7.5

CVE-2025-71150: linux

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2025-71150DEBIAN-CVE-2025-71150
Published 23-01-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2025-71150 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.28%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 34 · Related 33
DLA-4476-1DSA-6126-1DSA-6127-1USN-8177-1USN-8177-2USN-8179-1

Timeline

  1. 23-01-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix refcount leak when invalid session is found on session lookup When a session is found but its state is not SMB2_SESSION_VALID, It indicates that no valid session was found, but it is missing to decrement the reference count acquired by the session lookup, which results in a reference count leak. This patch fixes the issue by explicitly calling ksmbd_user_session_put to release the reference to the session.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

+0.03 pp

From 0.25% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.28%

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

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-110.110 | < 6.17.0-22.22
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1052.55 | < 6.17.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 2107ab40629aeabbec369cf34b8cf0f288c3eb1b, < 11fe566b442e3bc2774191740fd377739a87a1c0 | ≥ 37a0e2b362b3150317fb6e2139de67b1e29ae5ff, < 0fb87b28cafae71e9c8248432cc3a6a1fd759efc | ≥ 450a844c045ff0895d41b05a1cbe8febd1acfcfd, < e54fb2a4772545701766cba08aab20de5eace8cd | ≥ a39e31e22a535d47b14656a7d6a893c7f6cf758c, < 02e06785e85b4bd86ef3d23b7c8d87acc76773d5 | ≥ b95629435b84b9ecc0c765995204a4d8a913ed52, < 8cabcb4dd3dc85dd83a37d26efcc59a66a4074d7 | ≥ b95629435b84b9ecc0c765995204a4d8a913ed52, < cafb57f7bdd57abba87725eb4e82bbdca4959644 | ≥ 5.15.176, < 5.15.203 | ≥ 6.1.121, < 6.1.160 | ≥ 6.6.67, < 6.6.120 | ≥ 6.12.6, < 6.12.64 | 6.13
  • linux_kernelEOL≥ 5.15.176, < 5.16 | ≥ 6.1.121, < 6.1.160 | ≥ 6.6.67, < 6.6.120 | ≥ 6.12.6, < 6.12.64 | ≥ 6.13.1, < 6.18.3 | 6.13 | 6.13:rc3 | 6.13:rc4 | 6.13:rc5 | 6.13:rc6 | 6.13:rc7 | 6.19:rc1
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.3-1

3 vendors · 160 products

References

43 links
Show all 43 references