7.8

CVE-2025-39965: linux

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2025-39965DEBIAN-CVE-2025-39965
Published 13-10-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-39965 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 8.8% 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
0.20%
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 31 · Related 29
MGASA-2025-0309MGASA-2025-0310OPENSUSE-SU-2025:20091-1SUSE-SU-2025:21040-1SUSE-SU-2025:21052-1SUSE-SU-2025:21056-1

Timeline

  1. 13-10-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: xfrm_alloc_spi shouldn't use 0 as SPI x->id.spi == 0 means "no SPI assigned", but since commit 94f39804d891 ("xfrm: Duplicate SPI Handling"), we now create states and add them to the byspi list with this value. __xfrm_state_delete doesn't remove those states from the byspi list, since they shouldn't be there, and this shows up as a UAF the next time we go through the byspi list.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

0.00 pp

From 0.20% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.20%

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

No weakness data has been published for this record.

Affected systems

Ubuntu106 products
  • linux< 6.8.0-106.106 | < 6.17.0-6.6
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1050.53 | < 6.17.0-1003.3
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 3d8090bb53424432fa788fe9a49e8ceca74f0544, < 0baf92d0b1590b903c1f4ead75e61715e50e8146 | ≥ 2fc5b54368a1bf1d2d74b4d3b8eea5309a653e38, < 9fcedabaae0096f712bbb4ccca6a8538af1cd1c8 | ≥ 29e9158f91f99057dbd35db5e8674d93b38549fe, < a78e55776522373c446f18d5002a8de4b09e6bf7 | ≥ 94f39804d891cffe4ce17737d295f3b195bc7299, < cd8ae32e4e4652db55bce6b9c79267d8946765a9 | c67d4e7a8f90fb6361ca89d4d5c9a28f4e935e47 | ≥ 6.15.11, < 6.16 | ≥ 6.6.103, < 6.6.109 | ≥ 6.12.43, < 6.12.50 | ≥ 6.16.2, < 6.16.10
  • linux_kernel≥ 6.6.103, < 6.6.109 | ≥ 6.12.43, < 6.12.50 | ≥ 6.15.11, < 6.16 | ≥ 6.16.2, < 6.16.10 | 6.17:rc1 | 6.17:rc2 | 6.17:rc3 | 6.17:rc4 | 6.17:rc5 | 6.17:rc6 | 6.17:rc7
Debian1 product
  • linux< 6.12.57-1 | < 6.16.10-1

3 vendors · 109 products

References

19 links
Show all 19 references