CVE-2022-49612

In the Linux kernel, the following vulnerability has been resolved: power: supply: core: Fix boundary conditions in interpolation The functions power_supply_temp2resist_simple and power_supply_ocv2cap_simple handle boundary conditions incorrectly. The change was introduced in a4585ba2050f460f749bbaf2b67bd56c41e30283 ("power: supply: core: Use library interpolation"). There are two issues: First, the lines "high = i - 1" and "high = i" in ocv2cap have the wrong order compared to temp2resist. As a consequence, ocv2cap sets high=-1 if ocv>table[0].ocv, which causes an out-of-bounds read. Second, the logic of temp2resist is also not correct. Consider the case table[] = {{20, 100}, {10, 80}, {0, 60}}. For temp=5, we expect a resistance of 70% by interpolation. However, temp2resist sets high=low=2 and returns 60.

The following products are affected by CVE-2022-49612 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-49612.

URL	Resource
https://git.kernel.org/stable/c/093d27bb6f2d1963f927ef59c9a2d37059175426
https://git.kernel.org/stable/c/a762cee5d933fe4e2e1b773d60fc74fb8248d8c4
https://lore.kernel.org/linux-cve-announce/2025022613-CVE-2022-49612-8875@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49612
https://www.cve.org/CVERecord?id=CVE-2022-49612