CVE-2024-56656
9.8 · CRITICALOverview
CVE-2024-56656 is a critical-severity vulnerability affecting linux linux_kernel. It was published on December 27, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Fix aggregation ID mask to prevent oops on 5760X chips
The 5760X (P7) chip's HW GRO/LRO interface is very similar to that of
the previous generation (5750X or P5). However, the aggregation ID
fields in the completion structures on P7 have been redefined from
16 bits to 12 bits. The freed up 4 bits are redefined for part of the
metadata such as the VLAN ID. The aggregation ID mask was not modified
when adding support for P7 chips. Including the extra 4 bits for the
aggregation ID can potentially cause the driver to store or fetch the
packet header of GRO/LRO packets in the wrong TPA buffer. It may hit
the BUG() condition in __skb_pull() because the SKB contains no valid
packet header:
kernel BUG at include/linux/skbuff.h:2766!
Oops: invalid opcode: 0000 1 PREEMPT SMP NOPTI
CPU: 4 UID: 0 PID: 0 Comm: swapper/4 Kdump: loaded Tainted: G OE 6.12.0-rc2+ #7
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED
Remediation
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linux | linux_kernel | >= 6.8, < 6.12.6 | Affected |
Frequently Asked Questions
What is CVE-2024-56656?
CVE-2024-56656 is a critical-severity vulnerability affecting linux linux_kernel. It was published on December 27, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2024-56656?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2024-56656?
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2024-56656?
CyberStrike's AI-powered security agents can automatically detect CVE-2024-56656 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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