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CVE-2023-52801

iommufd: Fix missing update of domains_itree after splitting iopt_area

HIGH
8.8
CVSS Score
Published: May 21, 2024 at 03:31 PM UTC
Updated: August 5, 2026 at 10:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.2 ≤ v < 6.5.136.2 ≤ v < 6.6.36.2 ≤ v < 6.76.6 ≤ v < 6.6.351fe6141f0f651fe6141f0f64ae0bbc096a41a07572273e8c0ef6..26.2
Vendor states this is fixed in 836db2e7e456 (fixed)
Vendor states this is fixed in 836db2e7e4565d8218923b3552304a1637e2f28d (fixed)
Vendor states this is fixed in e7250ab7ca49 (fixed)
Vendor states this is fixed in e7250ab7ca4998fe026f2149805b03e09dc32498 (fixed)
Vendor states this is fixed in fcb32111f01d (fixed)
Vendor states this is fixed in fcb32111f01ddf3cbd04644cde1773428e31de6a (fixed)
Vendor states this is fixed in 6.2 (unaffected)
Vendor states this is fixed in 6.5.13 (unaffected)
Vendor states this is fixed in 6.6.3 (unaffected)
Vendor states this is fixed in 6.7 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/836db2e7e4565d8218923b3552304a1637e2f28d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e7250ab7ca4998fe026f2149805b03e09dc32498
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/fcb32111f01ddf3cbd04644cde1773428e31de6a

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-284

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