CVE-2023-52801: linux kernel Access Control Flaw — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix missing update of domains_itree after splitting iopt_area In iopt_area_split(), if the original iopt_area has filled a domain and is linked to domains_itree, pages_nodes have to be properly reinserted. Otherwise the domains_itree becomes corrupted and we will UAF.

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CVSS v3.1 Score

9.1

CRITICAL

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

Weakness Type (CWE)

CWE-284 CWE-284

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.2 — 6.5.13
linux	linux_kernel	6.6 — 6.6.3

References

Advisories & Patches

https://git.kernel.org/stable/c/836db2e7e4565d8218923b3552304a1637e2f28d https://git.kernel.org/stable/c/e7250ab7ca4998fe026f2149805b03e09dc32498 https://git.kernel.org/stable/c/fcb32111f01ddf3cbd04644cde1773428e31de6a https://git.kernel.org/stable/c/836db2e7e4565d8218923b3552304a1637e2f28d https://git.kernel.org/stable/c/e7250ab7ca4998fe026f2149805b03e09dc32498 https://git.kernel.org/stable/c/fcb32111f01ddf3cbd04644cde1773428e31de6a

Frequently Asked Questions

What is CVE-2023-52801? +

In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix missing update of domains_itree after splitting iopt_area In iopt_area_split(), if the original iopt_area has filled a domain and is linked to domains_itree, pages_nodes have to be properly reinserted. Otherwise the domains_itree becomes corrupted and we will UAF. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2023-52801? +

CVE-2023-52801 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2023-52801? +

CVE-2023-52801 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-52801? +

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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