In the Linux kernel, the following vulnerability has been resolved: qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure adapter->dcb would get silently freed inside qlcnic_dcb_enable() in case qlcnic_dcb_attach() would return an error, which always happens under OOM conditions. This would lead to use-after-free because both of the existing callers invoke qlcnic_dcb_get_info() on the obtained pointer, which is potentially freed at that point. Propagate errors from qlcnic_dcb_enable(), and instead free the dcb pointer at callsite using qlcnic_dcb_free(). This also removes the now unused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around kfree() also causing memory leaks for partially initialized dcb. Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/13a7c8964afcd8ca43c0b6001ebb0127baa95362 cve-icon cve-icon
https://git.kernel.org/stable/c/36999236f0b12d5de21a6f40e93b570727b9ceb2 cve-icon cve-icon
https://git.kernel.org/stable/c/513787ff9a331b461115e8a145a983d650a84fcb cve-icon cve-icon
https://git.kernel.org/stable/c/8df1dc04ce0e4c03b51a756749c250a9cb17d707 cve-icon cve-icon
https://git.kernel.org/stable/c/8f97eeb02a553cdc78c83a0596448a370e1518c4 cve-icon cve-icon
https://git.kernel.org/stable/c/95df720e64a6409d8152827a776c43f615e3321a cve-icon cve-icon
https://git.kernel.org/stable/c/a2a694e6edbdb3efb34e1613a31fdcf6cf444a55 cve-icon cve-icon
https://git.kernel.org/stable/c/d12a7510293d3370b234b0b7c5eda33e58786768 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025091508-CVE-2022-50288-3421@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50288 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50288 cve-icon
History

Wed, 17 Sep 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Tue, 16 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important

Mon, 15 Sep 2025 14:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure adapter->dcb would get silently freed inside qlcnic_dcb_enable() in case qlcnic_dcb_attach() would return an error, which always happens under OOM conditions. This would lead to use-after-free because both of the existing callers invoke qlcnic_dcb_get_info() on the obtained pointer, which is potentially freed at that point. Propagate errors from qlcnic_dcb_enable(), and instead free the dcb pointer at callsite using qlcnic_dcb_free(). This also removes the now unused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around kfree() also causing memory leaks for partially initialized dcb. Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
Title qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-15T14:21:24.427Z

Updated: 2025-09-15T14:21:24.427Z

Reserved: 2025-09-15T13:58:00.977Z

Link: CVE-2022-50288

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-15T15:15:40.020

Modified: 2025-09-15T15:22:27.090

Link: CVE-2022-50288

cve-icon Redhat

Severity : Important

Publid Date: 2025-09-15T00:00:00Z

Links: CVE-2022-50288 - Bugzilla