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CVE-2026-98155

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Address potential out-of-bounds read in resp_worker() Although 'commit 2feec5ae5df7 ("accel/qaic: Handle DBC deacti…

Published Sep 25, 2026linuxCWE-125EPSS 0.12%

Overview

CVE-2026-98155 is a high-severity vulnerability affecting linux linux_kernel. It was published on September 25, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

accel/qaic: Address potential out-of-bounds read in resp_worker()

Although 'commit 2feec5ae5df7 ("accel/qaic: Handle DBC deactivation if the

owner went away")' fixes the scenario it was intended for by walking the

message and only decoding QAIC_TRANS_DEACTIVATE_FROM_DEV, if present, it

skipped over the bounds checking code that is included in decode_message().

This could lead to issues such as reading past the slab allocation's end,

infinite loops or kernel panics. For those issues to happen, a malformed

wire message is needed to be sent from the device.

Instead of duplicating the bounds checking code already present in

decode_message(), use the function inside resp_worker().

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel>= 6.6.134, < 6.6.158Affected

References

Refgit.kernel.org/stable/c/12deeade460d47031267256ba07add51cc7eabd0Refgit.kernel.org/stable/c/5807a65f301b6c0e73a2dc03dd6f5e80a2861b72Refgit.kernel.org/stable/c/ab243f74ab4084ca5c8dec608cb5b0deb27db067Refgit.kernel.org/stable/c/c72e81ee46bdd4c221114d6e9515e9b4647616d7Refgit.kernel.org/stable/c/f4b64488f3deca63f7fbc7d7c3835b2e668003f9

How CyberStrike helps

Frequently asked questions

What is CVE-2026-98155?

CVE-2026-98155 is a high-severity vulnerability affecting linux linux_kernel. It was published on September 25, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-98155?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-98155?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2026-98155?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98155 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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