CVE-2026-46053

Description

In the Linux kernel, the following vulnerability has been resolved: net: rds: fix MR cleanup on copy error __rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds. If copying the generated cookie back to user space fails after that point, the error path must not free those resources again before dropping the MR reference. Remove the duplicate unpin/free from the put_user() failure branch so that MR teardown is handled only through the existing final cleanup path.

References

• https://git.kernel.org/stable/c/033370ffb3c9c0264d19f8ba9ef769523266589a
• https://git.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bd
• https://git.kernel.org/stable/c/8fdbb6262a4a3ed44a0830a7793903b54bb27bdc
• https://git.kernel.org/stable/c/b3cb8cae530b2727d8245684148bb49425f6765c
• https://git.kernel.org/stable/c/d95cea9298be1ba8876e3f156be96d3a492085ca