Detections
Analytics
CVE-2023-52810
high
Description
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
References
https://git.kernel.org/stable/c/cc61fcf7d1c99f148fe8ddfb5c6ed0bb75861f01
https://git.kernel.org/stable/c/a81a56b4cbe3142cc99f6b98e8f9b3a631c768e1
https://git.kernel.org/stable/c/8f2964df6bfce9d92d81ca552010b8677af8d9dc
https://git.kernel.org/stable/c/5f148b16972e5f4592629b244d5109b15135f53f
https://git.kernel.org/stable/c/525b861a008143048535011f3816d407940f4bfa
https://git.kernel.org/stable/c/524b4f203afcf87accfe387e846f33f916f0c907
https://git.kernel.org/stable/c/491085258185ffc4fb91555b0dba895fe7656a45
https://git.kernel.org/stable/c/1a7c53fdea1d189087544d9a606d249e93c4934b
https://git.kernel.org/stable/c/0cb567e727339a192f9fd0db00781d73a91d15a6