5.5

CVE-2025-71295: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2025-71295DEBIAN-CVE-2025-71295
Published 06-05-2026Last modified 23-05-2026
Open JSON

Vulnerability summary

CVE-2025-71295 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
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 12 · Related 12
USN-8492-1USN-8492-2USN-8492-3USN-8492-4USN-8492-5USN-8497-1

Timeline

  1. 06-05-2026
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: fs/buffer: add alert in try_to_free_buffers() for folios without buffers try_to_free_buffers() can be called on folios with no buffers attached when filemap_release_folio() is invoked on a folio belonging to a mapping with AS_RELEASE_ALWAYS set but no release_folio operation defined. In such cases, folio_needs_release() returns true because of the AS_RELEASE_ALWAYS flag, but the folio has no private buffer data. This causes try_to_free_buffers() to call drop_buffers() on a folio with no buffers, leading to a null pointer dereference. Adding a check in try_to_free_buffers() to return early if the folio has no buffers attached, with WARN_ON_ONCE() to alert about the misconfiguration. This provides defensive hardening.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.12%

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

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 6.8.0-134.134
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1060.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d0eafc763135508be118dac208887a26c0adb74d, < 1b111a69a6e33a922622bf9870e4e63fb2b649c8 | ≥ b4fa966f03b7401ceacd4ffd7227197afb2b8376, < c1b6227555c52781178132b7a06466711855795c | ≥ b4fa966f03b7401ceacd4ffd7227197afb2b8376, < 727e5140e0cf83b4ce6a11b89bb73bff5d96f8f3 | ≥ b4fa966f03b7401ceacd4ffd7227197afb2b8376, < 42c32d7571ccd8ef32351cac506f00b0fae99fd2 | ≥ b4fa966f03b7401ceacd4ffd7227197afb2b8376, < c6246ca15999053d2632fbcc7b86e6eef7f077cb | ≥ b4fa966f03b7401ceacd4ffd7227197afb2b8376, < b68f91ef3b3fe82ad78c417de71b675699a8467c | ≥ 6.1.72, < 6.1.165 | 6.6
  • linux_kernel≥ 6.1.72, < 6.1.165 | ≥ 6.2, < 6.6.128 | ≥ 6.7, < 6.12.75 | ≥ 6.13, < 6.18.16 | ≥ 6.19, < 6.19.6
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.6-1

3 vendors · 160 products

References

22 links
Show all 22 references