Double Free Affecting kernel-coco_debug-devel package, versions <6.4.0-15061.12.coco15sp6.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.25% (16th percentile)

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  • Snyk IDSNYK-SLES156-KERNELCOCODEBUGDEVEL-8678034
  • published30 Jan 2025
  • disclosed29 Jan 2025

Introduced: 29 Jan 2025

CVE-2024-56708  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 kernel-coco_debug-devel to version 6.4.0-15061.12.coco15sp6.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-coco_debug-devel package and not the kernel-coco_debug-devel package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

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

EDAC/igen6: Avoid segmentation fault on module unload

The segmentation fault happens because:

During modprobe:

  1. In igen6_probe(), igen6_pvt will be allocated with kzalloc()
  2. In igen6_register_mci(), mci->pvt_info will point to &igen6_pvt->imc[mc]

During rmmod:

  1. In mci_release() in edac_mc.c, it will kfree(mci->pvt_info)
  2. In igen6_remove(), it will kfree(igen6_pvt);

Fix this issue by setting mci->pvt_info to NULL to avoid the double kfree.

CVSS Base Scores

version 3.1