CVE-2023-52804

In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Add validity check for db_maxag and db_agpref Both db_maxag and db_agpref are used as the index of the db_agfree array, but there is currently no validity check for db_maxag and db_agpref, which can lead to errors. The following is related bug reported by Syzbot: UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:639:20 index 7936 is out of range for type 'atomic_t[128]' Add checking that the values of db_maxag and db_agpref are valid indexes for the db_agfree array.

• linux linux kernel (< 4.14.331) • linux linux kernel (>= 4.15 < 4.19.300) • linux linux kernel (>= 4.20 < 5.4.262) • linux linux kernel (>= 5.5 < 5.10.202) • linux linux kernel (>= 5.11 < 5.15.140) • linux linux kernel (>= 5.16 < 6.1.64) • linux linux kernel (>= 6.2 < 6.5.13) • linux linux kernel (>= 6.6 < 6.6.3)