CVE-2021-3739: Null Pointer Dereference

First published: Thu Aug 26 2021(Updated: )

A NULL pointer dereference flaw was found in btrfs_rm_device function in fs/btrfs/volumes.c in Linux Kernel, where triggering the bug requires ‘CAP_SYS_ADMIN’. This could allow a local attacker to crash the system or leak kernel internal information. References: <a href="https://lore.kernel.org/linux-btrfs/CAFcO6XO5TC5sEo-C9JGC75JkNAzkOSSLA3a=bwQqXFFbRTZ7Gw@mail.gmail.com/T/#md4b850f33616b7364f86e6fed144abc925f3669c">https://lore.kernel.org/linux-btrfs/CAFcO6XO5TC5sEo-C9JGC75JkNAzkOSSLA3a=bwQqXFFbRTZ7Gw@mail.gmail.com/T/#md4b850f33616b7364f86e6fed144abc925f3669c</a> <a href="https://lore.kernel.org/linux-btrfs/20210806102415.304717-1-wqu@suse.com/T/#u">https://lore.kernel.org/linux-btrfs/20210806102415.304717-1-wqu@suse.com/T/#u</a>

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

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