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Vulnerability record · CVE-2026-46053 · published 27 May 2026

CVE-2026-46053: Linux kernel vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.6%
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

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/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-46053), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.