CVE-2026-46053
Published May 27, 2026
Modified May 27, 2026
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
Other 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
Frequently Asked Questions
What is CVE-2026-46053? +
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.
How do I check if I'm vulnerable to CVE-2026-46053? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.