7.8

CVE-2025-38618: debian debian_linux Use After Free

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2025-38618DEBIAN-CVE-2025-38618
Published 22-08-2025Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2025-38618 is a high (CVSS 7.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.5% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.17%
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 141 · Related 136
DLA-4327-1DLA-4328-1MGASA-2025-0234MGASA-2025-0235OPENSUSE-SU-2025:20081-1SUSE-SU-2025:03204-1

Showing 100 of 141. Use Open JSON for the complete list.

Timeline

  1. 22-08-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: vsock: Do not allow binding to VMADDR_PORT_ANY It is possible for a vsock to autobind to VMADDR_PORT_ANY. This can cause a use-after-free when a connection is made to the bound socket. The socket returned by accept() also has port VMADDR_PORT_ANY but is not on the list of unbound sockets. Binding it will result in an extra refcount decrement similar to the one fixed in fcdd2242c023 (vsock: Keep the binding until socket destruction). Modify the check in __vsock_bind_connectible() to also prevent binding to VMADDR_PORT_ANY.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

0.00 pp

From 0.17% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.17%

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

Ubuntu145 products
  • linuxAll versions (No fix recorded) | < 4.4.0-273.307 | < 4.15.0-242.254 | < 5.4.0-222.242 | < 5.15.0-157.167 | < 6.8.0-85.85
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1148.154 | < 4.4.0-1186.201 | < 4.15.0-1185.198 | < 5.4.0-1151.161 | < 5.15.0-1093.100 | < 6.8.0-1040.42
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.148-1 | < 6.12.43-1 | < 6.16.3-1
  • debian_linuxEOL11.0
Linux2 products
  • linux≥ d021c344051af91f42c5ba9fdedc176740cbd238, < c04a2c1ca25b9b23104124d3b2d349d934e302de | ≥ d021c344051af91f42c5ba9fdedc176740cbd238, < d1a5b1964cef42727668ac0d8532dae4f8c19386 | ≥ d021c344051af91f42c5ba9fdedc176740cbd238, < cf86704798c1b9c46fa59dfc2d662f57d1394d79 | ≥ d021c344051af91f42c5ba9fdedc176740cbd238, < f138be5d7f301fddad4e65ec66dfc3ceebf79be3 | ≥ d021c344051af91f42c5ba9fdedc176740cbd238, < 44bd006d5c93f6a8f28b106cbae2428c5d0275b7 | ≥ d021c344051af91f42c5ba9fdedc176740cbd238, < 32950b1907919be86a7a2697d6f93d57068b3865 | ≥ d021c344051af91f42c5ba9fdedc176740cbd238, < 8f01093646b49f6330bb2d36761983fd829472b1 | ≥ d021c344051af91f42c5ba9fdedc176740cbd238, < d73960f0cf03ef1dc9e96ec7a20e538accc26d87 | ≥ d021c344051af91f42c5ba9fdedc176740cbd238, < aba0c94f61ec05315fa7815d21aefa4c87f6a9f4 | 3.9
  • linux_kernel≥ 3.9, < 5.4.297 | ≥ 5.5, < 5.10.241 | ≥ 5.11, < 5.15.190 | ≥ 5.16, < 6.1.148 | ≥ 6.2, < 6.6.102 | ≥ 6.7, < 6.12.42 | ≥ 6.13, < 6.15.10 | ≥ 6.16, < 6.16.1 | 6.17:rc1

3 vendors · 149 products

References

60 links
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