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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.24% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 2199e157a465aaf98294d3932797ecd7fce942d5, 271cab2ca00652bc984e269cf1208699a1e09cdd, 4.15.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 2199e157a465aaf98294d3932797ecd7fce942d5, 271cab2ca00652bc984e269cf1208699a1e09cdd, 4.15 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Aug 17, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 15th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
7.8
2.3 point gap

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-42306

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.14.326 and later · before 4.15
  • linux linux kernel4.19.295 and later · before 4.20
  • linux linux kernel5.4.257 and later · before 5.4.282
  • linux linux kernel5.10.195 and later · before 5.10.224
  • linux linux kernel5.15.132 and later · before 5.15.165
  • linux linux kernel6.1.53 and later · before 6.1.103
  • linux linux kernel6.3 and later · before 6.6.44
  • linux linux kernel6.7 and later · before 6.10.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • f862a9049c3f6e73a5504a1ac10ffd5bc253ab55, 4622cc1b6d86013e01c56b60b092b5e4726c8e52, 6.3affected
    • 7648ea9896b31aff38830d81188f5b7a1773e4a8 and later · before cae9e59cc41683408b70b9ab569f8654866ba914affected · git
    • 4ac54312f623c6d2ca30c36c1ef530c11f5aff64 and later · before 2199e157a465aaf98294d3932797ecd7fce942d5affected · git
    • 099bf90d7fc4622da9fd4727f6d318a0f12d10be and later · before 6a43e3c210df6c5f00570f4be49a897677dbcb64affected · git
    • 6ac8f2c8362afd2baa8e7b9c946597589e587d22 and later · before 271cab2ca00652bc984e269cf1208699a1e09cddaffected · git
    • 1e0d4adf17e7ef03281d7b16555e7c1508c8ed2d and later · before 57053b3bcf3403b80db6f65aba284d7dfe7326afaffected · git
    • 1e0d4adf17e7ef03281d7b16555e7c1508c8ed2d and later · before 8ca170c39eca7cad6e0cfeb24e351d8f8eddcd65affected · git
    • 1e0d4adf17e7ef03281d7b16555e7c1508c8ed2d and later · before a90d4471146de21745980cba51ce88e7926bcc4faffected · git
    • 5.4.257 and later · before 5.4.282affected · semver
    • 5.10.195 and later · before 5.10.224affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.106-16.1.106-1
Debian:13linuxbefore 6.10.3-16.10.3-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-42304Aug 17, 2024 · ext4: make sure the first directory block is not a hole
    22Monitor
  • ← EarlierCVE-2024-42305Aug 17, 2024 · ext4: check dot and dotdot of dx_root before making dir indexed
    22Monitor
  • Later →CVE-2024-42312Aug 17, 2024 · sysctl: always initialize i_uid/i_gid
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2199e157a465aaf98294d3932797ecd7fce942d5Vendor (CNA)
Linux Linux271cab2ca00652bc984e269cf1208699a1e09cddVendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux5.10.224Vendor (CNA)
Linux Linux5.15.165Vendor (CNA)
Linux Linux5.4.282Vendor (CNA)
Linux Linux57053b3bcf3403b80db6f65aba284d7dfe7326afVendor (CNA)
Linux Linux6.1.103Vendor (CNA)
Linux Linux6a43e3c210df6c5f00570f4be49a897677dbcb64Vendor (CNA)
Linux Linux8ca170c39eca7cad6e0cfeb24e351d8f8eddcd65Vendor (CNA)
Linux Linuxa90d4471146de21745980cba51ce88e7926bcc4fVendor (CNA)
Linux Linuxcae9e59cc41683408b70b9ab569f8654866ba914Vendor (CNA)
debian:linux6.1.106-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (9 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records