8.6

CVE-2025-38608: debian debian_linux Use of Uninitialized Resource

CVSS: 8.6v3.1HighModified
AliasesUBUNTU-CVE-2025-38608DEBIAN-CVE-2025-38608
Published 19-08-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-38608 is a high (CVSS 8.6) Use of Uninitialized Resource vulnerability in debian debian_linux. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 34.4% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (CVE.org)
EPSS score
0.41%
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 112 · Related 108
DLA-4327-1DLA-4328-1MGASA-2025-0234MGASA-2025-0235OPENSUSE-SU-2025:20081-1SUSE-SU-2025:03272-1

Showing 100 of 112. Use Open JSON for the complete list.

Timeline

  1. 19-08-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls When sending plaintext data, we initially calculated the corresponding ciphertext length. However, if we later reduced the plaintext data length via socket policy, we failed to recalculate the ciphertext length. This results in transmitting buffers containing uninitialized data during ciphertext transmission. This causes uninitialized bytes to be appended after a complete "Application Data" packet, leading to errors on the receiving end when parsing TLS record.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

+0.02 pp

From 0.40% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.41%

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

Ubuntu143 products
  • linuxAll versions (No fix recorded) | < 5.15.0-163.173 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1097.104 | < 6.8.0-1046.49
  • 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≥ 7246d8ed4dcce23f7509949a77be15fa9f0e3d28, < 6ba20ff3cdb96a908b9dc93cf247d0b087672e7c | ≥ 7246d8ed4dcce23f7509949a77be15fa9f0e3d28, < 849d24dc5aed45ebeb3490df429356739256ac40 | ≥ 7246d8ed4dcce23f7509949a77be15fa9f0e3d28, < 73fc5d04009d3969ff8e8574f0fd769f04124e59 | ≥ 7246d8ed4dcce23f7509949a77be15fa9f0e3d28, < 16aca8bb4ad0d8a13c8b6da4007f4e52d53035bb | ≥ 7246d8ed4dcce23f7509949a77be15fa9f0e3d28, < 0e853c1464bcf61207f8b5c32d2ac5ee495e859d | ≥ 7246d8ed4dcce23f7509949a77be15fa9f0e3d28, < ee03766d79de0f61ea29ffb6ab1c7b196ea1b02e | ≥ 7246d8ed4dcce23f7509949a77be15fa9f0e3d28, < 90d6ef67440cec2a0aad71a0108c8f216437345c | ≥ 7246d8ed4dcce23f7509949a77be15fa9f0e3d28, < 1e480387d4b42776f8957fb148af9d75ce93b96d | ≥ 7246d8ed4dcce23f7509949a77be15fa9f0e3d28, < 178f6a5c8cb3b6be1602de0964cd440243f493c9 | 5.0
  • linux_kernel≥ 5.0, < 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

3 vendors · 147 products

References

47 links
Show all 47 references