CVE-2023-52810

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Add check for negative db_l2nbperpage l2nbperpage is log2(number of blks per page), and the minimum legal value should be 0, not negative. In the case of l2nbperpage being negative, an error will occur when subsequently used as shift exponent. Syzbot reported this bug: UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:799:12 shift exponent -16777216 is negative

Affected product and versions

Product

Linux Linux, linux_kernel, linux kernel

Affected versions

>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cc61fcf7d1c99f148fe8ddfb5c6ed0bb75861f01, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8f2964df6bfce9d92d81ca552010b8677af8d9dc, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a81a56b4cbe3142cc99f6b98e8f9b3a631c768e1, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 524b4f203afcf87accfe387e846f33f916f0c907, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5f148b16972e5f4592629b244d5109b15135f53f, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0cb567e727339a192f9fd0db00781d73a91d15a6, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 491085258185ffc4fb91555b0dba895fe7656a45, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1a7c53fdea1d189087544d9a606d249e93c4934b, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 525b861a008143048535011f3816d407940f4bfa, >= 2.6.12, >= 1da177e4c3f4 < cc61fcf7d1c9, >= 1da177e4c3f4 < 8f2964df6bfc, >= 1da177e4c3f4 < a81a56b4cbe3, >= 1da177e4c3f4 < 524b4f203afc, >= 1da177e4c3f4 < 5f148b16972e, >= 1da177e4c3f4 < 0cb567e72733, >= 1da177e4c3f4 < 491085258185, >= 1da177e4c3f4 < 1a7c53fdea1d, >= 1da177e4c3f4 < 525b861a0081, < 4.14.331

Fixed versions

4.14.331, 4.19.300, 5.4.262, 5.10.202, 5.15.140, 6.1.64, 6.5.13, 6.6.3

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-1335