Answer in brief
CVE-2025-38364 records a Unknown severity vulnerability in maple_tree: fix MA_STATE_PREALLOC flag in mas_preallocate(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. 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), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <d69cd64bd5af41c6fd409313504089970edaf02f || >=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <e63032e66bca1d06e600033f3369ba3db3af0870 || >=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <cf95f8426f889949b738f51ffcd72884411f3a6a || >=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <9e32f4700867abbd5d19abfcf698dbd0d2ce36a4 || >=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <fba46a5d83ca8decb338722fb4899026d8d9ead2 | d69cd64bd5af41c6fd409313504089970edaf02f, e63032e66bca1d06e600033f3369ba3db3af0870, cf95f8426f889949b738f51ffcd72884411f3a6a, 9e32f4700867abbd5d19abfcf698dbd0d2ce36a4, fba46a5d83ca8decb338722fb4899026d8d9ead2 |
| Linux/Linuxgeneric | 6.1 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
Published upstream
Jul 25, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 6, 2026
In the Linux kernel, the following vulnerability has been resolved: maple_tree: fix MA_STATE_PREALLOC flag in mas_preallocate() Temporarily clear the preallocation flag when explicitly requesting allocations. Pre-existing allocations are already counted against the request through mas_node_count_gfp(), but the allocations will not happen if the MA_STATE_PREALLOC flag is set. This flag is meant to avoid re-allocating in bulk allocation mode, and to detect issues with preallocation calculations. The MA_STATE_PREALLOC flag should also always be set on zero allocations so that detection of underflow allocations will print a WARN_ON() during consumption. User visible effect of this flaw is a WARN_ON() followed by a null pointer dereference when subsequent requests for larger number of nodes is ignored, such as the vma merge retry in mmap_region() caused by drivers altering the vma flags (which happens in v6.6, at least)
Quoted source text, attributed separately from HOL analysis.