CVE-2026-53203: Buffer Overflow (CVSS 7.1)

Description

In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Add buffer overflow check in MS get_info_ioctl Add validation that the info size returned from the metric stream info query is not exceeded when checked against the allocated buffer size. If the firmware returns a size larger than the buffer, reject the operation with -EOVERFLOW instead of proceeding with an incorrect buffer copy.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS — Exploit Prediction

0.0015

Probability of exploitation

0.05%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-120 CWE-120

References

Other References

https://git.kernel.org/stable/c/4e5047cc94bea1cc7b670b7f503358e9af0542df https://git.kernel.org/stable/c/d3c12ed33e8923f3090909a1738f3e59292996a6 https://git.kernel.org/stable/c/fa598556ecef412edcb391f144b7642e18fdfd45 https://git.kernel.org/stable/c/fb176425837693f50c5c9fc8db6fbb04af22bd0a https://access.redhat.com/security/cve/CVE-2026-53203 https://bugzilla.redhat.com/show_bug.cgi?id=2492798 https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53203.json

Frequently Asked Questions

What is CVE-2026-53203? +

In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Add buffer overflow check in MS get_info_ioctl Add validation that the info size returned from the metric stream info query is not exceeded when checked against the allocated buffer size. If the firmware returns a size larger than the buffer, reject the operation with -EOVERFLOW instead of proceeding with an incorrect buffer copy. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-53203? +

CVE-2026-53203 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0015, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-53203? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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