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CVE-2024-47717

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: RISC-V: KVM: Don't zero-out PMU snapshot area before freeing data With the latest Linux-6.11-rc3, the below NULL pointer crash…

Published Oct 21, 2024CWE-476EPSS 0.22%

Overview

CVE-2024-47717 is a medium-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

RISC-V: KVM: Don't zero-out PMU snapshot area before freeing data

With the latest Linux-6.11-rc3, the below NULL pointer crash is observed

when SBI PMU snapshot is enabled for the guest and the guest is forcefully

powered-off.

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000508

Oops [#1]

Modules linked in: kvm

CPU: 0 UID: 0 PID: 61 Comm: term-poll Not tainted 6.11.0-rc3-00018-g44d7178dd77a #3

Hardware name: riscv-virtio,qemu (DT)

epc : __kvm_write_guest_page+0x94/0xa6 [kvm]

ra : __kvm_write_guest_page+0x54/0xa6 [kvm]

epc : ffffffff01590e98 ra : ffffffff01590e58 sp : ffff8f80001f39b0

gp : ffffffff81512a60 tp : ffffaf80024872c0 t0 : ffffaf800247e000

t1 : 00000000000007e0 t2 : 0000000000000000 s0 : ffff8f80001f39f0

s1 : 00007fff89ac4000 a0 : ffffffff015dd7e8 a1 : 0000000000000086

a2 : 0000000000000000 a3 : ffffaf8000000000 a4 : ffffaf80024882c0

a5 : 00000

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

Refgit.kernel.org/stable/c/47d40d93292d9cff8dabb735bed83d930fa03950Refgit.kernel.org/stable/c/6d0a5dcfc78bd18f2abb9641f83380135494559bRefgit.kernel.org/stable/c/81aa95fd5bd14ff49617f07fa79a8d1f1cf2ce9a

How CyberStrike helps

Frequently asked questions

What is CVE-2024-47717?

CVE-2024-47717 is a medium-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-47717?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-47717?

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.

How can CyberStrike help with CVE-2024-47717?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-47717 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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