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Back to active CVEs
High · CVSS 8.8CVE-2023-52790

swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMICCVE-2023-52790

Answer in brief

CVE-2023-52790 records a High severity (CVSS 8.8) vulnerability in swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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 Nov 3, 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
3 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). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric6.6Not reported
Linux/Linuxgeneric>=79636caad3618e2b38457f6e298c9b31ba82b489 <ce7612496a4ba6068bc68aa1fa9d947dadb4ad9b || >=79636caad3618e2b38457f6e298c9b31ba82b489 <53c87e846e335e3c18044c397cc35178163d7827ce7612496a4ba6068bc68aa1fa9d947dadb4ad9b, 53c87e846e335e3c18044c397cc35178163d7827

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to ce7612496a4ba6068bc68aa1fa9d947dadb4ad9b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    May 21, 2024

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 4, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC Limit the free list length to the size of the IO TLB. Transient pool can be smaller than IO_TLB_SEGSIZE, but the free list is initialized with the assumption that the total number of slots is a multiple of IO_TLB_SEGSIZE. As a result, swiotlb_area_find_slots() may allocate slots past the end of a transient IO TLB buffer.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Monitoring Plugins check_icmp: -H argument count overflow leads in setuid-root binaryAlso CWE-787

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787
Source
CVE List V5
Source checked
Nov 3, 2026
References
2 linked sources
Open source record