CVE-2026-53355

net: rds: clear i_sends on setup unwind

State: Published
Severity: 9.8 Critical
Published: Jul 1, 2026
Updated: Aug 5, 2026
Reserved: Jun 9, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	3b12f73a5c2977153f28a224392fd4729b50d1dc to before 66cccec111421a10efdc2c74499d15b93e7acae5Affected 3b12f73a5c2977153f28a224392fd4729b50d1dc to before 2c5e5e4a5970c41f16e3ad801a78719ed5d5c71bAffected 3b12f73a5c2977153f28a224392fd4729b50d1dc to before 29d940026dce39e3018dab6f67c9427249321270Affected 3b12f73a5c2977153f28a224392fd4729b50d1dc to before e7cf30aa5f1fc6c2a86df65df8b731df20e44d79Affected 3b12f73a5c2977153f28a224392fd4729b50d1dc to before f16ad421a4e3e7db2d14bdf3b16f583bc4f3b30aAffected 3b12f73a5c2977153f28a224392fd4729b50d1dc to before 1d4ec754ee3871f7e3670c67bb0298c9c5760926Affected 3b12f73a5c2977153f28a224392fd4729b50d1dc to before 27040bbca289a704eafcacca167d310c6ce2b1bcAffected 3b12f73a5c2977153f28a224392fd4729b50d1dc to before 20cf0fb715c41111469577e85e35d15f099473e0Affected 75a12b2fa80c2e4cc40a9f9305f95899850b7426Affected c9459693fae9a1bf3f51f3db98617f694112e897Affected 13099ee9c7d54b0a25f6c8397675aed99e9cfa45Affected 5c6712ab4efb6cf60e16719ab6bcaface9cc268cAffected 3.18.74 to before 3.19Affected 4.1.46 to before 4.2Affected 4.4.91 to before 4.5Affected 4.9.54 to before 4.10Affected
LinuxLinux	4.11Affected before 4.11Not affected 5.10.259 through 5.10.Not affected 5.15.210 through 5.15.Not affected 6.1.176 through 6.1.Not affected 6.6.143 through 6.6.Not affected 6.12.94 through 6.12.Not affected 6.18.36 through 6.18.Not affected 7.0.13 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

3b12f73a5c2977153f28a224392fd4729b50d1dc to before 66cccec111421a10efdc2c74499d15b93e7acae5Affected
3b12f73a5c2977153f28a224392fd4729b50d1dc to before 2c5e5e4a5970c41f16e3ad801a78719ed5d5c71bAffected
3b12f73a5c2977153f28a224392fd4729b50d1dc to before 29d940026dce39e3018dab6f67c9427249321270Affected
3b12f73a5c2977153f28a224392fd4729b50d1dc to before e7cf30aa5f1fc6c2a86df65df8b731df20e44d79Affected
3b12f73a5c2977153f28a224392fd4729b50d1dc to before f16ad421a4e3e7db2d14bdf3b16f583bc4f3b30aAffected
3b12f73a5c2977153f28a224392fd4729b50d1dc to before 1d4ec754ee3871f7e3670c67bb0298c9c5760926Affected
3b12f73a5c2977153f28a224392fd4729b50d1dc to before 27040bbca289a704eafcacca167d310c6ce2b1bcAffected
3b12f73a5c2977153f28a224392fd4729b50d1dc to before 20cf0fb715c41111469577e85e35d15f099473e0Affected
75a12b2fa80c2e4cc40a9f9305f95899850b7426Affected
c9459693fae9a1bf3f51f3db98617f694112e897Affected
13099ee9c7d54b0a25f6c8397675aed99e9cfa45Affected
5c6712ab4efb6cf60e16719ab6bcaface9cc268cAffected
3.18.74 to before 3.19Affected
4.1.46 to before 4.2Affected
4.4.91 to before 4.5Affected
4.9.54 to before 4.10Affected

LinuxLinux

4.11Affected
before 4.11Not affected
5.10.259 through 5.10.*Not affected
5.15.210 through 5.15.*Not affected
6.1.176 through 6.1.*Not affected
6.6.143 through 6.6.*Not affected
6.12.94 through 6.12.*Not affected
6.18.36 through 6.18.*Not affected
7.0.13 through 7.0.*Not affected
7.1 and laterNot affected

References

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