CVE-2026-53355

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3b12f73a5c2977153f28a224392fd4729b50d1dc < 66cccec111421a10efdc2c74499d15b93e7acae5affected
LinuxLinux3b12f73a5c2977153f28a224392fd4729b50d1dc < 2c5e5e4a5970c41f16e3ad801a78719ed5d5c71baffected
LinuxLinux3b12f73a5c2977153f28a224392fd4729b50d1dc < 29d940026dce39e3018dab6f67c9427249321270affected
LinuxLinux3b12f73a5c2977153f28a224392fd4729b50d1dc < e7cf30aa5f1fc6c2a86df65df8b731df20e44d79affected
LinuxLinux3b12f73a5c2977153f28a224392fd4729b50d1dc < f16ad421a4e3e7db2d14bdf3b16f583bc4f3b30aaffected
LinuxLinux3b12f73a5c2977153f28a224392fd4729b50d1dc < 1d4ec754ee3871f7e3670c67bb0298c9c5760926affected
LinuxLinux3b12f73a5c2977153f28a224392fd4729b50d1dc < 27040bbca289a704eafcacca167d310c6ce2b1bcaffected
LinuxLinux3b12f73a5c2977153f28a224392fd4729b50d1dc < 20cf0fb715c41111469577e85e35d15f099473e0affected
LinuxLinux75a12b2fa80c2e4cc40a9f9305f95899850b7426affected
LinuxLinuxc9459693fae9a1bf3f51f3db98617f694112e897affected
LinuxLinux13099ee9c7d54b0a25f6c8397675aed99e9cfa45affected
LinuxLinux5c6712ab4efb6cf60e16719ab6bcaface9cc268caffected
LinuxLinux3.18.74 < 3.19affected
LinuxLinux4.1.46 < 4.2affected
LinuxLinux4.4.91 < 4.5affected
LinuxLinux4.9.54 < 4.10affected
LinuxLinux4.11affected
LinuxLinux0 < 4.11unaffected
LinuxLinux5.10.259 <= 5.10.*unaffected
LinuxLinux5.15.210 <= 5.15.*unaffected
LinuxLinux6.1.176 <= 6.1.*unaffected
LinuxLinux6.6.143 <= 6.6.*unaffected
LinuxLinux6.12.94 <= 6.12.*unaffected
LinuxLinux6.18.36 <= 6.18.*unaffected
LinuxLinux7.0.13 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References