Answer in brief
CVE-2022-49743 records a High severity (CVSS 7.5) vulnerability in ovl: Use "buf" flexible array for memcpy() destination. 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 7.5. 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 |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 <012cdef22000f3104e4fa8224ad29fde509b8caf || >=cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 <a77141a06367825d639ac51b04703d551163e36c || >=cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 <07a96977b2f462337a9121302de64277b8747ab1 || >=cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 <cf8aa9bf97cadf85745506c6a3e244b22c268d63 | 012cdef22000f3104e4fa8224ad29fde509b8caf, a77141a06367825d639ac51b04703d551163e36c, 07a96977b2f462337a9121302de64277b8747ab1, cf8aa9bf97cadf85745506c6a3e244b22c268d63 |
| Linux/Linuxgeneric | 5.5 | Not reported |
Published upstream
Mar 27, 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: ovl: Use "buf" flexible array for memcpy() destination The "buf" flexible array needs to be the memcpy() destination to avoid false positive run-time warning from the recent FORTIFY_SOURCE hardening: memcpy: detected field-spanning write (size 93) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2022-49743 records a High severity (CVSS 7.5) vulnerability in ovl: Use "buf" flexible array for memcpy() destination. 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 7.5. 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 |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 <012cdef22000f3104e4fa8224ad29fde509b8caf || >=cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 <a77141a06367825d639ac51b04703d551163e36c || >=cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 <07a96977b2f462337a9121302de64277b8747ab1 || >=cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 <cf8aa9bf97cadf85745506c6a3e244b22c268d63 | 012cdef22000f3104e4fa8224ad29fde509b8caf, a77141a06367825d639ac51b04703d551163e36c, 07a96977b2f462337a9121302de64277b8747ab1, cf8aa9bf97cadf85745506c6a3e244b22c268d63 |
| Linux/Linuxgeneric | 5.5 | Not reported |
Published upstream
Mar 27, 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: ovl: Use "buf" flexible array for memcpy() destination The "buf" flexible array needs to be the memcpy() destination to avoid false positive run-time warning from the recent FORTIFY_SOURCE hardening: memcpy: detected field-spanning write (size 93) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)
Quoted source text, attributed separately from HOL analysis.