CVE-2023-52810

HIGH
Published May 21, 2024 Modified Apr 2, 2025 CWE-1335

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

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CVSS v3.1 Score

8.4
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-1335 CWE-1335

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/0cb567e727339a192f9fd0db00781d73a91d15a6 https://git.kernel.org/stable/c/1a7c53fdea1d189087544d9a606d249e93c4934b https://git.kernel.org/stable/c/491085258185ffc4fb91555b0dba895fe7656a45 https://git.kernel.org/stable/c/524b4f203afcf87accfe387e846f33f916f0c907 https://git.kernel.org/stable/c/525b861a008143048535011f3816d407940f4bfa https://git.kernel.org/stable/c/5f148b16972e5f4592629b244d5109b15135f53f https://git.kernel.org/stable/c/8f2964df6bfce9d92d81ca552010b8677af8d9dc https://git.kernel.org/stable/c/a81a56b4cbe3142cc99f6b98e8f9b3a631c768e1 https://git.kernel.org/stable/c/cc61fcf7d1c99f148fe8ddfb5c6ed0bb75861f01 https://git.kernel.org/stable/c/0cb567e727339a192f9fd0db00781d73a91d15a6 https://git.kernel.org/stable/c/1a7c53fdea1d189087544d9a606d249e93c4934b https://git.kernel.org/stable/c/491085258185ffc4fb91555b0dba895fe7656a45 https://git.kernel.org/stable/c/524b4f203afcf87accfe387e846f33f916f0c907 https://git.kernel.org/stable/c/525b861a008143048535011f3816d407940f4bfa https://git.kernel.org/stable/c/5f148b16972e5f4592629b244d5109b15135f53f https://git.kernel.org/stable/c/8f2964df6bfce9d92d81ca552010b8677af8d9dc https://git.kernel.org/stable/c/a81a56b4cbe3142cc99f6b98e8f9b3a631c768e1 https://git.kernel.org/stable/c/cc61fcf7d1c99f148fe8ddfb5c6ed0bb75861f01

Frequently Asked Questions

What is CVE-2023-52810? +
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 It has a CVSS v3.1 base score of 8.4 (HIGH).
How severe is CVE-2023-52810? +
CVE-2023-52810 has a CVSS v3.1 score of 8.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2023-52810? +
CVE-2023-52810 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-52810? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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