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CVE-2022-50719· NVD / CVE Program· CNA Linux

ALSA: line6: fix stack overflow in line6_midi_transmit

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.22% (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 0c76087449ee4ed45a88b10017d02c6694caedb1, 0c9118e381ff538874e00fd4e66a768273c150fb, 25e8c6ecb46843a955f254b8f0d77894e4a53dc4.

Low priority for now. Upgrade to Linux Linux 0c76087449ee4ed45a88b10017d02c6694caedb1, 0c9118e381ff538874e00fd4e66a768273c150fb, 25e8c6ecb46843a955f254b8f0d77894e4a53dc4 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: line6: fix stack overflow in line6_midi_transmit Correctly calculate available space including the size of the chunk buffer. This fixes a buffer overflow when multiple MIDI sysex messages are sent to a PODxt device.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Dec 24, 2025
Updated
Oct 15, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

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-2022-50719

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.

—

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

    • 3.15affected
    • f2459201c72e8f8553644505eed19954d4c3a023 and later · before b026af92b2cea907c780f7168c730c816cd33311affected · git
    • f2459201c72e8f8553644505eed19954d4c3a023 and later · before 49cb7737e733013ec86aa77ed2e19b94a68eaa05affected · git
    • f2459201c72e8f8553644505eed19954d4c3a023 and later · before 0c76087449ee4ed45a88b10017d02c6694caedb1affected · git
    • f2459201c72e8f8553644505eed19954d4c3a023 and later · before 25e8c6ecb46843a955f254b8f0d77894e4a53dc4affected · git
    • f2459201c72e8f8553644505eed19954d4c3a023 and later · before 66f359ad66d49f75d39ac729f9114dabf90b81bbaffected · git
    • f2459201c72e8f8553644505eed19954d4c3a023 and later · before 0c9118e381ff538874e00fd4e66a768273c150fbaffected · git
    • f2459201c72e8f8553644505eed19954d4c3a023 and later · before 61e4be4a60cc6de723f8c574ddbcb3025eb44cacaffected · git
    • f2459201c72e8f8553644505eed19954d4c3a023 and later · before 389d34c2a8b52acc351fd932ed4bea41fee5a39baffected · git
    • f2459201c72e8f8553644505eed19954d4c3a023 and later · before b8800d324abb50160560c636bfafe2c81001b66caffected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.293.14.12.14-122.293.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_77before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.293.14.12.14-122.293.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.293.14.12.14-122.293.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-68733Dec 24, 2025 · smack: fix bug: unprivileged task can create labels
    0Monitor
  • ← EarlierCVE-2025-68734Dec 24, 2025 · isdn: mISDN: hfcsusb: fix memory leak in hfcsusb_probe()
    0Monitor
  • Later →CVE-2022-50746Dec 24, 2025 · erofs: validate the extent length for uncompressed pclusters
    33Monitor

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 Linux0c76087449ee4ed45a88b10017d02c6694caedb1Vendor (CNA)
Linux Linux0c9118e381ff538874e00fd4e66a768273c150fbVendor (CNA)
Linux Linux25e8c6ecb46843a955f254b8f0d77894e4a53dc4Vendor (CNA)
Linux Linux389d34c2a8b52acc351fd932ed4bea41fee5a39bVendor (CNA)
Linux Linux49cb7737e733013ec86aa77ed2e19b94a68eaa05Vendor (CNA)
Linux Linux61e4be4a60cc6de723f8c574ddbcb3025eb44cacVendor (CNA)
Linux Linux66f359ad66d49f75d39ac729f9114dabf90b81bbVendor (CNA)
Linux Linuxb026af92b2cea907c780f7168c730c816cd33311Vendor (CNA)
Linux Linuxb8800d324abb50160560c636bfafe2c81001b66cVendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)
suse:kernel-default4.12.14-122.293.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)
suse:kernel-source4.12.14-122.293.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kernel-syms4.12.14-122.293.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_771-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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
high · data or configuration can be modified
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
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

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. SSVC exploitation— → none
  2. 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