CVE-2024-58034

memory: tegra20-emc: fix an OF node reference bug in tegra_emc_find_node_by_ram_code()

State: Published
Severity: 7.8 High
Published: Feb 27, 2025
Updated: Aug 5, 2026
Reserved: Feb 27, 2025

Description

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

memory: tegra20-emc: fix an OF node reference bug in tegra_emc_find_node_by_ram_code()

As of_find_node_by_name() release the reference of the argument device node, tegra_emc_find_node_by_ram_code() releases some device nodes while still in use, resulting in possible UAFs. According to the bindings and the in-tree DTS files, the "emc-tables" node is always device's child node with the property "nvidia,use-ram-code", and the "lpddr2" node is a child of the "emc-tables" node. Thus utilize the for_each_child_of_node() macro and of_get_child_by_name() instead of of_find_node_by_name() to simplify the code.

This bug was found by an experimental verification tool that I am developing.

[krzysztof: applied v1, adjust the commit msg to incorporate v2 parts]

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	96e5da7c842424bcf64afe1082b960b42b96190b to before c3def10c610ae046aaa61d00528e7bd15e4ad8d3Affected 96e5da7c842424bcf64afe1082b960b42b96190b to before e9d07e91de140679eeaf275f47ad154467cb9e05Affected 96e5da7c842424bcf64afe1082b960b42b96190b to before c144423cb07e4e227a8572d5742ca2b36ada770dAffected 96e5da7c842424bcf64afe1082b960b42b96190b to before 3b02273446e23961d910b50cc12528faec649fb2Affected 96e5da7c842424bcf64afe1082b960b42b96190b to before 755e44538c190c31de9090d8e8821d228fcfd416Affected 96e5da7c842424bcf64afe1082b960b42b96190b to before b9784e5cde1f9fb83661a70e580e381ae1264d12Affected
LinuxLinux	5.0Affected before 5.0Not affected 5.15.179 through 5.15.Not affected 6.1.129 through 6.1.Not affected 6.6.76 through 6.6.Not affected 6.12.13 through 6.12.Not affected 6.13.2 through 6.13.*Not affected 6.14 and laterNot affected

Product

Versions

LinuxLinux

96e5da7c842424bcf64afe1082b960b42b96190b to before c3def10c610ae046aaa61d00528e7bd15e4ad8d3Affected
96e5da7c842424bcf64afe1082b960b42b96190b to before e9d07e91de140679eeaf275f47ad154467cb9e05Affected
96e5da7c842424bcf64afe1082b960b42b96190b to before c144423cb07e4e227a8572d5742ca2b36ada770dAffected
96e5da7c842424bcf64afe1082b960b42b96190b to before 3b02273446e23961d910b50cc12528faec649fb2Affected
96e5da7c842424bcf64afe1082b960b42b96190b to before 755e44538c190c31de9090d8e8821d228fcfd416Affected
96e5da7c842424bcf64afe1082b960b42b96190b to before b9784e5cde1f9fb83661a70e580e381ae1264d12Affected

LinuxLinux

5.0Affected
before 5.0Not affected
5.15.179 through 5.15.*Not affected
6.1.129 through 6.1.*Not affected
6.6.76 through 6.6.*Not affected
6.12.13 through 6.12.*Not affected
6.13.2 through 6.13.*Not affected
6.14 and laterNot affected

References

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