CVE-2022-50355

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

State: Published
Severity: 7.8 High
Published: Sep 17, 2025
Updated: Aug 5, 2026
Reserved: Sep 17, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

Product	Versions
LinuxLinux	5341ee0adb17d12a96dc5344e0d267cd12b52135 to before 637672a71f5016a40b0a6c0f3c8ad25eacedc8c3Affected 5341ee0adb17d12a96dc5344e0d267cd12b52135 to before 88b9cc60f26e8a05d1ddbddf91b09ca2915f20e0Affected 5341ee0adb17d12a96dc5344e0d267cd12b52135 to before 95ac62e8545be2b0a8cae0beef7c682e2e470e48Affected 5341ee0adb17d12a96dc5344e0d267cd12b52135 to before f19e5b7df54590c831f350381963f25585c8f7d5Affected 5341ee0adb17d12a96dc5344e0d267cd12b52135 to before a9e9806d1c315bc50dce05479a079b9a104474b8Affected 5341ee0adb17d12a96dc5344e0d267cd12b52135 to before ed11b73c963292e7b49c0f37025c58ed3b7921d6Affected 5341ee0adb17d12a96dc5344e0d267cd12b52135 to before 2a2db520e3ca5aafba7c211abfd397666c9b5f9dAffected
LinuxLinux	4.18Affected before 4.18Not affected 4.19.262 through 4.19.Not affected 5.4.220 through 5.4.Not affected 5.10.150 through 5.10.Not affected 5.15.75 through 5.15.Not affected 5.19.17 through 5.19.Not affected 6.0.3 through 6.0.Not affected 6.1 and laterNot affected

Product

Versions

LinuxLinux

5341ee0adb17d12a96dc5344e0d267cd12b52135 to before 637672a71f5016a40b0a6c0f3c8ad25eacedc8c3Affected
5341ee0adb17d12a96dc5344e0d267cd12b52135 to before 88b9cc60f26e8a05d1ddbddf91b09ca2915f20e0Affected
5341ee0adb17d12a96dc5344e0d267cd12b52135 to before 95ac62e8545be2b0a8cae0beef7c682e2e470e48Affected
5341ee0adb17d12a96dc5344e0d267cd12b52135 to before f19e5b7df54590c831f350381963f25585c8f7d5Affected
5341ee0adb17d12a96dc5344e0d267cd12b52135 to before a9e9806d1c315bc50dce05479a079b9a104474b8Affected
5341ee0adb17d12a96dc5344e0d267cd12b52135 to before ed11b73c963292e7b49c0f37025c58ed3b7921d6Affected
5341ee0adb17d12a96dc5344e0d267cd12b52135 to before 2a2db520e3ca5aafba7c211abfd397666c9b5f9dAffected

LinuxLinux

4.18Affected
before 4.18Not affected
4.19.262 through 4.19.*Not affected
5.4.220 through 5.4.*Not affected
5.10.150 through 5.10.*Not affected
5.15.75 through 5.15.*Not affected
5.19.17 through 5.19.*Not affected
6.0.3 through 6.0.*Not affected
6.1 and laterNot affected

References

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