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NVD / CVE Program· CNA fedora

CVE-2026-3195: Qemu-kvm: virtio-snd: heap buffer overflow in virtio_snd_pcm_in_cb (incomplete fix for cve-2024-7730)

Noroxi assessment

Priority: Monitor (action score 29/100)

  • 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: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: azl3 qemu 9.1.0-8 on Azure Linux 3.0 9.1.0-8; azl3 qemu 9.1.0-9 on Azure Linux 3.0 9.1.0-8.

Low priority for now. Upgrade to azl3 qemu 9.1.0-8 on Azure Linux 3.0 9.1.0-8; azl3 qemu 9.1.0-9 on Azure Linux 3.0 9.1.0-8 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

A flaw was found in QEMU. When reading input audio in the virtio-snd device input callback, the `virtio_snd_pcm_in_cb` function did not check whether the iov could fit the data buffer, potentially leading to a heap out-of-bounds write. This issue exists due to an incomplete fix for CVE-2024-7730.

HighCVSS 7.4 · v3.1—No exploit Fix available
Published
Jun 19, 2026
Updated
Sep 1, 2026
EPSS
0.1% · 6th percentile

Report tools

JSON

Action score

29

Monitor

Low priority for now.

CVSS
29 / 40 · 7.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · fedora
7.4
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-2026-3195

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
enterprise linux10
enterprise linux6
enterprise linux7
enterprise linux8
enterprise linux9
openshift4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (fedora). Independent of NVD's CPE analysis and usually ahead of it.

  • gitlab.com/qemu-project/qemu qemu

    • 8.2.0 and later · up to and including 10.2.1affected · semver

  • Red Hat Red Hat Enterprise Linux 10

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsunknown
    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsunknown

  • Red Hat Red Hat OpenShift Container Platform 4

    • all versionsunknown

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:13qemubefore 1:10.0.10+ds-0+deb13u11:10.0.10+ds-0+deb13u1
Debian:14qemubefore 1:10.2.2+ds-11:10.2.2+ds-1
openSUSE:Leap 16.0qemubefore 10.0.9-160000.1.110.0.9-160000.1.1
openSUSE:Leap 16.0qemu-linux-userbefore 10.0.9-160000.1.110.0.9-160000.1.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7qemubefore 9.2.4-150700.3.20.19.2.4-150700.3.20.1
SUSE:Linux Enterprise Module for Package Hub 15 SP7qemu-linux-userbefore 9.2.4-150700.3.20.19.2.4-150700.3.20.1
SUSE:Linux Enterprise Server 15 SP6-LTSSqemubefore 8.2.10-150600.3.49.18.2.10-150600.3.49.1
SUSE:Linux Micro 6.2qemubefore 10.0.9-160000.1.110.0.9-160000.1.1

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-10230Samba: command injection in wins server hook script
    52Plan
  • CVE-2026-4631Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument injection
    44Plan
  • CVE-2026-76578Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-10649Jun 16, 2026 · Pacemaker: pacemaker: denial of service via integer overflow in remote message decompression
    34Monitor
  • ← EarlierCVE-2026-12505Jun 18, 2026 · Cifs-utils: local privilege escalation via forged cifs.spnego key description in cifs.upcall
    31Monitor
  • Later →CVE-2026-3196Jun 19, 2026 · Qemu-kvm: virtio-snd: integer overflow leading to unbounded memory allocation
    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
azl3 qemu 9.1.0-8 on Azure Linux 3.09.1.0-8 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 qemu 9.1.0-9 on Azure Linux 3.09.1.0-8 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:qemu1:10.0.10+ds-0+deb13u1 · Debian:13Package registry (OSV)
opensuse:qemu10.0.9-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:qemu-linux-user10.0.9-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
suse:qemu10.0.9-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:qemu-linux-user9.2.4-150700.3.20.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP7Package 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.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-527204 days apartGstreamer1-plugins-bad-free: gstreamer: heap buffer overflow via crafted vnc server rectangle in librfb
    35Monitor
  • CVE-2026-8166577 days apartCorosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly
    30Monitor
  • CVE-2026-107161110 days apartCyrus-sasl: heap buffer overflow in cyrus-sasl add_to_challenge() allows malicious server to crash or compromise digest-md5 clients
    30Monitor
  • CVE-2026-1291210 days apartLibtiff: libtiff: heap-based buffer overflow via crafted pixarlog-compressed tiff image
    29Monitor
  • CVE-2026-103242103 days apartRpm: heap-based buffer overflow write in hex2binv() via a mistyped rpmtag_filesignatures header tag
    28Monitor
  • CVE-2026-489147 days apartQemu-kvm: heap buffer overflow in virtio-blk scsi request handling
    26Monitor

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.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

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
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

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

All records