What’s Vulnerable › Vulnerabilities

CVE-2023-52801: iommufd: Fix missing update of domains_itree after splitting iopt_area

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-21 · updated 2026-08-04
• Weakness: CWE-284

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.

Affected products

• Linux kernel: from 6.2 before 6.5.13; from 6.6 before 6.6.3 — fixed in 6.5.13, 6.6.3

How to fix

Upgrade to a fixed version: Linux kernel 6.5.13, 6.6.3. Check the vendor advisory for mitigations.

References

• 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

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