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.
Product status
da58f90f11f597520f226caff1d3cfc115abedc9 (git) before 175556c049eaec14efde8c6475e763b7579b9de7
da58f90f11f597520f226caff1d3cfc115abedc9 (git) before 6e2cfd0904976e701d7a76b86b694e72af230ab0
da58f90f11f597520f226caff1d3cfc115abedc9 (git) before 1b7b6ae0e93b8d512e208b1378d74af052e4f4e7
da58f90f11f597520f226caff1d3cfc115abedc9 (git) before 818f7673ed7f4a29d4b9cee8184c47d6e57162b4
da58f90f11f597520f226caff1d3cfc115abedc9 (git) before 978ca6ff789f1f19c03288ac20cc1f4774e88490
da58f90f11f597520f226caff1d3cfc115abedc9 (git) before 750d0091bebf44975421268d37484ef87060d263
da58f90f11f597520f226caff1d3cfc115abedc9 (git) before bc6002865e8c4fcf9e94975f7cf023448d8764e2
da58f90f11f597520f226caff1d3cfc115abedc9 (git) before 35eaa6d8d6c2ee65e96f507add856e0eacf24591
5.4
Any version before 5.4
5.10.258 (semver)
5.15.209 (semver)
6.1.175 (semver)
6.6.141 (semver)
6.12.91 (semver)
6.18.33 (semver)
7.0.10 (semver)
7.1 (original_commit_for_fix)
References
git.kernel.org/...c/175556c049eaec14efde8c6475e763b7579b9de7
git.kernel.org/...c/6e2cfd0904976e701d7a76b86b694e72af230ab0
git.kernel.org/...c/1b7b6ae0e93b8d512e208b1378d74af052e4f4e7
git.kernel.org/...c/818f7673ed7f4a29d4b9cee8184c47d6e57162b4
git.kernel.org/...c/978ca6ff789f1f19c03288ac20cc1f4774e88490
git.kernel.org/...c/750d0091bebf44975421268d37484ef87060d263
git.kernel.org/...c/bc6002865e8c4fcf9e94975f7cf023448d8764e2
git.kernel.org/...c/35eaa6d8d6c2ee65e96f507add856e0eacf24591