In the Linux kernel, the following vulnerability has been resolved:
can: bcm: add missing rcu read protection for procfs content
When the procfs content is generated for a bcm_op which is in the process to be removed the procfs output might show unreliable data (UAF).
As the removal of bcm_op's is already implemented with rcu handling this patch adds the missing rcu_read_lock() and makes sure the list entries are properly removed under rcu protection.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 4.19.252 | 4.20 |
| linux / linux_kernel | 5.4.205 | 5.4.294 |
| linux / linux_kernel | 5.10.130 | 5.10.238 |
| linux / linux_kernel | 5.15.54 | 5.15.185 |
| linux / linux_kernel | 5.18.11 | 5.19 |
| linux / linux_kernel | 5.19.1 | 6.1.141 |
| linux / linux_kernel | 6.2 | 6.6.93 |
| linux / linux_kernel | 6.7 | 6.12.31 |
| linux / linux_kernel | 6.13 | 6.14.9 |
| linux / linux_kernel | 5.19 | 5.19.x |
| linux / linux_kernel | 5.19-rc6 | 5.19-rc6.x |
| linux / linux_kernel | 5.19-rc7 | 5.19-rc7.x |
| linux / linux_kernel | 5.19-rc8 | 5.19-rc8.x |
| linux / linux_kernel | 6.15-rc1 | 6.15-rc1.x |
| linux / linux_kernel | 6.15-rc2 | 6.15-rc2.x |
| linux / linux_kernel | 6.15-rc3 | 6.15-rc3.x |
| linux / linux_kernel | 6.15-rc4 | 6.15-rc4.x |
| linux / linux_kernel | 6.15-rc5 | 6.15-rc5.x |
| linux / linux_kernel | 6.15-rc6 | 6.15-rc6.x |
| linux / linux_kernel | 6.15-rc7 | 6.15-rc7.x |
| debian / debian_linux | 11.0 | 11.0.x |