can: bcm: fix locking for bcm_op runtime updates
Summary
| CVE | CVE-2026-23362 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-25 11:16:35 UTC |
| Updated | 2026-04-18 09:16:21 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: can: bcm: fix locking for bcm_op runtime updates Commit c2aba69d0c36 ("can: bcm: add locking for bcm_op runtime updates") added a locking for some variables that can be modified at runtime when updating the sending bcm_op with a new TX_SETUP command in bcm_tx_setup(). Usually the RX_SETUP only handles and filters incoming traffic with one exception: When the RX_RTR_FRAME flag is set a predefined CAN frame is sent when a specific RTR frame is received. Therefore the rx bcm_op uses bcm_can_tx() which uses the bcm_tx_lock that was only initialized in bcm_tx_setup(). Add the missing spin_lock_init() when allocating the bcm_op in bcm_rx_setup() to handle the RTR case properly. |
Risk And Classification
EPSS: 0.000320000 probability, percentile 0.090980000 (date 2026-04-18)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 7595de7bc56e0e52b74e56c90f7e247bf626d628 0904037e713f787d1376e1d349c3bdf6c3105881 git | Not specified |
| CNA | Linux | Linux | affected fbd8fdc2b218e979cfe422b139b8f74c12419d1f c85b96eaf766d8f066b1139a17a51efa2f6627ef git | Not specified |
| CNA | Linux | Linux | affected 2a437b86ac5a9893c902f30ef66815bf13587bf6 800f26f11ae37b17f58e0001f28a47dd75c26557 git | Not specified |
| CNA | Linux | Linux | affected 76c84c3728178b2d38d5604e399dfe8b0752645e 70e951afad4c025261fe3c952d2b07237e320a01 git | Not specified |
| CNA | Linux | Linux | affected cc55dd28c20a6611e30596019b3b2f636819a4c0 8bcf2d847adb82b2c617456f6da17ac5e6c75285 git | Not specified |
| CNA | Linux | Linux | affected c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7 8215ba7bc99e84e66fd6938874ec4330a9d96518 git | Not specified |
| CNA | Linux | Linux | affected c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7 f0c349b2c21b220af5ba19f29b885e222958d796 git | Not specified |
| CNA | Linux | Linux | affected c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7 c35636e91e392e1540949bbc67932167cb48bc3a git | Not specified |
| CNA | Linux | Linux | affected 8f1c022541bf5a923c8d6fa483112c15250f30a4 git | Not specified |
| CNA | Linux | Linux | affected c4e8a172501e677ebd8ea9d9161d97dc4df56fbd git | Not specified |
| CNA | Linux | Linux | affected 6.15 | Not specified |
| CNA | Linux | Linux | unaffected 6.15 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.253 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.203 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.167 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.130 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.77 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.17 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.7 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/8215ba7bc99e84e66fd6938874ec4330a9d96518 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/70e951afad4c025261fe3c952d2b07237e320a01 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/800f26f11ae37b17f58e0001f28a47dd75c26557 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c35636e91e392e1540949bbc67932167cb48bc3a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0904037e713f787d1376e1d349c3bdf6c3105881 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f0c349b2c21b220af5ba19f29b885e222958d796 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c85b96eaf766d8f066b1139a17a51efa2f6627ef | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/8bcf2d847adb82b2c617456f6da17ac5e6c75285 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.