net/smc: Do not re-initialize smc hashtables

Summary

In the Linux kernel, the following vulnerability has been resolved: net/smc: Do not re-initialize smc hashtables INIT_HLIST_HEAD(&smc_v*_hashinfo.ht) are called after smc_nl_init(), proto_register() and sock_register(). This can lead to smc_v*_hashinfo.ht being reset even though hash entries already exist and are being used, possibly resulting in a corrupted list. Remove unnecessary and dangerous re-initialisation of smc_v*_hashinfo.ht in smc_init(); it is implicitly initialised to zero anyhow. Add HLIST_HEAD_INIT to the definitions for clarity.

Timeline

1. Jul 19, 2026, 2:56 PM UTCCVE published
2. Oct 16, 2026, 3:35 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. Oct 19, 2026, 8:18 PM UTCRecord last updated

Affected versions

• Linux Linux

  From f16a7dd5cf27eeda187425c9c7d96802a549f9c4 · fixed in cdc79c05cc375f68ae87b0c74fdaac1a5c93155a; From f16a7dd5cf27eeda187425c9c7d96802a549f9c4 · fixed in 2006605006e5a4a11d93e1ebdbbe95764d24276f; From f16a7dd5cf27eeda187425c9c7d96802a549f9c4 · fixed in 64c96e497d5ada0b90e99bf58f893aa2b73dcfbc; From f16a7dd5cf27eeda187425c9c7d96802a549f9c4 · fixed in ed7a758313011885347b854e97cb95903ef3c3f7; From f16a7dd5cf27eeda187425c9c7d96802a549f9c4 · fixed in 0cc9d0ac22d02f1ba1884de5d6de9eaf8b45d82d; From f16a7dd5cf27eeda187425c9c7d96802a549f9c4 · fixed in 55cba6b883b41e5922c00ba9d4e3262131f46f1b; From f16a7dd5cf27eeda187425c9c7d96802a549f9c4 · fixed in 5ec939367e700722ffbb1b7cacccbb1a3cf0ebd1; From f16a7dd5cf27eeda187425c9c7d96802a549f9c4 · fixed in 9e4389b0038781f19f97895186ed941ff8ac1678

• Linux Linux

  4.11

• KernelLinux

  From 4.11.0 · fixed in 5.10.259; From 5.11.0 · fixed in 5.15.210; From 5.16.0 · fixed in 6.1.176; From 6.2.0 · fixed in 6.6.143; From 6.7.0 · fixed in 6.12.93; From 6.13.0 · fixed in 6.18.35; From 6.19.0 · fixed in 7.0.12

References 8