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CVE-2026-74263· NVD / CVE Program· CNA Linux

net: wwan: t7xx: check skb_clone in control TX

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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).
  • Fixed version: Linux Linux 05f789fa90d95d5771230e78453cedff2486039d, 112490467586146d323cb7230b1d72137e36900c, 4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095.

Low priority for now. Upgrade to Linux Linux 05f789fa90d95d5771230e78453cedff2486039d, 112490467586146d323cb7230b1d72137e36900c, 4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095 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: net: wwan: t7xx: check skb_clone in control TX t7xx_port_ctrl_tx() clones each skb fragment before passing it to the port transmit path. The clone is used immediately to set cloned->len, so an skb_clone() failure results in a NULL pointer dereference. Check the clone before using it. If previous fragments were already queued, preserve the driver's existing partial-write behavior by returning the number of bytes submitted so far.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 17, 2026
EPSS
0.2% · 10th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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

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When you'll hear from us

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  • 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

    • 6.4affected
    • 36bd28c1cb0dbf48645cfe43159907fb3253b33a and later · before 7edd4db82f9429591de10be4c904c817f12ba029affected · git
    • 36bd28c1cb0dbf48645cfe43159907fb3253b33a and later · before 112490467586146d323cb7230b1d72137e36900caffected · git
    • 36bd28c1cb0dbf48645cfe43159907fb3253b33a and later · before f7aebaee2961bfcb86f282202d3dbd9b69db1a7caffected · git
    • 36bd28c1cb0dbf48645cfe43159907fb3253b33a and later · before 4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095affected · git
    • 36bd28c1cb0dbf48645cfe43159907fb3253b33a and later · before 05f789fa90d95d5771230e78453cedff2486039daffected · git
    • before 6.4not affected · semver
    • 6.6.145 and later · up to and including 6.6.*not affected · semver
    • 6.12.97 and later · up to and including 6.12.*not affected · semver
    • 6.18.40 and later · up to and including 6.18.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
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-2026-72501Aug 15, 2026 · RDMA/bnxt_re: Initialize dpi variable to zero
    0Monitor
  • ← EarlierCVE-2026-74261Aug 15, 2026 · ALSA: seq: avoid stale FIFO cells during resize
    0Monitor
  • Later →CVE-2026-74265Aug 15, 2026 · net: mana: initialize gdma queue id to INVALID_QUEUE_ID
    0Monitor

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 Linux05f789fa90d95d5771230e78453cedff2486039dVendor (CNA)
Linux Linux112490467586146d323cb7230b1d72137e36900cVendor (CNA)
Linux Linux4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095Vendor (CNA)
Linux Linux7edd4db82f9429591de10be4c904c817f12ba029Vendor (CNA)
Linux Linuxf7aebaee2961bfcb86f282202d3dbd9b69db1a7cVendor (CNA)
debian:linux6.12.100-1 · Debian:13Package 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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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 (4 more)

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

All records