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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98375: xen/netfront: drop RX packets with a short Ethernet header

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: 0.18% (FIRST EPSS).
  • Fixed version: Linux Linux 0542d213253eec18785a24b603b28bd385dfe4a5, 089e58805c452e52179482b1025a8e309a57f801, 236a17caebcff31f75bec5ff4136bde2de944e40; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes.

Low priority for now. Upgrade to Linux Linux 0542d213253eec18785a24b603b28bd385dfe4a5, 089e58805c452e52179482b1025a8e309a57f801, 236a17caebcff31f75bec5ff4136bde2de944e40; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes 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: xen/netfront: drop RX packets with a short Ethernet header handle_incoming_queue() pulls pull_to bytes into the head before calling eth_type_trans(). pull_to is the length of the first RX slot, capped at RX_COPY_THRESHOLD, and that length comes from the backend. Nothing checks it against ETH_HLEN. If the first slot is shorter than ETH_HLEN and more slots follow, the head ends up shorter than an Ethernet header while skb->len is longer, and eth_type_trans() BUG()s in __skb_pull(). If the whole packet is shorter than ETH_HLEN, eth_type_trans() reads the header past the end of the data instead. Pull at least ETH_HLEN, and drop the packet if that fails, which also drops packets too short to hold an Ethernet header. This also checks the return value of the pull, which was ignored.

—No exploit Fix available
Published
Oct 9, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 8th 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 · 0.1%

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  • 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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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

    • 2.6.23affected
    • 0d160211965b79de989cf2d170985abeb8da5ec6 and later · before fd5481dd75ea879c53c17882cbb065ad3bd6b766affected · git
    • 0d160211965b79de989cf2d170985abeb8da5ec6 and later · before 9cb8813d157b4d15103d3b34c635620f36df4173affected · git
    • 0d160211965b79de989cf2d170985abeb8da5ec6 and later · before 57508819da8dc1cf5a2c3b64570aa02cc5ae28b6affected · git
    • 0d160211965b79de989cf2d170985abeb8da5ec6 and later · before 0542d213253eec18785a24b603b28bd385dfe4a5affected · git
    • 0d160211965b79de989cf2d170985abeb8da5ec6 and later · before 236a17caebcff31f75bec5ff4136bde2de944e40affected · git
    • 0d160211965b79de989cf2d170985abeb8da5ec6 and later · before 72d2f54367895d6e236b9857892e2e6b6036e067affected · git
    • 0d160211965b79de989cf2d170985abeb8da5ec6 and later · before e2b721bc30f40ffa7ccc36a56d4e8990b8c0538eaffected · git
    • 0d160211965b79de989cf2d170985abeb8da5ec6 and later · before 089e58805c452e52179482b1025a8e309a57f801affected · git
    • before 2.6.23not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.10-17.2.10-1

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-2026-98373Oct 7, 2026 · mm/hugetlb: preserve mremap address delta when skipping page tables
    0Monitor
  • ← EarlierCVE-2026-98374Oct 7, 2026 · tcp: fix use-after-free of retransmit_skb_hint in tcp_send_synack()
    35Monitor
  • Later →CVE-2026-98376Oct 9, 2026 · bpf: Use array_map_meta_equal for percpu array inner map replacement
    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 Linux0542d213253eec18785a24b603b28bd385dfe4a5Vendor (CNA)
Linux Linux089e58805c452e52179482b1025a8e309a57f801Vendor (CNA)
Linux Linux236a17caebcff31f75bec5ff4136bde2de944e40Vendor (CNA)
Linux Linux57508819da8dc1cf5a2c3b64570aa02cc5ae28b6Vendor (CNA)
Linux Linux72d2f54367895d6e236b9857892e2e6b6036e067Vendor (CNA)
Linux Linux9cb8813d157b4d15103d3b34c635620f36df4173Vendor (CNA)
Linux Linuxe2b721bc30f40ffa7ccc36a56d4e8990b8c0538eVendor (CNA)
Linux Linuxfd5481dd75ea879c53c17882cbb065ad3bd6b766Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · 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.

  1. Published
  2. Fix recordedsame day
  3. TodayOct 31, 2026+22 d
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. Exploit maturity— → none
  2. 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