CVE-2023-53075

ftrace: Fix invalid address access in lookup_rec() when index is 0

State: Published
Severity: Not scored
Published: May 2, 2025
Updated: May 11, 2026
Reserved: May 2, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

ftrace: Fix invalid address access in lookup_rec() when index is 0

KASAN reported follow problem:

BUG: KASAN: use-after-free in lookup_rec Read of size 8 at addr ffff000199270ff0 by task modprobe CPU: 2 Comm: modprobe Call trace: kasan_report __asan_load8 lookup_rec ftrace_location arch_check_ftrace_location check_kprobe_address_safe register_kprobe

When checking pg->records[pg->index - 1].ip in lookup_rec(), it can get a pg which is newly added to ftrace_pages_start in ftrace_process_locs(). Before the first pg->index++, index is 0 and accessing pg->records[-1].ip will cause this problem.

Don't check the ip when pg->index is 0.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9644302e3315e7e36495d230d5ac7125a316d33e to before 2de28e5ce34b22b73b833a21e2c45ae3aade3964Affected 9644302e3315e7e36495d230d5ac7125a316d33e to before 7569ee04b0e3b32df79f64db3a7138573edad9bcAffected 9644302e3315e7e36495d230d5ac7125a316d33e to before ac58b88ccbbb8e9fb83e137cee04a856b1ea6635Affected 9644302e3315e7e36495d230d5ac7125a316d33e to before 83c3b2f4e7c61367c7b24551f4c6eb94bbdda283Affected 9644302e3315e7e36495d230d5ac7125a316d33e to before 2a0d71fabfeb349216d33f001a6421b1768bd3a9Affected 9644302e3315e7e36495d230d5ac7125a316d33e to before 4f84f31f63416b0f02fc146ffdc4ab32723eb7e8Affected 9644302e3315e7e36495d230d5ac7125a316d33e to before f1bd8b7fd890d87d0dc4dedc6287ea34dd07c0b4Affected 9644302e3315e7e36495d230d5ac7125a316d33e to before ee92fa443358f4fc0017c1d0d325c27b37802504Affected
LinuxLinux	3.5Affected before 3.5Not affected 4.14.311 through 4.14.Not affected 4.19.279 through 4.19.Not affected 5.4.238 through 5.4.Not affected 5.10.176 through 5.10.Not affected 5.15.104 through 5.15.Not affected 6.1.21 through 6.1.Not affected 6.2.8 through 6.2.*Not affected 6.3 and laterNot affected

Product

Versions

LinuxLinux

9644302e3315e7e36495d230d5ac7125a316d33e to before 2de28e5ce34b22b73b833a21e2c45ae3aade3964Affected
9644302e3315e7e36495d230d5ac7125a316d33e to before 7569ee04b0e3b32df79f64db3a7138573edad9bcAffected
9644302e3315e7e36495d230d5ac7125a316d33e to before ac58b88ccbbb8e9fb83e137cee04a856b1ea6635Affected
9644302e3315e7e36495d230d5ac7125a316d33e to before 83c3b2f4e7c61367c7b24551f4c6eb94bbdda283Affected
9644302e3315e7e36495d230d5ac7125a316d33e to before 2a0d71fabfeb349216d33f001a6421b1768bd3a9Affected
9644302e3315e7e36495d230d5ac7125a316d33e to before 4f84f31f63416b0f02fc146ffdc4ab32723eb7e8Affected
9644302e3315e7e36495d230d5ac7125a316d33e to before f1bd8b7fd890d87d0dc4dedc6287ea34dd07c0b4Affected
9644302e3315e7e36495d230d5ac7125a316d33e to before ee92fa443358f4fc0017c1d0d325c27b37802504Affected

LinuxLinux

3.5Affected
before 3.5Not affected
4.14.311 through 4.14.*Not affected
4.19.279 through 4.19.*Not affected
5.4.238 through 5.4.*Not affected
5.10.176 through 5.10.*Not affected
5.15.104 through 5.15.*Not affected
6.1.21 through 6.1.*Not affected
6.2.8 through 6.2.*Not affected
6.3 and laterNot affected

References

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