High 7.8Published May 27, 2026

CVE-2026-46053net: rds: fix MR cleanup on copy error

Updated under an hour ago (Oct 26, 2026, 6:10 PM ET)

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0d4597c8c5abdeeaf50774066c16683f30184dc8 before 91a44b406bc1f9e1c5da0cb7d0d5991b43b79147; from 0d4597c8c5abdeeaf50774066c16683f30184dc8 before 106dc689206610cfa2098f593fdd1e020c997835; from 0d4597c8c5abdeeaf50774066c16683f30184dc8 before ec55a86f7fba7d9111df94b9c11a4755ed492995; from 0d4597c8c5abdeeaf50774066c16683f30184dc8 before 8fdbb6262a4a3ed44a0830a7793903b54bb27bdc; from 0d4597c8c5abdeeaf50774066c16683f30184dc8 before d95cea9298be1ba8876e3f156be96d3a492085ca; from 0d4597c8c5abdeeaf50774066c16683f30184dc8 before 033370ffb3c9c0264d19f8ba9ef769523266589a; from 0d4597c8c5abdeeaf50774066c16683f30184dc8 before b3cb8cae530b2727d8245684148bb49425f6765c; from 0d4597c8c5abdeeaf50774066c16683f30184dc8 before 8141a2dc70080eda1aedc0389ed2db2b292af5bd	CNA record
linux linux_kernel linux:linux_kernel	from 5.6.1 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4; 5.6; and 5 more ranges	NVD

References

References

https://git.kernel.org/stable/c/91a44b406bc1f9e1c5da0cb7d0d5991b43b79147	patch
https://git.kernel.org/stable/c/106dc689206610cfa2098f593fdd1e020c997835	patch
https://git.kernel.org/stable/c/ec55a86f7fba7d9111df94b9c11a4755ed492995	patch
https://git.kernel.org/stable/c/8fdbb6262a4a3ed44a0830a7793903b54bb27bdc	patch
https://git.kernel.org/stable/c/d95cea9298be1ba8876e3f156be96d3a492085ca	patch
https://git.kernel.org/stable/c/033370ffb3c9c0264d19f8ba9ef769523266589a	patch
https://git.kernel.org/stable/c/b3cb8cae530b2727d8245684148bb49425f6765c	patch
https://git.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bd	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.