Answer in brief
CVE-2026-63954 records a Unknown severity vulnerability in hpfs: fix a crash if hpfs_map_dnode_bitmap fails. 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.
Answer in brief
CVE-2026-63954 records a Unknown severity vulnerability in hpfs: fix a crash if hpfs_map_dnode_bitmap fails. 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 | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <010b08084000ef018f1a8de5197087f3b91d8cfe || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d98d8562b3284b5a5c8eb67e71b794508e46e288 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1648a3c7f4e18f46a4881920133fc4f2494185a0 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7c58c55a2a16f7274772507bd1637be609351b4f || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1d73a533760bc5abb83b3cc759133596f7bb708f || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0886c6f257fe3663f80218aa1919b0f3f21bf22c || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4f37bb30b57d6d403d02673074555bd3c3602bef || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <974820a59efde7c1a7e1260bcfe9bb81f833cc9f | 010b08084000ef018f1a8de5197087f3b91d8cfe, d98d8562b3284b5a5c8eb67e71b794508e46e288, 1648a3c7f4e18f46a4881920133fc4f2494185a0, 7c58c55a2a16f7274772507bd1637be609351b4f, 1d73a533760bc5abb83b3cc759133596f7bb708f, 0886c6f257fe3663f80218aa1919b0f3f21bf22c, 4f37bb30b57d6d403d02673074555bd3c3602bef, 974820a59efde7c1a7e1260bcfe9bb81f833cc9f |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: hpfs: fix a crash if hpfs_map_dnode_bitmap fails If hpfs_map_dnode_bitmap fails, the code would call hpfs_brelse4 on uninitialized quad buffer head, causing a crash.
Quoted source text, attributed separately from HOL analysis.
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 | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <010b08084000ef018f1a8de5197087f3b91d8cfe || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d98d8562b3284b5a5c8eb67e71b794508e46e288 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1648a3c7f4e18f46a4881920133fc4f2494185a0 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7c58c55a2a16f7274772507bd1637be609351b4f || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1d73a533760bc5abb83b3cc759133596f7bb708f || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0886c6f257fe3663f80218aa1919b0f3f21bf22c || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4f37bb30b57d6d403d02673074555bd3c3602bef || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <974820a59efde7c1a7e1260bcfe9bb81f833cc9f | 010b08084000ef018f1a8de5197087f3b91d8cfe, d98d8562b3284b5a5c8eb67e71b794508e46e288, 1648a3c7f4e18f46a4881920133fc4f2494185a0, 7c58c55a2a16f7274772507bd1637be609351b4f, 1d73a533760bc5abb83b3cc759133596f7bb708f, 0886c6f257fe3663f80218aa1919b0f3f21bf22c, 4f37bb30b57d6d403d02673074555bd3c3602bef, 974820a59efde7c1a7e1260bcfe9bb81f833cc9f |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: hpfs: fix a crash if hpfs_map_dnode_bitmap fails If hpfs_map_dnode_bitmap fails, the code would call hpfs_brelse4 on uninitialized quad buffer head, causing a crash.
Quoted source text, attributed separately from HOL analysis.