An issue was discovered in the XFS filesystem in fs/xfs/xfs_icache.c in the Linux kernel. There is a NULL pointer dereference leading to a system panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occurs because of a lack of proper validation that cached inodes are free during an allocation.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | kernel | 2018-08-04 23:47 | ALAS-2018-1048 |
Amazon Linux 2 - Core | kernel | 2018-08-04 23:49 | ALAS2-2018-1050 |
Amazon Linux 2 - Core | kernel | 2018-08-04 23:49 | ALAS2-2018-1051 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 5.0 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
NVD | CVSSv2 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
NVD | CVSSv3 | 5.5 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |