Description
In the Linux kernel, the following vulnerability has been resolved: can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled This issue is similar to the vulnerability in the `mcp251x` driver, which was fixed in commit 03c427147b2d ("can: mcp251x: fix resume from sleep before interface was brought up"). In the `hi311x` driver, when the device resumes from sleep, the driver schedules `priv->restart_work`. However, if the network interface was not previously enabled, the `priv->wq` (workqueue) is not allocated and initialized, leading to a null pointer dereference. To fix this, we move the allocation and initialization of the workqueue from the `hi3110_open` function to the `hi3110_can_probe` function. This ensures that the workqueue is properly initialized before it is used during device resume. And added logic to destroy the workqueue in the error handling paths of `hi3110_can_probe` and in the `hi3110_can_remove` function to prevent resource leaks.
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before d1fc4c041459e2d4856c1b2501486ba4f0cbf96b
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before e93af787187e585933570563c643337fa731584a
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 1d2ef21f02baff0c109ad78b9e835fb4acb14533
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before fd00cf38fd437c979f0e5905e3ebdfc3f55a4b96
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 6b696808472197b77b888f50bc789a3bae077743
6.1.156 (semver)
6.6.111 (semver)
6.12.52 (semver)
6.16.12 (semver)
6.17 (original_commit_for_fix)
References
git.kernel.org/...c/d1fc4c041459e2d4856c1b2501486ba4f0cbf96b
git.kernel.org/...c/e93af787187e585933570563c643337fa731584a
git.kernel.org/...c/1d2ef21f02baff0c109ad78b9e835fb4acb14533
git.kernel.org/...c/fd00cf38fd437c979f0e5905e3ebdfc3f55a4b96
git.kernel.org/...c/6b696808472197b77b888f50bc789a3bae077743
