Answer in brief
CVE-2023-53473 records a High severity (CVSS 7.8) vulnerability in ext4: improve error handling from ext4_dirhash(). 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 7.8. 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 |
| cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <b2531936118deb3f479c4fa1bcd787b74b8faa6a || >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <f68876aeef96ef8b708ab10b9cb47ce0a5adb424 || >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <70d579aefa652a06af97e013e3fbbabbe5a43553 || >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <c1fae027da61fe8e7eb99f7244297e81bc0f1e43 || >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786 | b2531936118deb3f479c4fa1bcd787b74b8faa6a, f68876aeef96ef8b708ab10b9cb47ce0a5adb424, 70d579aefa652a06af97e013e3fbbabbe5a43553, c1fae027da61fe8e7eb99f7244297e81bc0f1e43, 4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786 |
| Linux/Linuxgeneric | 5.2 | Not reported |
Published upstream
Oct 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: improve error handling from ext4_dirhash() The ext4_dirhash() will *almost* never fail, especially when the hash tree feature was first introduced. However, with the addition of support of encrypted, casefolded file names, that function can most certainly fail today. So make sure the callers of ext4_dirhash() properly check for failures, and reflect the errors back up to their callers.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2023-53473 records a High severity (CVSS 7.8) vulnerability in ext4: improve error handling from ext4_dirhash(). 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 7.8. 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 |
| cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <b2531936118deb3f479c4fa1bcd787b74b8faa6a || >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <f68876aeef96ef8b708ab10b9cb47ce0a5adb424 || >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <70d579aefa652a06af97e013e3fbbabbe5a43553 || >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <c1fae027da61fe8e7eb99f7244297e81bc0f1e43 || >=b886ee3e778ec2ad43e276fd378ab492cf6819b7 <4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786 | b2531936118deb3f479c4fa1bcd787b74b8faa6a, f68876aeef96ef8b708ab10b9cb47ce0a5adb424, 70d579aefa652a06af97e013e3fbbabbe5a43553, c1fae027da61fe8e7eb99f7244297e81bc0f1e43, 4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786 |
| Linux/Linuxgeneric | 5.2 | Not reported |
Published upstream
Oct 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: improve error handling from ext4_dirhash() The ext4_dirhash() will *almost* never fail, especially when the hash tree feature was first introduced. However, with the addition of support of encrypted, casefolded file names, that function can most certainly fail today. So make sure the callers of ext4_dirhash() properly check for failures, and reflect the errors back up to their callers.
Quoted source text, attributed separately from HOL analysis.