CVE-2026-52985
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.
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | da58f90f11f597520f226caff1d3cfc115abedc9 < 175556c049eaec14efde8c6475e763b7579b9de7, da58f90f11f597520f226caff1d3cfc115abedc9 < 6e2cfd0904976e701d7a76b86b694e72af230ab0, da58f90f11f597520f226caff1d3cfc115abedc9 < 1b7b6ae0e93b8d512e208b1378d74af052e4f4e7, da58f90f11f597520f226caff1d3cfc115abedc9 < 818f7673ed7f4a29d4b9cee8184c47d6e57162b4 … |
| Linux | Linux | — | 5.4, 0 < 5.4, 5.10.258 ≤ 5.10.*, 5.15.209 ≤ 5.15.* … |
References (8)
- https://git.kernel.org/stable/c/175556c049eaec14efde8c6475e763b7579b9de7
- https://git.kernel.org/stable/c/6e2cfd0904976e701d7a76b86b694e72af230ab0
- https://git.kernel.org/stable/c/1b7b6ae0e93b8d512e208b1378d74af052e4f4e7
- https://git.kernel.org/stable/c/818f7673ed7f4a29d4b9cee8184c47d6e57162b4
- https://git.kernel.org/stable/c/978ca6ff789f1f19c03288ac20cc1f4774e88490
- https://git.kernel.org/stable/c/750d0091bebf44975421268d37484ef87060d263
- https://git.kernel.org/stable/c/bc6002865e8c4fcf9e94975f7cf023448d8764e2
- https://git.kernel.org/stable/c/35eaa6d8d6c2ee65e96f507add856e0eacf24591