Critical 9.8Published Jul 1, 2026

CVE-2026-53355net: rds: clear i_sends on setup unwind

Updated under an hour ago (Oct 27, 2026, 9:00 AM ET)

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 3b12f73a5c2977153f28a224392fd4729b50d1dc before 66cccec111421a10efdc2c74499d15b93e7acae5; 3b12f73a5c2977153f28a224392fd4729b50d1dc builds before 2c5e5e4a5970c41f16e3ad801a78719ed5d5c71b; from 3b12f73a5c2977153f28a224392fd4729b50d1dc before 29d940026dce39e3018dab6f67c9427249321270; from 3b12f73a5c2977153f28a224392fd4729b50d1dc before e7cf30aa5f1fc6c2a86df65df8b731df20e44d79; from 3b12f73a5c2977153f28a224392fd4729b50d1dc before f16ad421a4e3e7db2d14bdf3b16f583bc4f3b30a; 3b12f73a5c2977153f28a224392fd4729b50d1dc builds before 1d4ec754ee3871f7e3670c67bb0298c9c5760926; from 3b12f73a5c2977153f28a224392fd4729b50d1dc before 27040bbca289a704eafcacca167d310c6ce2b1bc; from 3b12f73a5c2977153f28a224392fd4729b50d1dc before 20cf0fb715c41111469577e85e35d15f099473e0; and 8 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 3.18.74 before 3.19; from 4.1.46 before 4.2; from 4.4.91 before 4.5; from 4.9.54 before 4.10; from 4.11.1 before 5.10.259; from 5.11 before 5.15.210; from 5.16 before 6.1.176; from 6.2 before 6.6.143; and 16 more ranges	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.