Answer in brief
CVE-2026-74404 records a Unknown severity vulnerability in crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one. 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.
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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <830c1f3e71989448652973375ef5e39b6ede47a3 || >=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <c5c79d92da0f9a09f48be5e2aabed2d6d1a96294 || >=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <af7341616b742ad2c374a90998bd650a035f694d || >=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <1b864b6cb213bbd7b406e9b2e98c962077f300df | 830c1f3e71989448652973375ef5e39b6ede47a3, c5c79d92da0f9a09f48be5e2aabed2d6d1a96294, af7341616b742ad2c374a90998bd650a035f694d, 1b864b6cb213bbd7b406e9b2e98c962077f300df |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one Sashiko notes: > regarding the bounds check in snp_filter_reserved_mem_regions() > called via walk_iomem_res_desc(): does the check > if ((range_list->num_elements * 16 + 8) > PAGE_SIZE) > allow an off-by-one heap buffer overflow? > > If range_list->num_elements is 255, 255 * 16 + 8 = 4088, which is <= 4096. > Writing range->base (8 bytes) fills 4088-4095, but writing range->page_count > (4 bytes) would write to 4096-4099, overflowing the kzalloc-allocated > PAGE_SIZE buffer. Fix this by accounting for the entry about to be written to, in addition to the entries that are already allocated.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-74404 records a Unknown severity vulnerability in crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one. 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.
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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <830c1f3e71989448652973375ef5e39b6ede47a3 || >=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <c5c79d92da0f9a09f48be5e2aabed2d6d1a96294 || >=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <af7341616b742ad2c374a90998bd650a035f694d || >=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <1b864b6cb213bbd7b406e9b2e98c962077f300df | 830c1f3e71989448652973375ef5e39b6ede47a3, c5c79d92da0f9a09f48be5e2aabed2d6d1a96294, af7341616b742ad2c374a90998bd650a035f694d, 1b864b6cb213bbd7b406e9b2e98c962077f300df |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one Sashiko notes: > regarding the bounds check in snp_filter_reserved_mem_regions() > called via walk_iomem_res_desc(): does the check > if ((range_list->num_elements * 16 + 8) > PAGE_SIZE) > allow an off-by-one heap buffer overflow? > > If range_list->num_elements is 255, 255 * 16 + 8 = 4088, which is <= 4096. > Writing range->base (8 bytes) fills 4088-4095, but writing range->page_count > (4 bytes) would write to 4096-4099, overflowing the kzalloc-allocated > PAGE_SIZE buffer. Fix this by accounting for the entry about to be written to, in addition to the entries that are already allocated.
Quoted source text, attributed separately from HOL analysis.