CVE-2026-93110 PUBLISHED

RDMA/core: Wait for RCU callbacks before unloading ib_core

Assigner: Linux
Reserved: 17.09.2026 Published: 17.09.2026 Updated: 17.09.2026

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

RDMA/core: Wait for RCU callbacks before unloading ib_core

put_gid_ndev() is queued with call_rcu() and implemented in ib_core. Stopping the workqueues does not drain callbacks already queued, so RCU could invoke it after the module code has been unloaded.

synchronize_rcu() does not wait for callbacks. Wait for them after all producers have stopped.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 943bd984b108b3bb778790c2da4ae8d186b547e6 to 82dfd1df456227279b1c8c648983a530f2612098 (excl.)
  • affected from 943bd984b108b3bb778790c2da4ae8d186b547e6 to 1646e123e56c3ad679fbfb571e8eef6386efb729 (excl.)
  • affected from 943bd984b108b3bb778790c2da4ae8d186b547e6 to 8e4f1677c09d75d738099f42afcf65d8587b664a (excl.)
  • affected from 943bd984b108b3bb778790c2da4ae8d186b547e6 to 7853af5f15738dc00aebaa1fc9f1f0df40f6f603 (excl.)
  • affected from 943bd984b108b3bb778790c2da4ae8d186b547e6 to 0d5817fa4819abdc445fa77b5be4f0d49334a864 (excl.)
  • affected from 943bd984b108b3bb778790c2da4ae8d186b547e6 to 9d998297fdaf47492f6679287f6552879d1a7e3a (excl.)
  • affected from 943bd984b108b3bb778790c2da4ae8d186b547e6 to 48b72fa0d209a92fb51b834a6080171cfa207b2c (excl.)
  • affected from 943bd984b108b3bb778790c2da4ae8d186b547e6 to 7d75592114d1664623c8cf191a12b38052c04483 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.2 is affected
  • unaffected from 0 to 5.2 (excl.)
  • unaffected from 5.10.270 to 5.10.* (incl.)
  • unaffected from 5.15.221 to 5.15.* (incl.)
  • unaffected from 6.1.188 to 6.1.* (incl.)
  • unaffected from 6.6.157 to 6.6.* (incl.)
  • unaffected from 6.12.110 to 6.12.* (incl.)
  • unaffected from 6.18.52 to 6.18.* (incl.)
  • unaffected from 7.2.6 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References