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CVE Record

CVE-2024-42306: udf: Avoid using corrupted block bitmap buffer

In the Linux kernel, the following vulnerability has been resolved: udf: Avoid using corrupted block bitmap buffer When the filesystem block bitmap is corrupted, we detect the corruption while loading the bitmap and fail the allocation with error. However the next allocation from the same bitmap will notice the bitmap buffer is already loaded and tries to allocate from the bitmap with mixed results (depending on the exact nature of the bitmap corruption). Fix the problem by using BH_verified bit to indicate whether the bitmap is valid or not.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-42306 is a Linux kernel UDF filesystem flaw. A corrupted UDF block bitmap may be rejected once, then reused later as if valid. The sources do not provide CVSS, impact detail, or active exploitation evidence, so business risk depends on whether systems mount UDF media or images.

Executive priority

Prioritize patching through normal kernel maintenance, with higher urgency for systems processing removable media, disk images, or embedded products listed by vendors. Current public evidence does not support emergency response solely for this CVE.

Technical view

The Linux UDF allocation path could keep a corrupted block bitmap buffer loaded after detecting corruption. Later allocations from the same bitmap could operate on invalid state. Kernel stable fixes use the BH_verified bit to track whether the bitmap buffer has been validated before reuse.

Likely exposure

Exposure is most plausible on Linux systems that mount UDF filesystems, including optical media, removable media, disk images, appliances, or products embedding affected kernels. Systems that never mount UDF content likely have limited practical exposure.

Exploitation context

The source bundle does not cite active exploitation, and KEV is false. It also does not describe a working exploit or final security impact. Treat any exploitation assumptions beyond corrupted UDF filesystem handling as unproven.

Researcher notes

The record is impact-incomplete: no CVSS, CWE, or exploit evidence is provided. Analysis should focus on UDF bitmap validation state, affected stable branches, distro backports, and whether product workflows expose UDF parsing to untrusted content.

Mitigation direction

  • Apply vendor kernel updates that include the listed stable UDF fixes.
  • Check Debian LTS and other distribution advisories for backported kernel packages.
  • For appliances, check Siemens and vendor-specific advisories before field updates.
  • Limit mounting of untrusted UDF media or images where operationally feasible.
  • Monitor vendor guidance because no standalone workaround is named in the sources.

Validation and detection

  • Inventory Linux kernels and map them to vendor-fixed package versions.
  • Identify servers, endpoints, or appliances that mount UDF media or images.
  • Confirm installed kernels include the relevant stable commits or distro backports.
  • Review logs for UDF mount failures or filesystem corruption errors.
  • Track Debian and Siemens advisories for affected product-specific status.
Prepared
Confidence
medium
Sources
12

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2024-42306 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
3ADP providers
11Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux7648ea9896b31aff38830d81188f5b7a1773e4a8, 4ac54312f623c6d2ca30c36c1ef530c11f5aff64, 099bf90d7fc4622da9fd4727f6d318a0f12d10be, 6ac8f2c8362afd2baa8e7b9c946597589e587d22, 1e0d4adf17e7ef03281d7b16555e7c1508c8ed2d, 1e0d4adf17e7ef03281d7b16555e7c1508c8ed2d, 1e0d4adf17e7ef03281d7b16555e7c1508c8ed2d, f862a9049c3f6e73a5504a1ac10ffd5bc253ab55, 4622cc1b6d86013e01c56b60b092b5e4726c8e52, 5.4.257, 5.10.195, 5.15.132, 6.1.53, 4.14.326, 4.19.295unaffected
LinuxLinux6.3, 0, 5.4.282, 5.10.224, 5.15.165, 6.1.103, 6.6.44, 6.10.3, 6.11affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.