What’s Vulnerable › Vulnerabilities

CVE-2024-56749: dlm: fix dlm_recover_members refcount on error

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-12-29 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: dlm: fix dlm_recover_members refcount on error If dlm_recover_members() fails we don't drop the references of the previous created root_list that holds and keep all rsbs alive during the recovery. It might be not an unlikely event because ping_members() could run into an -EINTR if another recovery progress was triggered again.

Affected products

• Linux kernel: from 6.10 before 6.11.11; from 6.12 before 6.12.2 — fixed in 6.11.11, 6.12.2

How to fix

Upgrade to a fixed version: Linux kernel 6.11.11, 6.12.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/200b977ebbc313a59174ba971006a231b3533dc5
• https://git.kernel.org/stable/c/3230718a75a6c30ed60ac920c26be2119fa82b8e
• https://git.kernel.org/stable/c/fb2ec564887af1f365d754f7c306f1b5cd375b5e

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