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NVD / CVE Program· CNA Linux

CVE-2024-27401: firewire: nosy: ensure user_length is taken into account when fetching packet contents

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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: 0.29% (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 1fe60ee709436550f8cfbab01295936b868d5baa, 38762a0763c10c24a4915feee722d7aa6e73eb98, 4ee0941da10e8fdcdb34756b877efd3282594c1f.

Low priority for now. Upgrade to Linux Linux 1fe60ee709436550f8cfbab01295936b868d5baa, 38762a0763c10c24a4915feee722d7aa6e73eb98, 4ee0941da10e8fdcdb34756b877efd3282594c1f 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: firewire: nosy: ensure user_length is taken into account when fetching packet contents Ensure that packet_buffer_get respects the user_length provided. If the length of the head packet exceeds the user_length, packet_buffer_get will now return 0 to signify to the user that no data were read and a larger buffer size is required. Helps prevent user space overflows.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
May 14, 2024
Updated
Aug 5, 2026
EPSS
0.2% · 22th percentile
CWE
—

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 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
7.1
CNA · Linux
7.8
0.7 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-2024-27401

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
debiandebian linux
fedoraprojectfedora

Affected versions

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

  • debian debian linux10.0
  • fedoraproject fedora39
  • fedoraproject fedora40
  • linux linux kernel5.11 and later · before 5.15.159
  • linux linux kernel5.16 and later · before 6.1.91
  • linux linux kernel2.6.36 and later · before 4.19.314
  • linux linux kernel6.7 and later · before 6.8.10
  • linux linux kernel6.2 and later · before 6.6.31
  • linux linux kernel4.20 and later · before 5.4.276
  • linux linux kernel5.5 and later · before 5.10.217
  • linux linux kernel6.9

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

    • 2.6.36affected
    • 286468210d83ce0ca1e37e346ed9f4457a161650 and later · before 67f34f093c0f7bf33f5b4ae64d3d695a3b978285affected · git
    • 286468210d83ce0ca1e37e346ed9f4457a161650 and later · before 7b8c7bd2296e95b38a6ff346242356a2e7190239affected · git
    • 286468210d83ce0ca1e37e346ed9f4457a161650 and later · before cca330c59c54207567a648357835f59df9a286bbaffected · git
    • 286468210d83ce0ca1e37e346ed9f4457a161650 and later · before 79f988d3ffc1aa778fc5181bdfab312e57956c6baffected · git
    • 286468210d83ce0ca1e37e346ed9f4457a161650 and later · before 4ee0941da10e8fdcdb34756b877efd3282594c1faffected · git
    • 286468210d83ce0ca1e37e346ed9f4457a161650 and later · before 1fe60ee709436550f8cfbab01295936b868d5baaaffected · git
    • 286468210d83ce0ca1e37e346ed9f4457a161650 and later · before 539d51ac48bcfcfa1b3d4a85f8df92fa22c1d41caffected · git
    • 286468210d83ce0ca1e37e346ed9f4457a161650 and later · before 38762a0763c10c24a4915feee722d7aa6e73eb98affected · git
    • before 2.6.36not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:10linux-5.10before 5.10.218-1~deb10u15.10.218-1~deb10u1
Debian:11linuxbefore 5.10.218-15.10.218-1
Debian:12linuxbefore 6.1.94-16.1.94-1
Debian:13linuxbefore 6.8.11-16.8.11-1

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-2024-27399May 14, 2024 · Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout
    22Monitor
  • ← EarlierCVE-2024-27400May 14, 2024 · drm/amdgpu: once more fix the call oder in amdgpu_ttm_move() v2
    22Monitor
  • Later →CVE-2024-27395May 14, 2024 · net: openvswitch: Fix Use-After-Free in ovs_ct_exit
    31Monitor

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 Linux1fe60ee709436550f8cfbab01295936b868d5baaVendor (CNA)
Linux Linux38762a0763c10c24a4915feee722d7aa6e73eb98Vendor (CNA)
Linux Linux4ee0941da10e8fdcdb34756b877efd3282594c1fVendor (CNA)
Linux Linux539d51ac48bcfcfa1b3d4a85f8df92fa22c1d41cVendor (CNA)
Linux Linux67f34f093c0f7bf33f5b4ae64d3d695a3b978285Vendor (CNA)
Linux Linux79f988d3ffc1aa778fc5181bdfab312e57956c6bVendor (CNA)
Linux Linux7b8c7bd2296e95b38a6ff346242356a2e7190239Vendor (CNA)
Linux Linuxcca330c59c54207567a648357835f59df9a286bbVendor (CNA)
debian:linux6.1.94-1 · Debian:12Package registry (OSV)
debian:linux-5.105.10.218-1~deb10u1 · Debian:10Package 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).

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
high · data can be read
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
High
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:H/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 (11 more)

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

All records