CVE-2026-68127Network attack vector

Kernel memory corruption via stale IPv6 header pointer

Published Aug 10, 2026 · Updated Aug 10, 2026

Use-after-free in the Linux kernel ILA subsystem allows remote attackers to corrupt kernel memory via crafted IPv6 packets. ila_csum_adjust_transport() caches an IPv6-header pointer before pskb_may_pull(), which can reallocate the skb head, then reads and later writes through the dangling pointer. A CAP_NET_ADMIN-created ILA adj-transport route or receive mapping is required; after configuration, unauthenticated packets trigger slab use-after-free, kernel memory corruption, or a crash.

CVSS severity9.8
Critical
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel ILA subsystem allows remote attackers to corrupt kernel memory via crafted IPv6 packets. ila_csum_adjust_transport() caches an IPv6-header pointer before pskb_may_pull(), which can reallocate the skb head, then reads and later writes through the dangling pointer. A CAP_NET_ADMIN-created ILA adj-transport route or receive mapping is required; after configuration, unauthenticated packets trigger slab use-after-free, kernel memory corruption, or a crash.

The record

CVE
CVE-2026-68127
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-825, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=33f11d16142b06588eedfc1dd8cf93790979a712 <472aba2603ca74c4f7722cb0c0296942b0776b8d
  2. Affected versionversion=33f11d16142b06588eedfc1dd8cf93790979a712 <7097a0280b178237265681be66d1bef11d15894b
  3. Affected versionversion=33f11d16142b06588eedfc1dd8cf93790979a712 <896a9512d0d83c2a4b357e5585b7b62a8e3f95c1
  4. Affected versionversion=33f11d16142b06588eedfc1dd8cf93790979a712 <92d3817649df2b0b6a008a686c8275c88d7ef594
  5. Affected versionversion=33f11d16142b06588eedfc1dd8cf93790979a712 <c6a13ae00dab3a1a8c7cf2f843f0fc9e8d4b0ccc
  6. Affected versionversion=4.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=33f11d16142b06588eedfc1dd8cf93790979a712 <472aba2603ca74c4f7722cb0c0296942b0776b8d; version=33f11d16142b06588eedfc1dd8cf93790979a712 <7097a0280b178237265681be66d1bef11d15894b; version=33f11d16142b06588eedfc1dd8cf93790979a712 <896a9512d0d83c2a4b357e5585b7b62a8e3f95c1; version=33f11d16142b06588eedfc1dd8cf93790979a712 <92d3817649df2b0b6a008a686c8275c88d7ef594; version=33f11d16142b06588eedfc1dd8cf93790979a712 <c6a13ae00dab3a1a8c7cf2f843f0fc9e8d4b0ccc; version=4.5

Published CVSS scores

6.5Amazon LinuxCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
9.8Linux kernel CVE teamCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-825Expired Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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