5.5

CVE-2026-53150: linux Integer Underflow (Wrap or Wraparound)

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-53150DEBIAN-CVE-2026-53150CGA-4jmj-frj6-5wm5
Published 25-06-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-53150 is a medium (CVSS 5.5) Integer Underflow (Wrap or Wraparound) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 37 · Related 37
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. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Reject zero-length property entries in validator tb_property_entry_valid() accepts entries with length == 0 for DIRECTORY, DATA, and TEXT types. A zero-length TEXT entry passes validation but causes an underflow in the null-termination logic: property->value.text[property->length * 4 - 1] = '\0'; When property->length is 0 this writes to offset -1 relative to the allocation. Reject zero-length entries early in the validator since they have no valid representation in the XDomain property protocol.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.13%

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)
Chainguard11 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-6.18< 6.18.38-r0
  • linux-gcp-6.18-bootc-boot-installed< 6.18.38-r0
Linux2 products
  • linux≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 35d6c9252a152e756768a26dbf216b9dd9dd8e92 | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 99d9dbad1463afb510d42c9714f846361d1b726d | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 5f56bc6bddffe8710ba0ba8844023b5a44ca90e4 | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < ca11e7da4fba4b394f69e16448f4463c44c84de6 | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 2e0ddac549ebd713eb9f4a15b6496e3440a17d8b | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 3b6e68cb97f725385010264a873e14a3921b6b8a | ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < cff8eb65d1eafe7793e54b4d0cf6bf831644630b | 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 · 181 products

References

37 links
Show all 37 references