Answer in brief
CVE-2026-64217 records a Unknown severity vulnerability in netfs: Fix overrun check in netfs_extract_user_iter(). 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 | >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <00efe58bbdcc93272d579ca24bfc912563f4a204 || >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9 || >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <afeb32d9bf9aaeea51d0f723a19f14afb73bd94d || >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <f48b9157f0f611fa436c360648603d5ded719b12 || >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <0ef37eef83fad3542ee06db2940433ae1a92b39d | 00efe58bbdcc93272d579ca24bfc912563f4a204, 96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9, afeb32d9bf9aaeea51d0f723a19f14afb73bd94d, f48b9157f0f611fa436c360648603d5ded719b12, 0ef37eef83fad3542ee06db2940433ae1a92b39d |
| Linux/Linuxgeneric | 6.3 | Not reported |
Published upstream
Jul 24, 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: netfs: Fix overrun check in netfs_extract_user_iter() Fix netfs_extract_user_iter() so that if iov_iter_extract_pages() overfills pages[], then those pages don't get included in the iterator constructed at the end of the function. If there was an overfill, memory corruption has already happened.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-64217 records a Unknown severity vulnerability in netfs: Fix overrun check in netfs_extract_user_iter(). 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 | >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <00efe58bbdcc93272d579ca24bfc912563f4a204 || >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9 || >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <afeb32d9bf9aaeea51d0f723a19f14afb73bd94d || >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <f48b9157f0f611fa436c360648603d5ded719b12 || >=85dd2c8ff368b1446be9febde84afe1d7aec4261 <0ef37eef83fad3542ee06db2940433ae1a92b39d | 00efe58bbdcc93272d579ca24bfc912563f4a204, 96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9, afeb32d9bf9aaeea51d0f723a19f14afb73bd94d, f48b9157f0f611fa436c360648603d5ded719b12, 0ef37eef83fad3542ee06db2940433ae1a92b39d |
| Linux/Linuxgeneric | 6.3 | Not reported |
Published upstream
Jul 24, 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: netfs: Fix overrun check in netfs_extract_user_iter() Fix netfs_extract_user_iter() so that if iov_iter_extract_pages() overfills pages[], then those pages don't get included in the iterator constructed at the end of the function. If there was an overfill, memory corruption has already happened.
Quoted source text, attributed separately from HOL analysis.