CVE-2024-26880

/// Technical description

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

dm: call the resume method on internal suspend

There is this reported crash when experimenting with the lvm2 testsuite.

The list corruption is caused by the fact that the postsuspend and resume

methods were not paired correctly; there were two consecutive calls to the

origin_postsuspend function. The second call attempts to remove the

"hash_list" entry from a list, while it was already removed by the first

call.

Fix __dm_internal_resume so that it calls the preresume and resume

methods of the table's targets.

If a preresume method of some target fails, we are in a tricky situation.

We can't return an error because dm_internal_resume isn't supposed to

return errors. We can't return success, because then the "resume" and

"postsuspend" methods would not be paired correctly. So, we set the

DMF_SUSPENDED flag and we fake normal suspend - it may confuse userspace

tools, but it won't cause a kernel crash.

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/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References