CVE-2024-44968
MediumIn the Linux kernel, the following vulnerability has been resolved: tick/broadcast: Move per CPU pointer access into the atomic section The recent fix for making the take over of the broadcast timer more reliable retrieves a per CPU pointer in preemptible context. This went unnoticed as compilers hoist the access into the non-preemptible region where the pointer is actually used. But of course it's valid that the compiler keeps it at the place where the code puts it which rightfully triggers: BUG: using smp_processor_id() in preemptible [00000000] code: caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0 Move it to the actual usage site which is in a non-preemptible region.
CVSS 3.1 score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected versions
Linux kernel versions
6.1.103,
6.6.44,
6.10.3
and later are affected. No fixed version recorded yet.
References
The following references provide additional information about CVE-2024-44968 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/541a900d245536d4809cb1aa322c3fcc2cdb58a6
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PatchKernel patch commithttps://git.kernel.org/stable/c/668c6c4a7e9e9f081c06b70f30104fb7013437ed
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PatchKernel patch commithttps://git.kernel.org/stable/c/6881e75237a84093d0986f56223db3724619f26e
Frequently asked questions
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What is CVE-2024-44968?
CVE-2024-44968 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.1.103 onward . CVE-2024-44968 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2024-44968?
CVE-2024-44968 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2024-44968?
No patch is currently available for CVE-2024-44968. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2024-44968 actively exploited?
No — CVE-2024-44968 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.