CVE-2025-22045

Aliases:UBUNTU-CVE-2025-22045DEBIAN-CVE-2025-22045
Advisory lineage Upstream: 0 Downstream: 62
Modified
Published: 16 Apr 2025, 14:12
Last modified:05 Aug 2026, 11:56

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.24% LOW
0% probability +0.20%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

16 Apr 2025, 14:12
Published
Vulnerability first disclosed
05 Aug 2026, 11:56
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs On the following path, flush_tlb_range() can be used for zapping normal PMD entries (PMD entries that point to page tables) together with the PTE entries in the pointed-to page table: collapse_pte_mapped_thp pmdp_collapse_flush flush_tlb_range The arm64 version of flush_tlb_range() has a comment describing that it can be used for page table removal, and does not use any last-level invalidation optimizations. Fix the X86 version by making it behave the same way. Currently, X86 only uses this information for the following two purposes, which I think means the issue doesn't have much impact: - In native_flush_tlb_multi() for checking if lazy TLB CPUs need to be IPI'd to avoid issues with speculative page table walks. - In Hyper-V TLB paravirtualization, again for lazy TLB stuff. The patch "x86/mm: only invalidate final translations with INVLPGB" which is currently under review (see <https://lore.kernel.org/all/20241230175550.4046587-13-riel@surriel.com/>) would probably be making the impact of this a lot worse.

CVSS Metrics

  • v4.0•MEDIUM•Score: 5.8CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.24%• Percentile: 15%

Affected Systems

  • debian•linux

    < 5.10.237-1 | < 6.1.135-1 | < 6.12.25-1 | < 6.12.25-1

  • debian•linux-6.1

    < 6.1.137-1~deb11u1

  • ubuntu•linux

    < 5.4.0-218.238 | < 5.15.0-142.152 | < 6.8.0-86.87

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    < 5.4.0-1147.157 | < 5.15.0-1086.93 | < 6.8.0-1041.43

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.15

    < 5.15.0-1086.93~20.04.1

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1147.157~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.2

    all

  • ubuntu•linux-aws-6.5

    all

  • ubuntu•linux-aws-6.8

    < 6.8.0-1041.43~22.04.1

  • ubuntu•linux-aws-fips

    < 5.4.0-1147.157+fips1 | all | < 5.15.0-1086.93+fips1 | < 6.8.0-1041.43+fips1

  • ubuntu•linux-azure

    all | < 5.4.0-1152.159 | < 5.15.0-1091.100 | < 6.8.0-1041.47

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.15

    < 5.15.0-1091.100~20.04.1

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1152.159~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.11

    < 6.11.0-1018.18~24.04.1

  • ubuntu•linux-azure-6.2

    all

  • ubuntu•linux-azure-6.5

    all

  • ubuntu•linux-azure-6.8

    < 6.8.0-1041.47~22.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all | all | all

  • ubuntu•linux-azure-fde-5.19

    all

  • ubuntu•linux-azure-fde-6.2

    all

  • ubuntu•linux-azure-fips

    < 5.4.0-1153.160+fips1 | all | < 5.15.0-1091.100+fips1 | < 6.8.0-1044.50+fips1

  • ubuntu•linux-azure-nvidia

    < 6.8.0-1029.32

  • ubuntu•linux-bluefield

    all | < 5.4.0-1106.113 | < 5.15.0-1069.71 | < 6.8.0-1012.16

  • ubuntu•linux-fips

    < 5.4.0-1121.131 | all | < 5.15.0-142.152+fips1 | < 6.8.0-86.87+fips1

  • ubuntu•linux-gcp

    all | < 5.4.0-1150.159 | < 5.15.0-1085.94 | < 6.8.0-1042.45

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.15

    < 5.15.0-1085.94~20.04.1

  • ubuntu•linux-gcp-5.19

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1150.159~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-6.11

    < 6.11.0-1016.16~24.04.1

  • ubuntu•linux-gcp-6.2

    all

  • ubuntu•linux-gcp-6.5

    all

  • ubuntu•linux-gcp-6.8

    < 6.8.0-1042.45~22.04.1

  • ubuntu•linux-gcp-fips

    < 5.4.0-1150.159+fips1 | all | < 5.15.0-1085.94+fips1 | < 6.8.0-1042.45+fips1

Showing first 50 affected entries in server-rendered view.

References (53)