7.1

CVE-2026-53146: linux Out-of-bounds Read

CVSS: 7.1v3.1HighModified
AliasesUBUNTU-CVE-2026-53146DEBIAN-CVE-2026-53146CGA-39g9-9gvp-5x59
Published 25-06-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-53146 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.5% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 38 · Related 38
MGASA-2026-0312OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Limit XDomain response copy to actual frame size tb_xdomain_copy() copies req->response_size bytes from the received packet buffer regardless of the actual frame size. When a short response arrives, this reads past the valid frame data in the DMA pool buffer into stale contents from previous transactions. Use the minimum of frame size and expected response size for the copy length.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

+0.02 pp

From 0.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu167 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-146.146 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1066.69 | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard12 products
  • linux-aws-6.12< 6.12.95-r0
  • linux-aws-6.18< 6.18.38-r0
  • linux-azure-6.18< 6.18.38-r0
  • linux-gcp-6.12< 6.12.95-r0
  • linux-gcp-6.18< 6.18.38-r0
Linux2 products
  • linux≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < c55da494dfb445fb28df3a9d293c2be6a299cd01 | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 7720654b4842bcdfeb64bc002f6186041849e1e7 | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 033dfa63bf6be2653441a1dccae4a8313a91bb9d | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < fc261397295b8ad0654cec747b0ec25ea0011995 | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cb | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < b5daa920f44cb582272fc9bfaeb67408776cbaef | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4 | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8eb | 4.15
  • linux_kernel≥ 4.15, < 5.10.259 | ≥ 5.11, < 5.15.210 | ≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.94 | ≥ 6.13, < 6.18.36 | ≥ 6.19, < 7.0.13 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6 | 7.1:rc7
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.13-1

4 vendors · 182 products

References

40 links
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