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NVD / CVE Program· CNA Linux

CVE-2024-27436: ALSA: usb-audio: Stop parsing channels bits when all channels are found.

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: 0.62% (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 22cad1b841a63635a38273b799b4791f202ade72, 5cd466673b34bac369334f66cbe14bb77b7d7827, 629af0d5fe94a35f498ba2c3f19bd78bfa591be6; azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 22cad1b841a63635a38273b799b4791f202ade72, 5cd466673b34bac369334f66cbe14bb77b7d7827, 629af0d5fe94a35f498ba2c3f19bd78bfa591be6; azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1 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: ALSA: usb-audio: Stop parsing channels bits when all channels are found. If a usb audio device sets more bits than the amount of channels it could write outside of the map array.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 17, 2024
Updated
Oct 15, 2026
EPSS
0.6% · 49th percentile

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 · 0.6%

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
5.3
0.2 point gap

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

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-2024-27436

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

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
  • linux linux kernel4.20 and later · before 5.4.273
  • linux linux kernel5.5 and later · before 5.10.214
  • linux linux kernel5.11 and later · before 5.15.153
  • linux linux kernel3.8 and later · before 4.19.311
  • linux linux kernel6.2 and later · before 6.6.23
  • linux linux kernel6.7 and later · before 6.7.11
  • linux linux kernel6.8 and later · before 6.8.2
  • linux linux kernel5.16 and later · before 6.1.83

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

    • 3.8affected
    • 04324ccc75f96b3ed7aad1c866d1b7925e977bdf and later · before 7e2c1b0f6dd9abde9e60f0f9730026714468770faffected · git
    • 04324ccc75f96b3ed7aad1c866d1b7925e977bdf and later · before 6d5dc96b154be371df0d62ecb07efe400701ed8aaffected · git
    • 04324ccc75f96b3ed7aad1c866d1b7925e977bdf and later · before 5cd466673b34bac369334f66cbe14bb77b7d7827affected · git
    • 04324ccc75f96b3ed7aad1c866d1b7925e977bdf and later · before 9af1658ba293458ca6a13f70637b9654fa4be064affected · git
    • 04324ccc75f96b3ed7aad1c866d1b7925e977bdf and later · before 629af0d5fe94a35f498ba2c3f19bd78bfa591be6affected · git
    • 04324ccc75f96b3ed7aad1c866d1b7925e977bdf and later · before 22cad1b841a63635a38273b799b4791f202ade72affected · git
    • 04324ccc75f96b3ed7aad1c866d1b7925e977bdf and later · before c8a24fd281dcdf3c926413dafbafcf35cde517a9affected · git
    • 04324ccc75f96b3ed7aad1c866d1b7925e977bdf and later · before 6d88b289fb0a8d055cb79d1c46a56aba7809d96daffected · git
    • 04324ccc75f96b3ed7aad1c866d1b7925e977bdf and later · before a39d51ff1f52cd0b6fe7d379ac93bd8b4237d1b7affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.85-16.1.85-1
Debian:13linuxbefore 6.7.12-16.7.12-1

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-2024-27419May 17, 2024 · netrom: Fix data-races around sysctl_net_busy_read
    18Monitor
  • ← EarlierCVE-2024-27431May 17, 2024 · cpumap: Zero-initialise xdp_rxq_info struct before running XDP program
    22Monitor
  • Later →CVE-2024-35784May 17, 2024 · btrfs: fix deadlock with fiemap and extent locking
    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 Linux22cad1b841a63635a38273b799b4791f202ade72Vendor (CNA)
Linux Linux5cd466673b34bac369334f66cbe14bb77b7d7827Vendor (CNA)
Linux Linux629af0d5fe94a35f498ba2c3f19bd78bfa591be6Vendor (CNA)
Linux Linux6d5dc96b154be371df0d62ecb07efe400701ed8aVendor (CNA)
Linux Linux6d88b289fb0a8d055cb79d1c46a56aba7809d96dVendor (CNA)
Linux Linux7e2c1b0f6dd9abde9e60f0f9730026714468770fVendor (CNA)
Linux Linux9af1658ba293458ca6a13f70637b9654fa4be064Vendor (CNA)
Linux Linuxa39d51ff1f52cd0b6fe7d379ac93bd8b4237d1b7Vendor (CNA)
Linux Linuxc8a24fd281dcdf3c926413dafbafcf35cde517a9Vendor (CNA)
azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.06.6.35.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.06.6.35.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.85-1 · 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)

CWE-787 · Out-of-bounds Write

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 (11 more)

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

All records