CVE-2022-50355

Summary

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

staging: vt6655: fix some erroneous memory clean-up loops

In some initialization functions of this driver, memory is allocated with 'i' acting as an index variable and increasing from 0. The commit in "Fixes" introduces some clean-up codes in case of allocation failure, which free memory in reverse order with 'i' decreasing to 0. However, there are some problems:

  • The case i=0 is left out. Thus memory is leaked.
  • In case memory allocation fails right from the start, the memory freeing loops will start with i=-1 and invalid memory locations will be accessed.

One of these loops has been fixed in commit c8ff91535880 ("staging: vt6655: fix potential memory leak"). Fix the remaining erroneous loops.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5341ee0adb17d12a96dc5344e0d267cd12b52135 < 637672a71f5016a40b0a6c0f3c8ad25eacedc8c3affected
LinuxLinux5341ee0adb17d12a96dc5344e0d267cd12b52135 < 88b9cc60f26e8a05d1ddbddf91b09ca2915f20e0affected
LinuxLinux5341ee0adb17d12a96dc5344e0d267cd12b52135 < 95ac62e8545be2b0a8cae0beef7c682e2e470e48affected
LinuxLinux5341ee0adb17d12a96dc5344e0d267cd12b52135 < f19e5b7df54590c831f350381963f25585c8f7d5affected
LinuxLinux5341ee0adb17d12a96dc5344e0d267cd12b52135 < a9e9806d1c315bc50dce05479a079b9a104474b8affected
LinuxLinux5341ee0adb17d12a96dc5344e0d267cd12b52135 < ed11b73c963292e7b49c0f37025c58ed3b7921d6affected
LinuxLinux5341ee0adb17d12a96dc5344e0d267cd12b52135 < 2a2db520e3ca5aafba7c211abfd397666c9b5f9daffected
LinuxLinux4.18affected
LinuxLinux0 < 4.18unaffected
LinuxLinux4.19.262 <= 4.19.*unaffected
LinuxLinux5.4.220 <= 5.4.*unaffected
LinuxLinux5.10.150 <= 5.10.*unaffected
LinuxLinux5.15.75 <= 5.15.*unaffected
LinuxLinux5.19.17 <= 5.19.*unaffected
LinuxLinux6.0.3 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References