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CVE-2026-72120

can: bcm: add missing rcu list annotations and operations

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, and 4 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

In the Linux kernel, the following vulnerability has been resolved: can: bcm: add missing rcu list annotations and operations sashiko-bot remarked the missing use of list_add_rcu() in bcm_[rx|tx]_setup() to have a proper initialized bcm_op structure when bcm_proc_show() traverses the bcm_op's under rcu_read_lock(). To cover all initial settings of the bcm_op's the list_add_rcu() calls are moved to the end of the setup code. While at it, also fix the mirroring removal side: bcm_release() called bcm_remove_op() - which frees the op via call_rcu() - on ops that were still linked in bo->tx_ops/bo->rx_ops, without list_del_rcu() first. Unlink each op with list_del_rcu() before handing it to bcm_remove_op(), matching the existing pattern in bcm_delete_tx_op()/bcm_delete_rx_op().

Timeline

  1. CVE published
  2. CISA SSVC assessment

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

  3. Record last updated

Affected versions

  • Linux Linux

    From 659701c0b954ccdb4a916a4ad59bbc16e726d42c · fixed in 8357255e56dc1aaa437e3c53ee9385de984e0d57; From 0622846db728a5332b917c797c733e202c4620ae · fixed in 8e1c7257c81577130f5ce90f69b2a2c3ce63f957; From 6d7d458c41b98a5c1670cbd36f2923c37de51cf5 · fixed in eb1c26eab4d1f0b4450439b4b88c3e73faf1da98; From 1f912f8484e9c4396378c39460bbea0af681f319 · fixed in f53bdab85e64eb57d6899a30d1307fd5a3639cc7; From 63567ecd99a24495208dc860d50fb17440043006 · fixed in 4e22e8b505f877573bbdfdbcb680babad9b2f7a1; From dac5e6249159ac255dad9781793dbe5908ac9ddb · fixed in b06a4a397ac826603f39875cb7c7819a41365196; From dac5e6249159ac255dad9781793dbe5908ac9ddb · fixed in 30f7bb922cb7e7f072a56c7cb7a5efccd2ceca1d; From dac5e6249159ac255dad9781793dbe5908ac9ddb · fixed in 7b2c3eabc4dafc062a25e10711154f2107526a78; From 5.10.238 · fixed in 5.10.261; From 5.15.185 · fixed in 5.15.212; From 6.1.141 · fixed in 6.1.178; From 6.6.93 · fixed in 6.6.145; From 6.12.31 · fixed in 6.12.97; From 5.4.294 · fixed in 5.5; From 6.14.9 · fixed in 6.15

  • Linux Linux

    6.15

  • KernelLinux

    fixed in 5.10.261; From 5.11.0 · fixed in 5.15.212; From 5.16.0 · fixed in 6.1.178; From 6.2.0 · fixed in 6.6.145; From 6.7.0 · fixed in 6.12.97; From 6.13.0 · fixed in 6.18.40; From 6.15.0 · fixed in 7.1.5

References 8

git.kernel.org