Answer in brief
CVE-2025-71295 records a Medium severity (CVSS 5.5) vulnerability in fs/buffer: add alert in try_to_free_buffers() for folios without buffers. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=d0eafc763135508be118dac208887a26c0adb74d <1b111a69a6e33a922622bf9870e4e63fb2b649c8 || >=b4fa966f03b7401ceacd4ffd7227197afb2b8376 <c1b6227555c52781178132b7a06466711855795c || >=b4fa966f03b7401ceacd4ffd7227197afb2b8376 <727e5140e0cf83b4ce6a11b89bb73bff5d96f8f3 || >=b4fa966f03b7401ceacd4ffd7227197afb2b8376 <42c32d7571ccd8ef32351cac506f00b0fae99fd2 || >=b4fa966f03b7401ceacd4ffd7227197afb2b8376 <c6246ca15999053d2632fbcc7b86e6eef7f077cb || >=b4fa966f03b7401ceacd4ffd7227197afb2b8376 <b68f91ef3b3fe82ad78c417de71b675699a8467c || >=6.1.72 <6.1.165 | 1b111a69a6e33a922622bf9870e4e63fb2b649c8, c1b6227555c52781178132b7a06466711855795c, 727e5140e0cf83b4ce6a11b89bb73bff5d96f8f3, 42c32d7571ccd8ef32351cac506f00b0fae99fd2, c6246ca15999053d2632fbcc7b86e6eef7f077cb, b68f91ef3b3fe82ad78c417de71b675699a8467c, 6.1.165 |
| Linux/Linuxgeneric | 6.6 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 22, 2026
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.
Quoted source text, attributed separately from HOL analysis.