CVE-2026-31536

CriticalCVSS 9.8/10Last modified Nov 11, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

smb: server: let send_done handle a completion without IB_SEND_SIGNALED

With smbdirect_send_batch processing we likely have requests without IB_SEND_SIGNALED, which will be destroyed in the final request that has IB_SEND_SIGNALED set.

If the connection is broken all requests are signaled even without explicit IB_SEND_SIGNALED.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

VendorProductVersions
LinuxLinux>= 0626e6641f6b467447c81dd7678a69c66f7746cf, < 24082642654f3e5149913946e89c00a297a8868f; >= 0626e6641f6b467447c81dd7678a69c66f7746cf, < e38b415c024bc3b6321bf8650dbf3f4aab8e74b3; >= 0626e6641f6b467447c81dd7678a69c66f7746cf, < 9da82dc73cb03e85d716a2609364572367a5ff47
LinuxLinux5.15

References

Timeline

Published
Apr 24, 2026
Last modified
Nov 11, 2026
NVD status
Analyzed

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CVE-2026-31536: Critical severity, CVSS 9.8 | Vulnix