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NVD / CVE Program· CNA Linux

CVE-2026-74279: crypto: cavium/cpt - fix DMA cleanup using wrong loop index

Noroxi assessment

Priority: Plan (action score 40/100)

  • 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: 0.75% (FIRST EPSS); higher than 55.3% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 23c6174e48f66fc10b998b0acdb406cb0caf5c80, 23d3a7e896a1fe2d7a6bcb42f093948b79f8a198, 28141f95ae93b18f9bfde953cb787fcb151fb9da.

Add it to your regular patch cycle. Upgrade to Linux Linux 23c6174e48f66fc10b998b0acdb406cb0caf5c80, 23d3a7e896a1fe2d7a6bcb42f093948b79f8a198, 28141f95ae93b18f9bfde953cb787fcb151fb9da 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: crypto: cavium/cpt - fix DMA cleanup using wrong loop index The sg_cleanup error path used list[i] instead of list[j] when unmapping DMA buffers, leaking successfully mapped entries and repeatedly unmapping the failed one.

CriticalCVSS 10.0 · v3.1—No exploit Fix available
Published
Aug 15, 2026
Updated
Oct 16, 2026
EPSS
0.7% · 55th percentile
CWE
—

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
40 / 40 · 10.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
10.0
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-2026-74279

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

    • 4.11affected
    • c694b233295b99c33dd5ac28aede9f171f5a6862 and later · before 23c6174e48f66fc10b998b0acdb406cb0caf5c80affected · git
    • c694b233295b99c33dd5ac28aede9f171f5a6862 and later · before 23d3a7e896a1fe2d7a6bcb42f093948b79f8a198affected · git
    • c694b233295b99c33dd5ac28aede9f171f5a6862 and later · before 28141f95ae93b18f9bfde953cb787fcb151fb9daaffected · git
    • c694b233295b99c33dd5ac28aede9f171f5a6862 and later · before 8afd1007ef79898a6e010eaade97097e49405fceaffected · git
    • c694b233295b99c33dd5ac28aede9f171f5a6862 and later · before 3b8a1e1f4e4071a62b20374028744e8cc8310d48affected · git
    • c694b233295b99c33dd5ac28aede9f171f5a6862 and later · before fb4d57b83356d4bd411b45ede3024e0ff42c9b5eaffected · git
    • c694b233295b99c33dd5ac28aede9f171f5a6862 and later · before d319b83b97b3585550d9ae592dfa78c755b6129eaffected · git
    • c694b233295b99c33dd5ac28aede9f171f5a6862 and later · before 9dbf173bd32d5f81b005008b682bfb50aa093455affected · git
    • before 4.11not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

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-2026-74277Aug 15, 2026 · iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path
    35Monitor
  • ← EarlierCVE-2026-74278Aug 15, 2026 · ALSA: seq: Fix kernel heap address leak in bounce_error_event()
    0Monitor
  • Later →CVE-2026-74281Aug 15, 2026 · tipc: reject inverted service ranges from peer bindings
    30Monitor

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 Linux23c6174e48f66fc10b998b0acdb406cb0caf5c80Vendor (CNA)
Linux Linux23d3a7e896a1fe2d7a6bcb42f093948b79f8a198Vendor (CNA)
Linux Linux28141f95ae93b18f9bfde953cb787fcb151fb9daVendor (CNA)
Linux Linux3b8a1e1f4e4071a62b20374028744e8cc8310d48Vendor (CNA)
Linux Linux8afd1007ef79898a6e010eaade97097e49405fceVendor (CNA)
Linux Linux9dbf173bd32d5f81b005008b682bfb50aa093455Vendor (CNA)
Linux Linuxd319b83b97b3585550d9ae592dfa78c755b6129eVendor (CNA)
Linux Linuxfb4d57b83356d4bd411b45ede3024e0ff42c9b5eVendor (CNA)
debian:linux6.1.180-1 · 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.

EPSS, last 120 days+1% in 7 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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • 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

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 (7 more)

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

All records