PT-2025-18839 · Linux+3 · Linux Kernel+3
Published
2023-03-09
·
Updated
2026-01-28
·
CVE-2023-53075
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A use-after-free issue was discovered in the Linux kernel, specifically in the ftrace subsystem. The problem occurs when the
lookup rec() function accesses an invalid address, which is reported by KASAN. This happens when checking pg->records[pg->index - 1].ip in lookup rec(), where pg is a newly added page to ftrace pages start in ftrace process locs(). Before the first pg->index++, the index is 0, and accessing pg->records[-1].ip causes the issue. The fix involves not checking the ip when pg->index is 0.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Red Os
Suse