How severe is CVE-2024-56676?

CVE-2024-56676 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-56676 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-56676?

CVE-2024-56676 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-56676?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-56676 have an EU (EUVD) identifier?

Yes. CVE-2024-56676 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-53324.

When was CVE-2024-56676 published?

CVE-2024-56676 was published on 2024-12-28 and last updated on 2026-06-17.

CVE-2024-56676

CVE-2024-56676 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-909.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-53324
Weakness: CWE-909
Affected product: Linux Linux Kernel
Published: 2024-12-28
Last modified: 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: thermal: testing: Initialize some variables annoteded with _free() Variables annotated with __free() need to be initialized if the function can return before they get updated for the first time or the attempt to free the memory pointed to by them upon function return may crash the kernel. Fix this issue in some places in the thermal testing code.

Frequently asked questions

What is CVE-2024-56676?: In the Linux kernel, the following vulnerability has been resolved: thermal: testing: Initialize some variables annoteded with _free() Variables annotated with __free() need to be initialized if the function can return before they get updated for the first time or the attempt to free the memory pointed to by them upon function return may crash the kernel. Fix this issue in some places in the thermal testing code.
How severe is CVE-2024-56676?: CVE-2024-56676 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-56676 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-56676?: CVE-2024-56676 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-56676?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-56676 have an EU (EUVD) identifier?: Yes. CVE-2024-56676 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-53324.
When was CVE-2024-56676 published?: CVE-2024-56676 was published on 2024-12-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

More vulnerabilities in Linux Linux Kernel

CVE-2023-2163 — Critical (CVSS 10.0): Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe,…
CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-1421 — Critical (CVSS 10.0): Use-after-free vulnerability in the sctp_assoc_update function in net/sctp/associola.c in the Linux kernel before…
CVE-2014-2523 — Critical (CVSS 10.0): net/netfilter/nf_conntrack_proto_dccp.c in the Linux kernel through 3.13.6 uses a DCCP header pointer incorrectly,…
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2010-2521 — Critical (CVSS 10.0): Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR implementation in the NFS server in the Linux kernel before…

All CVEs affecting Linux Linux Kernel →

Other CWE-909 vulnerabilities

CVE-2022-22704 — Critical (CVSS 9.8): The zabbix-agent2 package before 5.4.9-r1 for Alpine Linux sometimes allows privilege escalation to root because the…
CVE-2024-8178 — High (CVSS 8.8): The ctl_write_buffer and ctl_read_buffer functions allocated memory to be returned to userspace, without initializing…
CVE-2021-29980 — High (CVSS 8.8): Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption and a…
CVE-2021-23994 — High (CVSS 8.8): A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound write. This…
CVE-2020-11741 — High (CVSS 8.8): An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (with active profiling) to obtain…
CVE-2024-9780 — High (CVSS 7.8): ITS dissector crash in Wireshark 4.4.0 allows denial of service via packet injection or crafted capture file

Browse all CWE-909 vulnerabilities →