In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Do not register event handler until srpt device is fully setup Upon rare occasions, KASAN reports a use-after-free Write in srpt_refresh_port(). This seems to be because an event handler is registered before the srpt device is fully setup and a race condition upon error may leave a partially setup event handler in place. Instead, only register the event handler after srpt device initialization is complete.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| https://git.kernel.org/stable/c/bdd895e0190c464f54f84579e7535d80276f0fc5 | patch mailing list |
| https://git.kernel.org/stable/c/6413e78086caf7bf15639923740da0d91fdfd090 | patch mailing list |
| https://git.kernel.org/stable/c/e362d007294955a4fb929e1c8978154a64efdcb6 | patch mailing list |
| https://git.kernel.org/stable/c/85570b91e4820a0db9d9432098778cafafa7d217 | patch mailing list |
| https://git.kernel.org/stable/c/7104a00fa37ae898a827381f1161fa3286c8b346 | patch mailing list |
| https://git.kernel.org/stable/c/ec77fa12da41260c6bf9e060b89234b980c5130f | patch mailing list |
| https://git.kernel.org/stable/c/c21a8870c98611e8f892511825c9607f1e2cd456 | patch mailing list |
| https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html | mailing list |