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NVD / CVE Program· CNA Linux

CVE-2022-49538: ALSA: jack: Access input_dev under mutex

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: 0.27% (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 1b6a6fc5280e97559287b61eade2d4b363e836f2, 582aea6084cc59fec881204f026816d1219f2348, 5cc6f623f4818c7d7e9e966a45ebf324901ca9c5.

Low priority for now. Upgrade to Linux Linux 1b6a6fc5280e97559287b61eade2d4b363e836f2, 582aea6084cc59fec881204f026816d1219f2348, 5cc6f623f4818c7d7e9e966a45ebf324901ca9c5 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: jack: Access input_dev under mutex It is possible when using ASoC that input_dev is unregistered while calling snd_jack_report, which causes NULL pointer dereference. In order to prevent this serialize access to input_dev using mutex lock.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 19th 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 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2022-49538

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 4.9.318
  • linux linux kernel4.10 and later · before 4.14.283
  • linux linux kernel4.15 and later · before 4.19.247
  • linux linux kernel4.20 and later · before 5.4.198
  • linux linux kernel5.5 and later · before 5.10.121
  • linux linux kernel5.11 and later · before 5.15.46
  • linux linux kernel5.16 and later · before 5.17.14
  • linux linux kernel5.18 and later · before 5.18.3

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

    • 3.13affected
    • 32b8544296b944b204b33f9837701d4d0b9adefe and later · before 74bab3bcf422593c582e47130aa8eb41ebb2dc09affected · git
    • 32b8544296b944b204b33f9837701d4d0b9adefe and later · before 8487a88136d54a1a4d3f26f1399685db648ab879affected · git
    • 32b8544296b944b204b33f9837701d4d0b9adefe and later · before c093b62c40027c21d649c5534ad7aa3605a99b00affected · git
    • 32b8544296b944b204b33f9837701d4d0b9adefe and later · before f68bed124c7699e23ffb4ce4fcc84671e9193cdeaffected · git
    • 32b8544296b944b204b33f9837701d4d0b9adefe and later · before e2b8681769f6e205382f026b907d28aa5ec9d59aaffected · git
    • 32b8544296b944b204b33f9837701d4d0b9adefe and later · before 5cc6f623f4818c7d7e9e966a45ebf324901ca9c5affected · git
    • 32b8544296b944b204b33f9837701d4d0b9adefe and later · before 9e6a73b0c0f2014eb89249fb1640c5a3d58221c4affected · git
    • 32b8544296b944b204b33f9837701d4d0b9adefe and later · before 582aea6084cc59fec881204f026816d1219f2348affected · git
    • 32b8544296b944b204b33f9837701d4d0b9adefe and later · before 1b6a6fc5280e97559287b61eade2d4b363e836f2affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.5-15.18.5-1

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-2022-49536Feb 26, 2025 · scsi: lpfc: Fix SCSI I/O completion and abort handler deadlock
    22Monitor
  • ← EarlierCVE-2022-49537Feb 26, 2025 · scsi: lpfc: Fix call trace observed during I/O with CMF enabled
    22Monitor
  • Later →CVE-2022-49539Feb 26, 2025 · rtw89: ser: fix CAM leaks occurring in L2 reset
    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 Linux1b6a6fc5280e97559287b61eade2d4b363e836f2Vendor (CNA)
Linux Linux582aea6084cc59fec881204f026816d1219f2348Vendor (CNA)
Linux Linux5cc6f623f4818c7d7e9e966a45ebf324901ca9c5Vendor (CNA)
Linux Linux74bab3bcf422593c582e47130aa8eb41ebb2dc09Vendor (CNA)
Linux Linux8487a88136d54a1a4d3f26f1399685db648ab879Vendor (CNA)
Linux Linux9e6a73b0c0f2014eb89249fb1640c5a3d58221c4Vendor (CNA)
Linux Linuxc093b62c40027c21d649c5534ad7aa3605a99b00Vendor (CNA)
Linux Linuxe2b8681769f6e205382f026b907d28aa5ec9d59aVendor (CNA)
Linux Linuxf68bed124c7699e23ffb4ce4fcc84671e9193cdeVendor (CNA)
debian:linux5.18.5-1 · 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).

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-476 · NULL Pointer Dereference

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 (8 more)

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

All records