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NVD / CVE Program· CNA Linux

CVE-2024-56726: octeontx2-pf: handle otx2_mbox_get_rsp errors in cn10k.c

MediumCVSS 5.5 · v3.1—No exploit Fix available

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: 0.20% (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 41f39f4c67253f802809310be6846ff408c3c758, 54abcec092616a4d01195355eb5d6036fb8fe363, 856ad633e11869729be698df2287ecfe6ec31f27; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; cbl2 kernel 5.15.173.1-2 on CBL Mariner 2.0 5.15.176.3-1.

Low priority for now. Upgrade to Linux Linux 41f39f4c67253f802809310be6846ff408c3c758, 54abcec092616a4d01195355eb5d6036fb8fe363, 856ad633e11869729be698df2287ecfe6ec31f27; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; cbl2 kernel 5.15.173.1-2 on CBL Mariner 2.0 5.15.176.3-1 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: octeontx2-pf: handle otx2_mbox_get_rsp errors in cn10k.c Add error pointer check after calling otx2_mbox_get_rsp().

Published
Dec 29, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 11th 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-2024-56726

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

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

    • 5.14affected
    • 2ca89a2c37527221edc549ffd3b65c6f8d9d4088 and later · before a374e7e79fbdd7574bd89344447b0d4b91ba9801affected · git
    • 2ca89a2c37527221edc549ffd3b65c6f8d9d4088 and later · before 856ad633e11869729be698df2287ecfe6ec31f27affected · git
    • 2ca89a2c37527221edc549ffd3b65c6f8d9d4088 and later · before c5a6c5af434671aea739a5a41c849819144f02c9affected · git
    • 2ca89a2c37527221edc549ffd3b65c6f8d9d4088 and later · before 41f39f4c67253f802809310be6846ff408c3c758affected · git
    • 2ca89a2c37527221edc549ffd3b65c6f8d9d4088 and later · before 54abcec092616a4d01195355eb5d6036fb8fe363affected · git
    • 2ca89a2c37527221edc549ffd3b65c6f8d9d4088 and later · before ac9183023b6a9c09467516abd8aab04f9a2f9564affected · git
    • before 5.14not affected · semver
    • 5.15.174 and later · up to and including 5.15.*not affected · semver
    • 6.1.120 and later · up to and including 6.1.*not affected · semver
Affected versions · NVD (5)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.14 and later · before 5.15.174
  • linux linux kernel5.16 and later · before 6.1.120
  • linux linux kernel6.2 and later · before 6.6.64
  • linux linux kernel6.7 and later · before 6.11.11
  • linux linux kernel6.12 and later · before 6.12.2

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.123-16.1.123-1
Debian:13linuxbefore 6.12.3-16.12.3-1

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-2024-56724Dec 29, 2024 · mfd: intel_soc_pmic_bxtwc: Use IRQ domain for TMU device
    22Monitor
  • ← EarlierCVE-2024-56725Dec 29, 2024 · octeontx2-pf: handle otx2_mbox_get_rsp errors in otx2_dcbnl.c
    22Monitor
  • Later →CVE-2024-56727Dec 29, 2024 · octeontx2-pf: handle otx2_mbox_get_rsp errors in otx2_flows.c
    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 Linux41f39f4c67253f802809310be6846ff408c3c758Vendor (CNA)
Linux Linux54abcec092616a4d01195355eb5d6036fb8fe363Vendor (CNA)
Linux Linux856ad633e11869729be698df2287ecfe6ec31f27Vendor (CNA)
Linux Linuxa374e7e79fbdd7574bd89344447b0d4b91ba9801Vendor (CNA)
Linux Linuxac9183023b6a9c09467516abd8aab04f9a2f9564Vendor (CNA)
Linux Linuxc5a6c5af434671aea739a5a41c849819144f02c9Vendor (CNA)
azl3 kernel 6.6.57.1-7 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-2 on CBL Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.123-1 · 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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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.

References

Show all references (6 more)

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

All records