CVE-2026-72120: can: bcm: add missing rcu list annotations and operations
Vulnerability summary
CVE-2026-72120 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.2% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 17 · Related 17Timeline
- 15-08-2026PublishedVulnerability first disclosed.
- 16-10-2026Last modifiedVulnerability information updated.
Description
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().
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
Decrease -0.01 pp
From 0.18% on 06-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu157 products
- linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
- linux≥ 659701c0b954ccdb4a916a4ad59bbc16e726d42c, < 8357255e56dc1aaa437e3c53ee9385de984e0d57 | ≥ 0622846db728a5332b917c797c733e202c4620ae, < 8e1c7257c81577130f5ce90f69b2a2c3ce63f957 | ≥ 6d7d458c41b98a5c1670cbd36f2923c37de51cf5, < eb1c26eab4d1f0b4450439b4b88c3e73faf1da98 | ≥ 1f912f8484e9c4396378c39460bbea0af681f319, < f53bdab85e64eb57d6899a30d1307fd5a3639cc7 | ≥ 63567ecd99a24495208dc860d50fb17440043006, < 4e22e8b505f877573bbdfdbcb680babad9b2f7a1 | ≥ dac5e6249159ac255dad9781793dbe5908ac9ddb, < b06a4a397ac826603f39875cb7c7819a41365196 | ≥ dac5e6249159ac255dad9781793dbe5908ac9ddb, < 30f7bb922cb7e7f072a56c7cb7a5efccd2ceca1d | ≥ dac5e6249159ac255dad9781793dbe5908ac9ddb, < 7b2c3eabc4dafc062a25e10711154f2107526a78 | 19f553a1ddf260da6570ed8f8d91a8c87f49b63a | 7c9db92d5f0eadca30884af75c53d601edc512ee | ≥ 5.10.238, < 5.10.261 | ≥ 5.15.185, < 5.15.212 | ≥ 6.1.141, < 6.1.178 | ≥ 6.6.93, < 6.6.145 | ≥ 6.12.31, < 6.12.97 | ≥ 5.4.294, < 5.5 | ≥ 6.14.9, < 6.15 | 6.15
3 vendors · 159 products
