CVE-2022-49029 Information

Description

In the Linux kernel the following vulnerability has been resolved:

hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails

Smatch report warning as follows:

drivers/hwmon/ibmpex.c:509 ibmpex_register_bmc() warn: ‘&data->list’ not removed from list

If ibmpex_find_sensors() fails in ibmpex_register_bmc() data will be freed but data->list will not be removed from driver_data.bmc_data then list traversal may cause UAF.

Fix by removeing it from driver_data.bmc_data before free().

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://git.kernel.org/stable/c/f2a13196ad41c6c2ab058279dffe6c97292e753a https://git.kernel.org/stable/c/798198273bf86673b970b51acdb35e57f42b3fcb https://git.kernel.org/stable/c/24b9633f7db7f4809be7053df1d2e117e7c2de10 https://git.kernel.org/stable/c/7b2b67fe1339389e0bf3c37c7a677a004ac0e4e3 https://git.kernel.org/stable/c/90907cd4d11351ff76c9a447bcb5db0e264c47cd https://git.kernel.org/stable/c/45f6e81863747c0d7bc6a95ec51129900e71467a https://git.kernel.org/stable/c/e65cfd1f9cd27d9c27ee5cb88128a9f79f25d863 https://git.kernel.org/stable/c/e2a87785aab0dac190ac89be6a9ba955e2c634f2

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8