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TI-2026-18425 Aliases CVE-2026-22988GHSA-5fwh-qcfv-38cc

arp: do not assume dev_hard_header() does not change skb->head

Priority LOW 33Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: arp: do not assume dev_hard_header() does not change skb->head arp_create() is the only dev_hard_header() caller making assumption about skb->head being unchanged. A recent commit broke this assumption. Initialize @arp pointer after dev_hard_header() call.

Why it matters now

EPSS 0.00143 3rd percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.161, 6.6.121, 6.12.66 +1Red Hat: 1 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.1.160 to before 6.1.161; 6.6.120 to before 6.6.121; 6.12.64 to before 6.12.66; 6.18.4 to before 6.18.66.1.161, 6.6.121, 6.12.66, 6.18.6Patch availableCNA
  • Linux VendorLinux Affected 6.1.160 to before 6.1.161; 6.6.120 to before 6.6.121; 6.12.64 to before 6.12.66; 6.18.4 to before 6.18.6 Fixed in 6.1.161, 6.6.121, 6.12.66, 6.18.6 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.12.64 to before 6.12.66; 6.18.4 to before 6.18.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.1.160:*:*:*:*:*:*:*6.1.160VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.6.120:*:*:*:*:*:*:*6.6.120VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*6.19 rc4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.12.64 to before 6.12.66; 6.18.4 to before 6.18.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.1.160:*:*:*:*:*:*:* Versions 6.1.160 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.6.120:*:*:*:*:*:*:* Versions 6.6.120 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:* Versions 6.19 rc4 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.161, 6.6.121, 6.12.66, 6.18.6

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-22988
  2. 2026-10-03 Alias added: GHSA-5fwh-qcfv-38cc

References

Patch 7

  • 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-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
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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