High

CVE-2026-72120 — can: bcm: add missing rcu list annotations and operations

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().

Published Aug 15, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

—

No EPSS score.

Affects

Linux

CVSS base

7.8

High · 2 source(s)

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	version 7c9db92d5f0eadca30884af75c53d601edc512eeversion 6.15≥ 6.14.9 and < 6.15≥ 5.4.294 and < 5.5≥ 6.12.31 and < 6.12.97≥ 6.6.93 and < 6.6.145≥ 6.1.141 and < 6.1.178≥ 5.15.185 and < 5.15.212 and 10 more ≥ 5.10.238 and < 5.10.261≥ 659701c0b954ccdb4a916a4ad59bbc16e726d42c and < 8357255e56dc1aaa437e3c53ee9385de984e0d57version 19f553a1ddf260da6570ed8f8d91a8c87f49b63a≥ dac5e6249159ac255dad9781793dbe5908ac9ddb and < 7b2c3eabc4dafc062a25e10711154f2107526a78≥ dac5e6249159ac255dad9781793dbe5908ac9ddb and < 30f7bb922cb7e7f072a56c7cb7a5efccd2ceca1d≥ dac5e6249159ac255dad9781793dbe5908ac9ddb and < b06a4a397ac826603f39875cb7c7819a41365196≥ 63567ecd99a24495208dc860d50fb17440043006 and < 4e22e8b505f877573bbdfdbcb680babad9b2f7a1≥ 1f912f8484e9c4396378c39460bbea0af681f319 and < f53bdab85e64eb57d6899a30d1307fd5a3639cc7≥ 6d7d458c41b98a5c1670cbd36f2923c37de51cf5 and < eb1c26eab4d1f0b4450439b4b88c3e73faf1da98≥ 0622846db728a5332b917c797c733e202c4620ae and < 8e1c7257c81577130f5ce90f69b2a2c3ce63f957	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.8	CVSS 3.1	High	1.8	5.9	416baaa9-dc9f-4396-8d5f-8c081fb06d67 via NIST National Vulnerability Database
7.8	CVSS 3.1	High	—	—	Linux via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: 416baaa9-dc9f-4396-8d5f-8c081fb06d67)

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 7.8
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Aug 15, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

git.kernel.org/stable/c/7b2c3eabc4dafc062a25e10711154f2107526a78
NIST National Vulnerability Database
git.kernel.org/stable/c/b06a4a397ac826603f39875cb7c7819a41365196
NIST National Vulnerability Database
git.kernel.org/stable/c/8357255e56dc1aaa437e3c53ee9385de984e0d57
NIST National Vulnerability Database
git.kernel.org/stable/c/30f7bb922cb7e7f072a56c7cb7a5efccd2ceca1d
NIST National Vulnerability Database
git.kernel.org/stable/c/4e22e8b505f877573bbdfdbcb680babad9b2f7a1
NIST National Vulnerability Database
git.kernel.org/stable/c/f53bdab85e64eb57d6899a30d1307fd5a3639cc7
NIST National Vulnerability Database
git.kernel.org/stable/c/eb1c26eab4d1f0b4450439b4b88c3e73faf1da98
NIST National Vulnerability Database
git.kernel.org/stable/c/8e1c7257c81577130f5ce90f69b2a2c3ce63f957
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 13h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 13h
Unknown CVE-2026-98431 RDMA/uverbs: Fix mmap_lock/disassociation_lock circular dependency 1d
Unknown CVE-2026-98430 RDMA/efa: Keep admin queues alive while IRQ is registered 1d
Unknown CVE-2026-98429 RDMA/efa: Keep EQ resources alive while IRQ is registered 1d
Unknown CVE-2026-98428 ALSA: usb: 6fire: Avoid embedded URBs 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No FIRST EPSS score.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-72120 is "can: bcm: add missing rcu list annotations and operations", rated High. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.8 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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