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Review reviewHigh

CVE-2023-52801

Linux Linux, linux_kernel, linux kernel

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.

CVSS
8.8
EPSS
0.59%
44.9% percentile
CISA KEV
Not listed
Published
2024.05.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.59%
Technical severityCVSS 8.8

Vulnerability overview

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 product and versions

Product
Linux Linux, linux_kernel, linux kernel
Affected versions
>= 51fe6141f0f64ae0bbc096a41a07572273e8c0ef < 836db2e7e4565d8218923b3552304a1637e2f28d, >= 51fe6141f0f64ae0bbc096a41a07572273e8c0ef < fcb32111f01ddf3cbd04644cde1773428e31de6a, >= 51fe6141f0f64ae0bbc096a41a07572273e8c0ef < e7250ab7ca4998fe026f2149805b03e09dc32498, >= 6.2, >= 51fe6141f0f6 < 836db2e7e456, >= 51fe6141f0f6 < fcb32111f01d, >= 51fe6141f0f6 < e7250ab7ca49, >= 6..2, >= 6.2 < 6.5.13, >= 6.6 < 6.6.3
Fixed versions
6.5.13, 6.6.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux_kernel, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
CWE-284