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Actively exploited

CVE-2024-53197 Linux Kernel Out-of-Bounds Access Vulnerability

Linux Kernel contains an out-of-bounds access vulnerability in the USB-audio driver that allows an attacker with physical access to the system to use a malicious USB device to potentially manipulate system memory, escalate privileges, or execute arbitrary code.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch urgentlyCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 9 Apr 2025.
  • Rated High severity (CVSS 7.8, scored by CISA).
  • It has been in the catalogue for 576 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices A bogus device can provide a bNumConfigurations value that exceeds the initial value used in usb_get_configuration for allocating dev->config. This can lead to out-of-bounds accesses later, e.g. in usb_destroy_configuration.

Affected Versions

ProductVersions
Linux Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0b4ea4bfe16566b84645ded1403756a2dc4e0f19
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9b8460a2a7ce478e0b625af7c56d444dc24190f7
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 62dc01c83fa71e10446ee4c31e0e3d5d1291e865
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9887d859cd60727432a01564e8f91302d361b72b
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 920a369a9f014f10ec282fd298d0666129379f1b
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b8f8b81dabe52b413fe9e062e8a852c48dd0680d
Linux Linux2.6.12

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Linux Kernel. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated high, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 30 Apr 2025 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

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More Exploited Linux Flaws

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CVE-2026-46300Linux Kernel Missing Initialization of a Variable VulnerabilityAdded 28 Oct 2026CVE-2025-39964Linux Kernel Race Condition VulnerabilityAdded 18 Sep 2026CVE-2026-53266Linux Kernel Out-of-Bounds Write VulnerabilityAdded 18 Sep 2026CVE-2025-39682Linux Kernel Improper Check for Unusual or Exceptional Conditions VulnerabilityAdded 18 Sep 2026CVE-2026-53362Linux Kernel Unspecified VulnerabilityAdded 27 Aug 2026CVE-2022-0995Linux Kernel Out-of-Bounds Write VulnerabilityAdded 26 Aug 2026

All 32 exploited Linux vulnerabilities

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2024-53197
  3. CVE record: CVE-2024-53197
  4. FIRST EPSS
  5. source.android.com/docs/security/bulletin/2025-04-01
  6. git.kernel.org/stable/c/0b4ea4bfe16566b84645ded1403756a2dc4e0f19
  7. git.kernel.org/stable/c/9b8460a2a7ce478e0b625af7c56d444dc24190f7
  8. git.kernel.org/stable/c/62dc01c83fa71e10446ee4c31e0e3d5d1291e865
  9. git.kernel.org/stable/c/9887d859cd60727432a01564e8f91302d361b72b
  10. git.kernel.org/stable/c/920a369a9f014f10ec282fd298d0666129379f1b
  11. git.kernel.org/stable/c/b8f8b81dabe52b413fe9e062e8a852c48dd0680d
  12. git.kernel.org/stable/c/379d3b9799d9da953391e973b934764f01e03960