Description
In the Linux kernel, the following vulnerability has been resolved: mmc: atmel-mci: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, it will lead two issues: 1. The memory that allocated in mmc_alloc_host() is leaked. 2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del(). So fix this by checking the return value and calling mmc_free_host() in the error path.
Product status
7d2be0749a59096a334c94dc48f43294193cb8ed (git) before 99a6cdfa2cf05028b52f6d8ee85ccc5f8b71b4a2
7d2be0749a59096a334c94dc48f43294193cb8ed (git) before 6bb26abb92f25e582a0976091a10b539fe3796db
7d2be0749a59096a334c94dc48f43294193cb8ed (git) before 00ac0f5f95920f003cd6ece53cdc759549b69118
7d2be0749a59096a334c94dc48f43294193cb8ed (git) before 1925472dec31ec061d57412b3a65a056ea24f340
7d2be0749a59096a334c94dc48f43294193cb8ed (git) before cc8bb436f3c842a86b9082d97933582120d180e2
7d2be0749a59096a334c94dc48f43294193cb8ed (git) before 85946ceb0fac20ab39cdb85333086daf0291a553
7d2be0749a59096a334c94dc48f43294193cb8ed (git) before 9e6e8c43726673ca2abcaac87640b9215fd72f4c
2.6.27
Any version before 2.6.27
4.19.270 (semver)
5.4.229 (semver)
5.10.163 (semver)
5.15.86 (semver)
6.0.16 (semver)
6.1.2 (semver)
6.2 (original_commit_for_fix)
References
git.kernel.org/...c/99a6cdfa2cf05028b52f6d8ee85ccc5f8b71b4a2
git.kernel.org/...c/6bb26abb92f25e582a0976091a10b539fe3796db
git.kernel.org/...c/00ac0f5f95920f003cd6ece53cdc759549b69118
git.kernel.org/...c/1925472dec31ec061d57412b3a65a056ea24f340
git.kernel.org/...c/cc8bb436f3c842a86b9082d97933582120d180e2
git.kernel.org/...c/85946ceb0fac20ab39cdb85333086daf0291a553
git.kernel.org/...c/9e6e8c43726673ca2abcaac87640b9215fd72f4c
