Description

An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.

References

http://www.securityfocus.com/bid/104917

https://bugzilla.kernel.org/show_bug.cgi?id=200297

https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html

https://usn.ubuntu.com/3821-1/

https://usn.ubuntu.com/3821-2/

https://usn.ubuntu.com/4094-1/

https://usn.ubuntu.com/4118-1/

https://www.debian.org/security/2018/dsa-4308

https://www.spinics.net/lists/linux-fsdevel/msg130021.html

Details

Risk Information

CVSS v2

CVSS v3