416baaa9-dc9f-4396-8d5f-8c081fb06d67NVD:CVE-2023-52810CVE-2023-52810
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
13.0%
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
git.kernel.org/stable/c/0cb567e727339a192f9fd0db00781d73a91d15a6
git.kernel.org/stable/c/1a7c53fdea1d189087544d9a606d249e93c4934b
git.kernel.org/stable/c/491085258185ffc4fb91555b0dba895fe7656a45
git.kernel.org/stable/c/524b4f203afcf87accfe387e846f33f916f0c907
git.kernel.org/stable/c/525b861a008143048535011f3816d407940f4bfa
git.kernel.org/stable/c/5f148b16972e5f4592629b244d5109b15135f53f
git.kernel.org/stable/c/8f2964df6bfce9d92d81ca552010b8677af8d9dc
git.kernel.org/stable/c/a81a56b4cbe3142cc99f6b98e8f9b3a631c768e1
git.kernel.org/stable/c/cc61fcf7d1c99f148fe8ddfb5c6ed0bb75861f01
Related
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
13.0%