CVE-2022-50887

Summary

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

regulator: core: fix unbalanced of node refcount in regulator_dev_lookup()

I got the the following report:

OF: ERROR: memory leak, expected refcount 1 instead of 2, of_node_get()/of_node_put() unbalanced - destroy cset entry: attach overlay node /i2c/pmic@62/regulators/exten

In of_get_regulator(), the node is returned from of_parse_phandle() with refcount incremented, after using it, of_node_put() need be called.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux69511a452e6dc6b74fe4f3671a51b1b44b9c57e3 < 0e88505ac0a6ae97746bcdbd4b042ee9f20455aeaffected
LinuxLinux69511a452e6dc6b74fe4f3671a51b1b44b9c57e3 < 4dfcf5087db9a34a300d6b99009232d4537c3e6aaffected
LinuxLinux69511a452e6dc6b74fe4f3671a51b1b44b9c57e3 < 3ac888db0f67813d91373a9a61c840f815cd4ec9affected
LinuxLinux69511a452e6dc6b74fe4f3671a51b1b44b9c57e3 < d39937f8de641c44a337cec4a2e5d3e8add20a7daffected
LinuxLinux69511a452e6dc6b74fe4f3671a51b1b44b9c57e3 < f48c474efe05cf9ce5e535b5e0ddd710e963936caffected
LinuxLinux69511a452e6dc6b74fe4f3671a51b1b44b9c57e3 < cda1895f3b7f324ece1614308a815a3994983b97affected
LinuxLinux69511a452e6dc6b74fe4f3671a51b1b44b9c57e3 < 2b93c58adddd98812ad928bbc2063038f3df1ffdaffected
LinuxLinux69511a452e6dc6b74fe4f3671a51b1b44b9c57e3 < 2f98469c3141f8e42ba11075a273fb795bbad57faffected
LinuxLinux69511a452e6dc6b74fe4f3671a51b1b44b9c57e3 < f2b41b748c19962b82709d9f23c6b2b0ce9d2f91affected
LinuxLinux3.3affected
LinuxLinux0 < 3.3unaffected
LinuxLinux4.9.337 <= 4.9.*unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References