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CVE-2024-53209

Critical Vulnerability: CVE-2024-53209 — linux — linux_kernel

In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix receive ring space parameters when XDP is active The MTU setting at the time an XDP multi-buffer is attached determines whether the aggregation ring will be used and the rx_skb_func handler. This is done in bnxt_set_rx_skb_mode(). If the MTU is later changed, the aggregation ring setting may need to be changed and it may become out-of-sync with the settings initially done in bnxt_set_rx_skb_mode(). This may res

Sunday, September 27, 2026linuxVulnios Threat Intelligence
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Vulnerability Snapshot

CVE-2024-53209 is rated CRITICAL — exploitation is trivial or already observed in the wild and impact is severe. Patch immediately, not on the next maintenance window.

Affected technology: linux_kernel.

Executive Summary

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

bnxt_en: Fix receive ring space parameters when XDP is active

The MTU setting at the time an XDP multi-buffer is attached

determines whether the aggregation ring will be used and the

rx_skb_func handler. This is done in bnxt_set_rx_skb_mode().

If the MTU is later changed, the aggregation ring setting may need

to be changed and it may become out-of-sync with the settings

initially done in bnxt_set_rx_skb_mode(). This may result in

random memory corruption and crashes as the HW may DMA data larger

than the allocated buffer size, such as:

BUG: kernel NULL pointer dereference, address: 00000000000003c0

PGD 0 P4D 0

Oops: 0000 [#1] PREEMPT SMP NOPTI

CPU: 17 PID: 0 Comm: swapper/17 Kdump: loaded Tainted: G S OE 6.1.0-226bf9805506 #1

Hardware name: Wiwynn Delta Lake PVT BZA.02601.0150/Delta Lake-Class1, BIOS F0E_3A12 08/26/2021

RIP: 0010:bnxt_rx_pkt+0xe97/0x1ae0 [bnxt_en]

Code: 8b 95 70 ff ff ff 4c 8b 9d 48

Why It Matters

CVE-2024-53209 is rated CRITICAL severity, requiring immediate attention from security teams.

CVSS Base Score: 9.8/10

Affected Technologies

Vendors: linux

Products: linux_kernel

🛡️What Defenders Should Check

  • Check if you are affected — Review your asset inventory for products listed in CVE-2024-53209.
  • Apply available patches — Visit vendor advisories for the latest security updates.
  • Monitor for exploitation — Check your SIEM/IDS logs for related indicators.

    • Use Vulnios to continuously monitor your exposure to CVE-2024-53209 and similar vulnerabilities.

    References & Sources

  • https://git.kernel.org/stable/c/3051a77a09dfe3022aa012071346937fdf059033
  • https://git.kernel.org/stable/c/7f306c651feab2f3689185f60b94e72b573255db
  • https://git.kernel.org/stable/c/84353386762a0a16dd444ead76c012e167d89b41
  • https://git.kernel.org/stable/c/b7fd784d7c6a1bd927a23e0d06f09a776ee3889b
  • https://git.kernel.org/stable/c/bf54a7660fc8d2166f41ff1d67a643b15d8b2250
  • https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html

    • How Vulnios Detects This

    Vulnios scans for this vulnerability using Trivy and Grype for CVE matching against your container images and OS package manifests. Run a scan against your environment to see whether you are exposed; findings are linked back to the original CVE record so triage starts with the patch path already known.

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    Affected Products

    linux_kernel

    Sources

    Related Threat Alerts

    Frequently Asked Questions

    What is CVE-2024-53209?

    CVE-2024-53209 is a critical-severity vulnerability tracked under the Common Vulnerabilities and Exposures program. In the Linux kernel, the following vulnerability has been resolved:

    bnxt_en: Fix receive ring space parameters when XDP is active

    The MTU setting at the time an XDP multi-buffer is attached

    determin

    Am I affected?

    Check whether your environment runs linux_kernel. If you operate any of those, treat yourself as in scope until you have evidence otherwise. A Vulnios scan will identify the exact assets carrying the affected version.

    How urgent is the response?

    Critical: do not wait for your normal patch cycle. Verify exposure today, apply the vendor patch immediately, and add detection rules for any post-exploit indicators.

    How do I remediate?

    Apply the vendor patch listed in the upstream advisory linked under Sources. If the patch is not yet available, follow the vendor-supplied workaround (often a config flag or feature disable) and add detections for the published exploit pattern in your SIEM. Re-scan after the patch lands to confirm the finding clears.

    Where can I track exploitation activity?

    Watch CISA's Known Exploited Vulnerabilities catalog for CVE-2024-53209. Cross-reference with public exploit databases and your own SIEM/IDS for indicator-of-compromise patterns. Vulnios tracks KEV status automatically and surfaces it on the asset findings view.

    How does Vulnios help with this?

    Vulnios continuously cross-references your asset inventory against the live CVE feed (NVD, vendor advisories, CISA KEV, and curated OSINT). When a new CVE matches your environment, you get a prioritized finding with the severity, KEV status, exploit-prediction (EPSS), and a direct path to the vendor patch. You can start a free scan from the homepage.

    critical

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