CRITICAL: CVE-2026-53355 (CVSS 9.8) — multiple products

CVE: CVE-2026-53355

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

Severity: CRITICAL

Status: Critical advisory

Affected

_See vendor advisory_

Summary

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

net: rds: clear i_sends on setup unwind

The RDS IB connection teardown path is written so it can run during

partial startup and on repeated shutdown attempts. It uses NULL

pointers to distinguish resources that are still owned from resources

that have already been released.

When rds_ib_setup_qp() fails after allocating i_sends but before

allocating i_recvs, the sends_out path frees i_sends without clearing

the pointer. A later shutdown pass can still treat that stale pointer

as a live send ring allocation.

Clear i_sends after vfree() in the error unwind path so the existing

shutdown logic continues to use the correct ownership state.

Verified Sources

• NVD entry
• GitHub Advisory
• MITRE

References

• https://git.kernel.org/stable/c/1d4ec754ee3871f7e3670c67bb0298c9c5760926
• https://git.kernel.org/stable/c/20cf0fb715c41111469577e85e35d15f099473e0
• https://git.kernel.org/stable/c/27040bbca289a704eafcacca167d310c6ce2b1bc
• https://git.kernel.org/stable/c/29d940026dce39e3018dab6f67c9427249321270
• https://git.kernel.org/stable/c/2c5e5e4a5970c41f16e3ad801a78719ed5d5c71b
• https://git.kernel.org/stable/c/66cccec111421a10efdc2c74499d15b93e7acae5
• https://git.kernel.org/stable/c/e7cf30aa5f1fc6c2a86df65df8b731df20e44d79
• https://git.kernel.org/stable/c/f16ad421a4e3e7db2d14bdf3b16f583bc4f3b30a

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._