Memory Leak Affecting kernel-default-livepatch package, versions <5.14.21-150400.24.158.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-SLES154-KERNELDEFAULTLIVEPATCH-9531473
  • published27 Mar 2025
  • disclosed26 Mar 2025

Introduced: 26 Mar 2025

CVE-2022-49312  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 kernel-default-livepatch to version 5.14.21-150400.24.158.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-livepatch package and not the kernel-default-livepatch package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

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

staging: rtl8712: fix a potential memory leak in r871xu_drv_init()

In r871xu_drv_init(), if r8712_init_drv_sw() fails, then the memory allocated by r8712_alloc_io_queue() in r8712_usb_dvobj_init() is not properly released as there is no action will be performed by r8712_usb_dvobj_deinit(). To properly release it, we should call r8712_free_io_queue() in r8712_usb_dvobj_deinit().

Besides, in r871xu_dev_remove(), r8712_usb_dvobj_deinit() will be called by r871x_dev_unload() under condition padapter-&gt;bup and r8712_free_io_queue() is called by r8712_free_drv_sw(). However, r8712_usb_dvobj_deinit() does not rely on padapter-&gt;bup and calling r8712_free_io_queue() in r8712_free_drv_sw() is negative for better understading the code. So I move r8712_usb_dvobj_deinit() into r871xu_dev_remove(), and remove r8712_free_io_queue() from r8712_free_drv_sw().

CVSS Base Scores

version 3.1