A flaw was found in the JFS filesystem code in the Linux Kernel which
allows a local attacker with the ability to set extended attributes to
panic the system, causing memory corruption or escalating privileges. The
highest threat from this vulnerability is to confidentiality, integrity, as
well as system availability.

It was discovered that the jfs file system implementation in the Linux
kernel contained an out-of-bounds read vulnerability. A local attacker
could use this to possibly cause a denial of service (system crash).