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CVE-2023-52804

fs/jfs: Add validity check for db_maxag and db_agpref PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a0649e2dd4a3595b5595a29d0064d047c2fae2fb; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ce15b0f1a431168f07b1cc6c9f71206a2db5c809; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 32bd8f1cbcf8b663e29dd1f908ba3a129541a11b; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c6c8863fb3f57700ab583d875adda04caaf2278a; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1f74d336990f37703a8eee77153463d65b67f70e; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 5013f8269887642cca784adc8db9b5f0b771533f; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before dca403bb035a565bb98ecc1dda5d30f676feda40; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2323de34a3ae61a9f9b544c18583f71cea86721f; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 64933ab7b04881c6c18b21ff206c12278341c72e
Linux / Linuxaffected 2.6.12; unaffected 0 before 2.6.12; unaffected 4.14.331 through 4.14.*; unaffected 4.19.300 through 4.19.*; unaffected 5.4.262 through 5.4.*; unaffected 5.10.202 through 5.10.*; unaffected 5.15.140 through 5.15.*; unaffected 6.1.64 through 6.1.*; unaffected 6.5.13 through 6.5.*; unaffected 6.6.3 through 6.6.*; unaffected 6.7 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.