iommufd: Fix missing update of domains_itree after splitting iopt_area (CVE-2023-52801) | HOL Guard CVE

High · CVSS 8.8CVE-2023-52801

iommufd: Fix missing update of domains_itree after splitting iopt_area

Answer in brief

CVE-2023-52801 records a High severity (CVSS 8.8) vulnerability in iommufd: Fix missing update of domains_itree after splitting iopt_area. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), linux/linux_kernel (generic), linux/linux_kernel (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 21, 2024Updated Aug 5, 2026Source checked Sep 19, 2026First seen by HOL Aug 4, 2026Material review Aug 5, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.8
Exploitation: Not marked as known exploited
Affected software: 7 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), linux/linux_kernel (generic), linux/linux_kernel (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:linux:linux_kernel::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <836db2e7e4565d8218923b3552304a1637e2f28d \|\| >=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <fcb32111f01ddf3cbd04644cde1773428e31de6a \|\| >=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <e7250ab7ca4998fe026f2149805b03e09dc32498	836db2e7e4565d8218923b3552304a1637e2f28d, fcb32111f01ddf3cbd04644cde1773428e31de6a, e7250ab7ca4998fe026f2149805b03e09dc32498
Linux/Linuxgeneric	6.2	Not reported
linux/linux_kernelgeneric	>=51fe6141f0f6 <836db2e7e456	836db2e7e456
linux/linux_kernelgeneric	>=51fe6141f0f6 <fcb32111f01d	fcb32111f01d
linux/linux_kernelgeneric	>=51fe6141f0f6 <e7250ab7ca49	e7250ab7ca49
linux/linux_kernelgeneric	6..2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, linux/linux_kernel.
Review the reported fix. Update Linux/Linux to 836db2e7e4565d8218923b3552304a1637e2f28d; linux/linux_kernel to 836db2e7e456; linux/linux_kernel to fcb32111f01d; linux/linux_kernel to e7250ab7ca49 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
May 21, 2024
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 4, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.