What’s Vulnerable › Vulnerabilities

CVE-2026-53077: net/rds: Restrict use of RDS/IB to the initial network namespace

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-24 · updated 2026-07-21

Description

In the Linux kernel, the following vulnerability has been resolved: net/rds: Restrict use of RDS/IB to the initial network namespace Prevent using RDS/IB in network namespaces other than the initial one. The existing RDS/IB code will not work properly in non-initial network namespaces.

Affected products

• Linux kernel: from 4.3 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.12.91, 6.18.33, 6.6.141

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.12.91. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/07035306bf722f4676a1aee35cbeb3732c76194e
• https://git.kernel.org/stable/c/3174fc703d081d2ca538b22fba734e3ad5b52322
• https://git.kernel.org/stable/c/3e7f14cd5a51533404e1ae4809caab46073fb5c7
• https://git.kernel.org/stable/c/a7494479757d60d2413bfaa087f8431a26eea032
• https://git.kernel.org/stable/c/b6a54f5e9ce9b97ae641855378d71c5154a085c0
• https://git.kernel.org/stable/c/c244b79adffad89a5173cf8bfaa06a6b40bbd09b
• https://git.kernel.org/stable/c/ebf71dd4aff46e8e421d455db3e231ba43d2fa8a
• https://git.kernel.org/stable/c/fb407343c0c16e94584707b2dfdd350a5f81b000

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