What’s Vulnerable › Vulnerabilities

CVE-2022-49029: hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-10-21 · updated 2026-08-04
• Weakness: CWE-416

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().

Affected products

• Linux kernel: from 2.6.24 before 4.9.335; from 4.10 before 4.14.301; from 4.15 before 4.19.268; from 4.20 before 5.4.226; from 5.5 before 5.10.158; from 5.11 before 5.15.82 — fixed in 4.14.301, 4.19.268, 4.9.335, 5.10.158, 5.15.82, 5.4.226

How to fix

Upgrade to a fixed version: Linux kernel 4.14.301, 4.19.268, 4.9.335, 5.10.158. Check the vendor advisory for mitigations.

References

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

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