PT-2019-4483 · Linux+5 · Linux Kernel+5
Published
2019-06-21
·
Updated
2026-03-14
·
CVE-2019-19449
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel version 5.0.21
Description
The issue is related to a buffer overflow read in the Linux kernel, specifically in the functions
f2fs build segment manager and init min max mtime in fs/f2fs/segment.c. This can be exploited by mounting a crafted f2fs filesystem image, potentially allowing a remote attacker to impact the confidentiality, integrity, and availability of protected information. The vulnerability is due to the lack of validation of the second argument to the get seg entry function.Recommendations
For Linux kernel version 5.0.21, consider disabling the
f2fs build segment manager function or restricting the mounting of f2fs filesystem images until a patch is available. Avoid using the init min max mtime function in the affected kernel version to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Exploit
Out of bounds Read
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Ubuntu