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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/033370ffb3c9c0264d19f8ba9ef769523266589aPatch
- https://git.kernel.org/stable/c/106dc689206610cfa2098f593fdd1e020c997835Patch
- https://git.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bdPatch
- https://git.kernel.org/stable/c/8fdbb6262a4a3ed44a0830a7793903b54bb27bdcPatch
- https://git.kernel.org/stable/c/91a44b406bc1f9e1c5da0cb7d0d5991b43b79147Patch
- https://git.kernel.org/stable/c/b3cb8cae530b2727d8245684148bb49425f6765cPatch
- https://git.kernel.org/stable/c/d95cea9298be1ba8876e3f156be96d3a492085caPatch
- https://git.kernel.org/stable/c/ec55a86f7fba7d9111df94b9c11a4755ed492995Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.