7f4a29d4b9cee8184c47d6e57162b4Patch
- https://git.kernel.org/stable/c/978ca6ff789f1f19c03288ac20cc1f4774e88490Patch
- https://git.kernel.org/stable/c/bc6002865e8c4fcf9e94975f7cf023448d8764e2Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.