7.8

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

Analyzed
AliasesUBUNTU-CVE-2026-46053DEBIAN-CVE-2026-46053
Published 27-05-2026Last modified 05-08-2026

Vulnerability summary

CVE-2026-46053 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.18%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 45 · Related 45
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22521-1SUSE-SU-2026:22522-1SUSE-SU-2026:22665-1SUSE-SU-2026:22666-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

Increase +0.05 pp

From 0.13% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu147 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 0d4597c8c5abdeeaf50774066c16683f30184dc8, < 91a44b406bc1f9e1c5da0cb7d0d5991b43b79147 | ≥ 0d4597c8c5abdeeaf50774066c16683f30184dc8, < 106dc689206610cfa2098f593fdd1e020c997835 | ≥ 0d4597c8c5abdeeaf50774066c16683f30184dc8, < ec55a86f7fba7d9111df94b9c11a4755ed492995 | ≥ 0d4597c8c5abdeeaf50774066c16683f30184dc8, < 8fdbb6262a4a3ed44a0830a7793903b54bb27bdc | ≥ 0d4597c8c5abdeeaf50774066c16683f30184dc8, < d95cea9298be1ba8876e3f156be96d3a492085ca | ≥ 0d4597c8c5abdeeaf50774066c16683f30184dc8, < 033370ffb3c9c0264d19f8ba9ef769523266589a | ≥ 0d4597c8c5abdeeaf50774066c16683f30184dc8, < b3cb8cae530b2727d8245684148bb49425f6765c | ≥ 0d4597c8c5abdeeaf50774066c16683f30184dc8, < 8141a2dc70080eda1aedc0389ed2db2b292af5bd | 5.6
  • linux_kernel≥ 5.6.1, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.86 | ≥ 6.13, < 6.18.27 | ≥ 6.19, < 7.0.4 | 5.6 | 5.6:rc3 | 5.6:rc4 | 5.6:rc5 | 5.6:rc6 | 5.6:rc7
Debian1 product
  • linux< 6.1.176-1 | < 6.12.86-1 | < 7.0.4-1

3 vendors · 150 products

References

46 links
Show all 46 references