Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7595de7bc56e0e52b74e56c90f7e247bf626d628 before 0904037e713f787d1376e1d349c3bdf6c3105881; affected fbd8fdc2b218e979cfe422b139b8f74c12419d1f before c85b96eaf766d8f066b1139a17a51efa2f6627ef; affected 2a437b86ac5a9893c902f30ef66815bf13587bf6 before 800f26f11ae37b17f58e0001f28a47dd75c26557; affected 76c84c3728178b2d38d5604e399dfe8b0752645e before 70e951afad4c025261fe3c952d2b07237e320a01; affected cc55dd28c20a6611e30596019b3b2f636819a4c0 before 8bcf2d847adb82b2c617456f6da17ac5e6c75285; affected c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7 before 8215ba7bc99e84e66fd6938874ec4330a9d96518; affected c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7 before f0c349b2c21b220af5ba19f29b885e222958d796; affected c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7 before c35636e91e392e1540949bbc67932167cb48bc3a; affected 8f1c022541bf5a923c8d6fa483112c15250f30a4; affected c4e8a172501e677ebd8ea9d9161d97dc4df56fbd; affected 5.10.238 before 5.10.253; affected 5.15.185 before 5.15.203; affected 6.1.141 before 6.1.167; affected 6.6.93 before 6.6.130; affected 6.12.31 before 6.12.77; affected 5.4.294 before 5.5; affected 6.14.9 before 6.15 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.167 through 6.1.*; unaffected 6.6.130 through 6.6.*; unaffected 6.12.77 through 6.12.*; unaffected 6.18.17 through 6.18.*; unaffected 6.19.7 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0904037e713f787d1376e1d349c3bdf6c3105881
- https://git.kernel.org/stable/c/c85b96eaf766d8f066b1139a17a51efa2f6627ef
- https://git.kernel.org/stable/c/800f26f11ae37b17f58e0001f28a47dd75c26557
- https://git.kernel.org/stable/c/70e951afad4c025261fe3c952d2b07237e320a01
- https://git.kernel.org/stable/c/8bcf2d847adb82b2c617456f6da17ac5e6c75285
- https://git.kernel.org/stable/c/8215ba7bc99e84e66fd6938874ec4330a9d96518
- https://git.kernel.org/stable/c/f0c349b2c21b220af5ba19f29b885e222958d796
- https://git.kernel.org/stable/c/c35636e91e392e1540949bbc67932167cb48bc3a