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CVE-2026-68144

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: phonet: pep: fix use-after-free in pep_get_sb() pep_get_sb() doesn't consider that pskb_may_pull() might have relocated the skb…

Published Aug 10, 2026EPSS 0.54%

Overview

CVE-2026-68144 is a critical-severity vulnerability. It was published on August 10, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

phonet: pep: fix use-after-free in pep_get_sb()

pep_get_sb() doesn't consider that pskb_may_pull() might have relocated

the skb data, and continue to access the older pointer, causing UAF.

Reproduced under KASAN:

BUG: KASAN: slab-use-after-free in pep_get_sb+0x234/0x3b0

Read of size 1 at addr ff11000105510f50 by task repro/157

pep_get_sb+0x234/0x3b0

pipe_handler_do_rcv+0x5f7/0xa10

pep_do_rcv+0x203/0x410

__sk_receive_skb+0x471/0x4a0

phonet_rcv+0x5b3/0x6c0

__netif_receive_skb+0xcc/0x1d0

Refetch the header with skb_header_pointer() after pskb_may_pull(), so

the possibly stale pointer is no longer dereferenced. There are better

ways to solve this, but, this is the less instrusive one.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0f71f852a96af9685858ce59fda34ecbf85c283dRefgit.kernel.org/stable/c/17f78c0c0d41d738ee236eb6e841e39395188054Refgit.kernel.org/stable/c/1d81e19fc57a5ee55b4497d01bc0510d76fb9578Refgit.kernel.org/stable/c/25e3641beb51333bfbb155af2fd2573a61113af2Refgit.kernel.org/stable/c/8d931a75a38b9bb584a4071f5ebbd52755fc35eeRefgit.kernel.org/stable/c/a48a889b60f73edb0399a8b08284a2ab0bd0295fRefgit.kernel.org/stable/c/c4a52cb4da8d57d060b1d52085d25147a238dac2Refgit.kernel.org/stable/c/df198743859fefba2f824115f8151dd62d7ad6d8

How CyberStrike helps

Frequently asked questions

What is CVE-2026-68144?

CVE-2026-68144 is a critical-severity vulnerability. It was published on August 10, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-68144?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-68144?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-68144?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-68144 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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