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NVD / CVE Program· CNA Linux

CVE-2026-53291: ALSA: hda/conexant: Fix missing error check for jack detection

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: 0.12% (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 1da5c73f3793b224696617a2a21def7500ba18d6, 49c2c5924552e1d2f8b635dee663abebbb7cf63b, 5.15.209; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.143.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 1da5c73f3793b224696617a2a21def7500ba18d6, 49c2c5924552e1d2f8b635dee663abebbb7cf63b, 5.15.209; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.143.1-1 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: hda/conexant: Fix missing error check for jack detection In cx_probe(), the return value of snd_hda_jack_detect_enable_callback() is ignored. This function returns a pointer, and if it fails (e.g., due to memory allocation failure), it returns an error pointer which must be checked using IS_ERR(). If the registration fails, the driver continues to probe, but the jack detection callback will not be registered. This can lead to a kernel crash later when the driver attempts to handle jack events or accesses the uninitialized structure. Check the return value using IS_ERR() and propagate the error via PTR_ERR() to the probe caller.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jun 26, 2026
Updated
Jul 7, 2026
EPSS
0.1% · 2th 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 · 0.1%

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.

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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 kernel5.15.149 and later · before 5.15.209
  • linux linux kernel6.1.77 and later · before 6.1.175
  • linux linux kernel6.6.16 and later · before 6.6.141
  • linux linux kernel6.7.4 and later · before 6.12.91
  • linux linux kernel6.13 and later · before 6.18.33
  • linux linux kernel6.19 and later · before 7.0.10
  • linux linux kernel7.1

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

    • 4a28302b2c681e3cf85e3b41231fff363c4c6a0e, 6.8affected
    • f13b8cb5a6920ad98b751d3134686f29810577d4 and later · before 49c2c5924552e1d2f8b635dee663abebbb7cf63baffected · git
    • 2cb659ef0ac744545499e7c37665b276d9e405da and later · before a2a33e87a2ffce3046c574d24eec4390c27c9365affected · git
    • 24d748413cc4e1d97074bae1f335d32d30912f10 and later · before d68f753d89f4ef6e410d7e8b7e8ab2fdde921b80affected · git
    • 7aeb259086487417f0fecf66e325bee133e8813a and later · before dd110cc00cf854a8ecd8d003127a4178c28574eaaffected · git
    • 7aeb259086487417f0fecf66e325bee133e8813a and later · before f837c7b85143a7c54140ff41ad5c076b73cd9933affected · git
    • 7aeb259086487417f0fecf66e325bee133e8813a and later · before 1da5c73f3793b224696617a2a21def7500ba18d6affected · git
    • 7aeb259086487417f0fecf66e325bee133e8813a and later · before b0e2333a231107adedd38c6fcfe1adc6162716fcaffected · git
    • 5.15.149 and later · before 5.15.209affected · semver
    • 6.1.77 and later · before 6.1.175affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.94-16.12.94-1
Debian:14linuxbefore 7.0.10-17.0.10-1

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-2026-53288Jun 26, 2026 · arm64: Reserve an extra page for early kernel mapping
    22Monitor
  • ← EarlierCVE-2026-53289Jun 26, 2026 · ice: fix NULL pointer dereference in ice_reset_all_vfs()
    22Monitor
  • Later →CVE-2026-53293Jun 26, 2026 · drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG
    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 Linux1da5c73f3793b224696617a2a21def7500ba18d6Vendor (CNA)
Linux Linux49c2c5924552e1d2f8b635dee663abebbb7cf63bVendor (CNA)
Linux Linux5.15.209Vendor (CNA)
Linux Linux6.1.175Vendor (CNA)
Linux Linux6.6.141Vendor (CNA)
Linux Linux6.8Vendor (CNA)
Linux Linuxa2a33e87a2ffce3046c574d24eec4390c27c9365Vendor (CNA)
Linux Linuxb0e2333a231107adedd38c6fcfe1adc6162716fcVendor (CNA)
Linux Linuxd68f753d89f4ef6e410d7e8b7e8ab2fdde921b80Vendor (CNA)
Linux Linuxdd110cc00cf854a8ecd8d003127a4178c28574eaVendor (CNA)
Linux Linuxf837c7b85143a7c54140ff41ad5c076b73cd9933Vendor (CNA)
azl3 kernel 6.6.139.1-1 on Azure Linux 3.06.6.143.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.176-1 · 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-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 (6 more)

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

All records