CVE-2022-49029

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab < f2a13196ad41c6c2ab058279dffe6c97292e753aaffected
LinuxLinux57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab < 798198273bf86673b970b51acdb35e57f42b3fcbaffected
LinuxLinux57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab < 24b9633f7db7f4809be7053df1d2e117e7c2de10affected
LinuxLinux57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab < 7b2b67fe1339389e0bf3c37c7a677a004ac0e4e3affected
LinuxLinux57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab < 90907cd4d11351ff76c9a447bcb5db0e264c47cdaffected
LinuxLinux57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab < 45f6e81863747c0d7bc6a95ec51129900e71467aaffected
LinuxLinux57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab < e65cfd1f9cd27d9c27ee5cb88128a9f79f25d863affected
LinuxLinux57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab < e2a87785aab0dac190ac89be6a9ba955e2c634f2affected
LinuxLinux2.6.24affected
LinuxLinux0 < 2.6.24unaffected
LinuxLinux4.9.335 <= 4.9.*unaffected
LinuxLinux4.14.301 <= 4.14.*unaffected
LinuxLinux4.19.268 <= 4.19.*unaffected
LinuxLinux5.4.226 <= 5.4.*unaffected
LinuxLinux5.10.158 <= 5.10.*unaffected
LinuxLinux5.15.82 <= 5.15.*unaffected
LinuxLinux6.0.12 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References