5.5

CVE-2025-71151: cifs: Fix memory and information leak in smb3_reconfigure()

Analyzed
AliasesUBUNTU-CVE-2025-71151DEBIAN-CVE-2025-71151
Published 23-01-2026Last modified 23-05-2026

Vulnerability summary

CVE-2025-71151 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 21 · Related 20
DSA-6126-1RHBA-2025:6279RHSA-2025:6966USN-8177-1USN-8177-2USN-8179-1

Timeline

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

Description

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix memory and information leak in smb3_reconfigure() In smb3_reconfigure(), if smb3_sync_session_ctx_passwords() fails, the function returns immediately without freeing and erasing the newly allocated new_password and new_password2. This causes both a memory leak and a potential information leak. Fix this by calling kfree_sensitive() on both password buffers before returning in this error case.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.13% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu130 products
  • linux< 6.8.0-110.110 | < 6.17.0-22.22
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 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≥ 880a661e67648a3ffe85405e8de5f50650a3c0b2, < bc390b2737205163e48cc1655f6a0c8cd55b02fc | ≥ 0e4145774c016530bf99afb3675a1a0593c35642, < 5679cc90bb5415801fa29041da0319d9e15d295d | ≥ 0f0e357902957fba28ed31bde0d6921c6bd1485d, < bb82aaee16907dc4d0b9b0ca7953ceb3edc328c6 | ≥ 0f0e357902957fba28ed31bde0d6921c6bd1485d, < cb6d5aa9c0f10074f1ad056c3e2278ad2cc7ec8d | 674ba43944dab8e8f87434e25d9d10c5152584bc | ≥ 6.6.64, < 6.6.120 | ≥ 6.12.2, < 6.12.64 | ≥ 6.11.11, < 6.12 | 6.13
  • linux_kernel≥ 6.6.64, < 6.6.120 | ≥ 6.11.11, < 6.12 | ≥ 6.12.2, < 6.12.64 | ≥ 6.13, < 6.18.3 | 6.19:rc1 | 6.19:rc2
Debian1 product
  • linux< 6.12.69-1 | < 6.18.3-1

3 vendors · 133 products

References

28 links
Show all 28 references