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CVE-2026-72298

8.4 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post() qrtr_endpoint_post() validates an incoming packet with if (!si…

Published Aug 15, 2026EPSS 0.18%

Overview

CVE-2026-72298 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()

qrtr_endpoint_post() validates an incoming packet with

if (!size || len != ALIGN(size, 4) + hdrlen)

goto err;

where size comes from the wire. On 32-bit, size_t is 32 bits and

ALIGN(size, 4) wraps to 0 for size >= 0xfffffffd, so the check

passes and skb_put_data(skb, data + hdrlen, size) writes past the

hdrlen-sized skb and oopses the kernel. 64-bit is unaffected.

This is the 32-bit residual of ad9d24c9429e2 ("net: qrtr: fix OOB

Read in qrtr_endpoint_post"), which fixed only the 64-bit case.

Reject any size that cannot fit the buffer before the ALIGN.

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/20054869770c7df060c5ecee3e8bbf9029c47191Refgit.kernel.org/stable/c/22100a8f73d4ae4f17697dae93d4e2e1d283a6ecRefgit.kernel.org/stable/c/242408b5b763c01288adf3113cbce84378a76e1aRefgit.kernel.org/stable/c/3665e644ea081c4624a1637023b0de3b29f4ae04Refgit.kernel.org/stable/c/689b7267f8632b4661879dc323e26ebb60978afbRefgit.kernel.org/stable/c/7f72c285f6d3bf63968a0344beee8ab1b370198bRefgit.kernel.org/stable/c/b609f7f46916c6b05585ca82455077198a23770fRefgit.kernel.org/stable/c/d0597074e99731fdad5593e4f6d056a3866f2cab

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72298?

CVE-2026-72298 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-72298?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-72298?

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-2026-72298?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72298 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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