CVE-2026-46053

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0d4597c8c5abdeeaf50774066c16683f30184dc8 < 91a44b406bc1f9e1c5da0cb7d0d5991b43b79147affected
LinuxLinux0d4597c8c5abdeeaf50774066c16683f30184dc8 < 106dc689206610cfa2098f593fdd1e020c997835affected
LinuxLinux0d4597c8c5abdeeaf50774066c16683f30184dc8 < ec55a86f7fba7d9111df94b9c11a4755ed492995affected
LinuxLinux0d4597c8c5abdeeaf50774066c16683f30184dc8 < 8fdbb6262a4a3ed44a0830a7793903b54bb27bdcaffected
LinuxLinux0d4597c8c5abdeeaf50774066c16683f30184dc8 < d95cea9298be1ba8876e3f156be96d3a492085caaffected
LinuxLinux0d4597c8c5abdeeaf50774066c16683f30184dc8 < 033370ffb3c9c0264d19f8ba9ef769523266589aaffected
LinuxLinux0d4597c8c5abdeeaf50774066c16683f30184dc8 < b3cb8cae530b2727d8245684148bb49425f6765caffected
LinuxLinux0d4597c8c5abdeeaf50774066c16683f30184dc8 < 8141a2dc70080eda1aedc0389ed2db2b292af5bdaffected
LinuxLinux5.6affected
LinuxLinux0 < 5.6unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.86 <= 6.12.*unaffected
LinuxLinux6.18.27 <= 6.18.*unaffected
LinuxLinux7.0.4 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References