In the Linux kernel, the following vulnerability has been resolved:
nilfs2: protect references to superblock parameters exposed in sysfs
The superblock buffers of nilfs2 can not only be overwritten at runtime
for modifications/repairs, but they are also regularly swapped, replaced
during resizing, and even abandoned when degrading to one side due to
backing device issues. So, accessing them requires mutual exclusion using
the reader/writer semaphore “nilfs->ns_sem”.
Some sysfs attribute show methods read this superblock buffer without the
necessary mutual exclusion, which can cause problems with pointer
dereferencing and memory access, so fix it.
git.kernel.org/stable/c/157c0d94b4c40887329418c70ef4edd1a8d6b4ed
git.kernel.org/stable/c/19cfeba0e4b8eda51484fcf8cf7d150418e1d880
git.kernel.org/stable/c/683408258917541bdb294cd717c210a04381931e
git.kernel.org/stable/c/8c6e43b3d5f109cf9c61bc188fcc8175404e924f
git.kernel.org/stable/c/962562d4c70c5cdeb4e955d63ff2017c4eca1aad
git.kernel.org/stable/c/b14e7260bb691d7f563f61da07d61e3c8b59a614
git.kernel.org/stable/c/b90beafac05931cbfcb6b1bd4f67c1923f47040e
git.kernel.org/stable/c/ba97ba173f9625d5f34a986088979eae8b80d38e