can: bcm: add missing rcu list annotations and operations
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
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().
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.10.238 to before 5.10.261; 5.15.185 to before 5.15.212; 6.1.141 to before 6.1.178; 6.6.93 to before 6.6.145; 6.12.31 to before 6.12.97; 5.4.294 to before 5.5; 6.14.9 to before 6.15 | 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 5.5, 6.15 | Patch available | CNA |
| Linux | Linux | 6.15 and later | 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2 | Patch available | CNA |
- Linux VendorLinux Affected 5.10.238 to before 5.10.261; 5.15.185 to before 5.15.212; 6.1.141 to before 6.1.178; 6.6.93 to before 6.6.145; 6.12.31 to before 6.12.97; 5.4.294 to before 5.5; 6.14.9 to before 6.15 Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 5.5, 6.15 Patch available CNA
- Linux VendorLinux Affected 6.15 and later Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 5.5, 6.15
- Fix · CNA Linux (Linux) Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
Not affected: 4 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-72120
- 2026-10-03 Alias added: GHSA-v4mr-5hv5-p6wp
- 2026-10-16 CISA SSVC decision points changed
References
Other 8
- https://git.kernel.org/stable/c/8357255e56dc1aaa437e3c53ee9385de984e0d57
- https://git.kernel.org/stable/c/8e1c7257c81577130f5ce90f69b2a2c3ce63f957
- https://git.kernel.org/stable/c/eb1c26eab4d1f0b4450439b4b88c3e73faf1da98
- https://git.kernel.org/stable/c/f53bdab85e64eb57d6899a30d1307fd5a3639cc7
- https://git.kernel.org/stable/c/4e22e8b505f877573bbdfdbcb680babad9b2f7a1
- https://git.kernel.org/stable/c/b06a4a397ac826603f39875cb7c7819a41365196
- https://git.kernel.org/stable/c/30f7bb922cb7e7f072a56c7cb7a5efccd2ceca1d
- https://git.kernel.org/stable/c/7b2c3eabc4dafc062a25e10711154f2107526a78
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- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2026-72120 · CVE Program
- CVE-2026-72120 · NVD
- FIRST EPSS
- GHSA-v4mr-5hv5-p6wp · GitHub Advisory Database · CC BY 4.0
- CVE-2026-72120 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences