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NVD / CVE Program· CNA Linux

CVE-2024-46739: uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind

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 1d8e020e51ab07e40f9dd00b52f1da7d96fec04c, 2be373469be1774bbe03b0fa7e2854e65005b1cc, 3005091cd537ef8cdb7530dcb2ecfba8d2ef475c; Azure Linux 3.0 ARM 6.6.51.1-5; Azure Linux 3.0 x64 6.6.51.1-5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 1d8e020e51ab07e40f9dd00b52f1da7d96fec04c, 2be373469be1774bbe03b0fa7e2854e65005b1cc, 3005091cd537ef8cdb7530dcb2ecfba8d2ef475c; Azure Linux 3.0 ARM 6.6.51.1-5; Azure Linux 3.0 x64 6.6.51.1-5 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: uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind For primary VM Bus channels, primary_channel pointer is always NULL. This pointer is valid only for the secondary channels. Also, rescind callback is meant for primary channels only. Fix NULL pointer dereference by retrieving the device_obj from the parent for the primary channel.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 18, 2024
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-2024-46739

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 kernel4.16 and later · before 4.19.322
  • linux linux kernel4.20 and later · before 5.4.284
  • linux linux kernel5.5 and later · before 5.10.226
  • linux linux kernel5.11 and later · before 5.15.167
  • linux linux kernel5.16 and later · before 6.1.110
  • linux linux kernel6.2 and later · before 6.6.51
  • linux linux kernel6.7 and later · before 6.10.10
  • linux linux kernel6.11

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

    • 4.16affected
    • ca3cda6fcf1e922213a0cc58e708ffb999151db3 and later · before 3d414b64ecf6fd717d7510ffb893c6f23acbf50eaffected · git
    • ca3cda6fcf1e922213a0cc58e708ffb999151db3 and later · before f38f46da80a2ab7d1b2f8fcb444c916034a2dac4affected · git
    • ca3cda6fcf1e922213a0cc58e708ffb999151db3 and later · before 1d8e020e51ab07e40f9dd00b52f1da7d96fec04caffected · git
    • ca3cda6fcf1e922213a0cc58e708ffb999151db3 and later · before 3005091cd537ef8cdb7530dcb2ecfba8d2ef475caffected · git
    • ca3cda6fcf1e922213a0cc58e708ffb999151db3 and later · before 2be373469be1774bbe03b0fa7e2854e65005b1ccaffected · git
    • ca3cda6fcf1e922213a0cc58e708ffb999151db3 and later · before de6946be9c8bc7d2279123433495af7c21011b99affected · git
    • ca3cda6fcf1e922213a0cc58e708ffb999151db3 and later · before 928e399e84f4e80307dce44e89415115c473275baffected · git
    • ca3cda6fcf1e922213a0cc58e708ffb999151db3 and later · before fb1adbd7e50f3d2de56d0a2bb0700e2e819a329eaffected · git
    • before 4.16not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.112-16.1.112-1
Debian:13linuxbefore 6.10.11-16.10.11-1

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-2024-46737Sep 18, 2024 · nvmet-tcp: fix kernel crash if commands allocation fails
    22Monitor
  • ← EarlierCVE-2024-46738Sep 18, 2024 · VMCI: Fix use-after-free when removing resource in vmci_resource_remove()
    31Monitor
  • Later →CVE-2024-46740Sep 18, 2024 · binder: fix UAF caused by offsets overwrite
    31Monitor

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 Linux1d8e020e51ab07e40f9dd00b52f1da7d96fec04cVendor (CNA)
Linux Linux2be373469be1774bbe03b0fa7e2854e65005b1ccVendor (CNA)
Linux Linux3005091cd537ef8cdb7530dcb2ecfba8d2ef475cVendor (CNA)
Linux Linux3d414b64ecf6fd717d7510ffb893c6f23acbf50eVendor (CNA)
Linux Linux928e399e84f4e80307dce44e89415115c473275bVendor (CNA)
Linux Linuxde6946be9c8bc7d2279123433495af7c21011b99Vendor (CNA)
Linux Linuxf38f46da80a2ab7d1b2f8fcb444c916034a2dac4Vendor (CNA)
Linux Linuxfb1adbd7e50f3d2de56d0a2bb0700e2e819a329eVendor (CNA)
Azure Linux 3.0 ARM6.6.51.1-5 · kernelMicrosoft (MSRC)
Azure Linux 3.0 x646.6.51.1-5 · kernelMicrosoft (MSRC)
CBL Mariner 2.0 ARM5.15.167.1-1 · kernelMicrosoft (MSRC)
CBL Mariner 2.0 x645.15.167.1-1 · kernelMicrosoft (MSRC)
debian:linux6.1.112-1 · 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 (9 more)

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

All records