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NVD / CVE Program· CNA Linux

CVE-2024-42097: ALSA: emux: improve patch ioctl data validation

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: 0.23% (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 40d7def67841343c10f8642a41031fecbb248bab, 79d9a000f0220cdaba1682d2a23c0d0c61d620a3, 7a18293fd8d8519c2f7a03753bc1583b18e3db69.
  • 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 40d7def67841343c10f8642a41031fecbb248bab, 79d9a000f0220cdaba1682d2a23c0d0c61d620a3, 7a18293fd8d8519c2f7a03753bc1583b18e3db69 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: emux: improve patch ioctl data validation In load_data(), make the validation of and skipping over the main info block match that in load_guspatch(). In load_guspatch(), add checking that the specified patch length matches the actually supplied data, like load_data() already did.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 29, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 14th 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-2024-42097

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 kernelbefore 4.19.317
  • linux linux kernel4.20 and later · before 5.4.279
  • linux linux kernel5.5 and later · before 5.10.221
  • linux linux kernel5.11 and later · before 5.15.162
  • linux linux kernel5.16 and later · before 6.1.97
  • linux linux kernel6.2 and later · before 6.6.37
  • linux linux kernel6.7 and later · before 6.9.8

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

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 40d7def67841343c10f8642a41031fecbb248babaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 79d9a000f0220cdaba1682d2a23c0d0c61d620a3affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before d23982ea9aa438f35a8c8a6305943e98a8db90f6affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 7a18293fd8d8519c2f7a03753bc1583b18e3db69affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before d0ff2443fcbb472206d45a5d2a90cc694065804eaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before d8f5ce3cb9adf0c72e2ad6089aba02d7a32469c2affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 87039b83fb7bfd7d0e0499aaa8e6c049906b4d14affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 89b32ccb12ae67e630c6453d778ec30a592a212faffected · git
    • before 2.6.12not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.98-16.1.98-1
Debian:13linuxbefore 6.9.8-16.9.8-1

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-2024-42094Jul 29, 2024 · net/iucv: Avoid explicit cpumask var allocation on stack
    28Monitor
  • ← EarlierCVE-2024-42096Jul 29, 2024 · x86: stop playing stack games in profile_pc()
    22Monitor
  • Later →CVE-2024-42099Jul 30, 2024 · s390/dasd: Fix invalid dereferencing of indirect CCW data pointer
    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 Linux40d7def67841343c10f8642a41031fecbb248babVendor (CNA)
Linux Linux79d9a000f0220cdaba1682d2a23c0d0c61d620a3Vendor (CNA)
Linux Linux7a18293fd8d8519c2f7a03753bc1583b18e3db69Vendor (CNA)
Linux Linux87039b83fb7bfd7d0e0499aaa8e6c049906b4d14Vendor (CNA)
Linux Linux89b32ccb12ae67e630c6453d778ec30a592a212fVendor (CNA)
Linux Linuxd0ff2443fcbb472206d45a5d2a90cc694065804eVendor (CNA)
Linux Linuxd23982ea9aa438f35a8c8a6305943e98a8db90f6Vendor (CNA)
Linux Linuxd8f5ce3cb9adf0c72e2ad6089aba02d7a32469c2Vendor (CNA)
debian:linux6.1.98-1 · 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