CVE-2023-53222 — Out-of-bounds Read in Linux

CWE-125 — Out-of-bounds ReadCWE-190 — Integer Overflow or Wraparound5 documents5 sources
Severity
7.1HIGHNVD
EPSS
0.0%
top 95.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 15

Description

In the Linux kernel, the following vulnerability has been resolved: jfs: jfs_dmap: Validate db_l2nbperpage while mounting In jfs_dmap.c at line 381, BLKTODMAP is used to get a logical block number inside dbFree(). db_l2nbperpage, which is the log2 number of blocks per page, is passed as an argument to BLKTODMAP which uses it for shifting. Syzbot reported a shift out-of-bounds crash because db_l2nbperpage is too big. This happens because the large value is set without any validation in dbMount…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HExploitability: 1.8 | Impact: 5.2

Affected Packages4 packages

▶NVDlinux/linux_kernel4.15 — 4.19.291+6
▶Debianlinux/linux_kernel< 5.10.191-1+3
▶CVEListV5linux/linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 — 8c1efe3f74a7864461b0dff281c5562154b4aa8e+8
▶debiandebian/linux< linux 6.1.52-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
OSV
CVE-2023-53222: In the Linux kernel, the following vulnerability has been resolved: jfs: jfs_dmap: Validate db_l2nbperpage while mounting In jfs_dmap↗2025-09-15
▶
GHSA
GHSA-3277-7c79-2vxw: In the Linux kernel, the following vulnerability has been resolved: jfs: jfs_dmap: Validate db_l2nbperpage while mounting In jfs_dmap↗2025-09-15
▶

📋Vendor Advisories

2
Red Hat
kernel: jfs: jfs_dmap: Validate db_l2nbperpage while mounting↗2025-09-15
▶
Debian
CVE-2023-53222: linux - In the Linux kernel, the following vulnerability has been resolved: jfs: jfs_dm...↗2023
▶
CVE-2023-53222 — Out-of-bounds Read in Linux | cvebase