CVE-2022-49029: hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails
First published: Mon Oct 21 2024(Updated: )
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().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | >=2.6.24<4.9.335 | |
| Linux kernel | >=4.10<4.14.301 | |
| Linux kernel | >=4.15<4.19.268 | |
| Linux kernel | >=4.20<5.4.226 | |
| Linux kernel | >=5.5<5.10.158 | |
| Linux kernel | >=5.11<5.15.82 | |
| Linux kernel | >=5.16<6.0.12 | |
| Linux kernel | =6.1-rc1 | |
| Linux kernel | =6.1-rc2 | |
| Linux kernel | =6.1-rc3 | |
| Linux kernel | =6.1-rc4 | |
| Linux kernel | =6.1-rc5 | |
| Linux kernel | =6.1-rc6 | |
| Linux kernel | =6.1-rc7 |
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Reference Links
- 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
Frequently Asked Questions
What is the severity of CVE-2022-49029?
CVE-2022-49029 has been classified with a severity level dependent on the specific Linux kernel version in use.
How do I fix CVE-2022-49029?
To address CVE-2022-49029, users should upgrade to a patched version of the Linux kernel that resolves the vulnerability.
Which Linux kernel versions are affected by CVE-2022-49029?
CVE-2022-49029 affects multiple versions of the Linux kernel, specifically from 2.6.24 up to the latest 6.1 release candidates.
Is CVE-2022-49029 a remote exploit?
CVE-2022-49029 can potentially be exploited locally by an attacker with the appropriate privileges.
What component of the Linux kernel does CVE-2022-49029 affect?
CVE-2022-49029 specifically affects the hwmon subsystem related to ibmpex.
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