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TI-2026-69878 Aliases CVE-2026-98375GHSA-6q97-4p5q-xv9v

Linux xen/netfront driver can read past short Ethernet headers

Priority LOW 22Published · Updated

Key facts

Attack vector
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Privileges required
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User interaction
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Attack complexity
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Impact type
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Confidentiality · integrity · availability
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Fix status
Partial Red Hat: 7 without a fix

No CVSS vector from any source. Fix status from CNA and Red Hat.

Summary

The Linux kernel xen/netfront network driver is affected from 2.6.23 before the fixed releases. The driver takes the first receive slot length from the Xen backend without checking it against the Ethernet header size, so a short slot leaves the packet head shorter than an Ethernet header. A malicious or faulty Xen backend can trigger a kernel BUG() or an out-of-bounds read.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

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.

Why it matters now

EPSS 0.00216 12th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.273, 5.15.224, 6.1.191 +5Red Hat: 7 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux2.6.23 and later5.10.273, 5.15.224, 6.1.191, 6.6.160, 6.12.113, 6.18.56, 7.2.10, 7.3Patch availableCNA
  • Linux VendorLinux Affected 2.6.23 and later Fixed in 5.10.273, 5.15.224, 6.1.191, 6.6.160, 6.12.113, 6.18.56, 7.2.10, 7.3 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*——Linux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

Update the Linux kernel to 5.10.273, 5.15.224, 6.1.191, 6.6.160, 6.12.113, 6.18.56, 7.2.10 or 7.3. Red Hat lists Red Hat Enterprise Linux 6 as having no fix planned and Red Hat Enterprise Linux 7, 8, 9, 10 and OpenShift Container Platform 4 and 5 as having no fix available.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA Linux (Linux) Fixed in 5.10.273, 5.15.224, 6.1.191, 6.6.160, 6.12.113, 6.18.56, 7.2.10, 7.3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 5AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-98375
  2. 2026-10-09 Alias added: GHSA-6q97-4p5q-xv9v
  3. 2026-10-11 Fix available: Linux/[email protected], Linux/[email protected], Linux/Linux@72d2f54367895d6e236b9857892e2e6b6036e067 +1 · CNA
  4. 2026-10-11 2 new references · CNA
  5. 2026-10-11 Affected versions changed · Red Hat
  6. 2026-10-11 CVSS score added · Red Hat
  7. 2026-10-16 Fix available: Linux/Linux@236a17caebcff31f75bec5ff4136bde2de944e40, Linux/[email protected] · CNA
  8. 2026-10-16 1 new reference · CNA
  9. 2026-10-19 Fix available: Linux/[email protected] · CNA
  10. 2026-10-21 Fix available: Linux/Linux@0542d213253eec18785a24b603b28bd385dfe4a5, Linux/[email protected] · CNA
  11. 2026-10-21 1 new reference · CNA
  12. 2026-10-30 Affected versions changed · Red Hat
  13. 2026-10-30 Fix available: Linux/[email protected], Linux/[email protected], Linux/Linux@57508819da8dc1cf5a2c3b64570aa02cc5ae28b6 +3 · CNA
  14. 2026-10-30 3 new references · CNA
  15. 2026-11-01 Affected versions changed · Red Hat

References

Other 8

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
See all 21727 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences