Answer in brief
CVE-2026-43406 records a Unknown severity vulnerability in libceph: prevent potential out-of-bounds reads in process_message_header(). 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-2026-43406 records a Unknown severity vulnerability in libceph: prevent potential out-of-bounds reads in process_message_header(). 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 | >=cd1a677cad994021b19665ed476aea63f5d54f31 <76ccf21a12c5f6d6790bc32c7da82446d877b2f4 || >=cd1a677cad994021b19665ed476aea63f5d54f31 <75582aaa580c11aed4c7731cad6b068b700e7efb || >=cd1a677cad994021b19665ed476aea63f5d54f31 <50156622eb0888e62541d715a98584480a1bc7cb || >=cd1a677cad994021b19665ed476aea63f5d54f31 <dbd857a9e1e33ea71eaf3e211877027e533770d1 || >=cd1a677cad994021b19665ed476aea63f5d54f31 <69fe5af33fa3806f398d21c081d73c66e5523bc2 || >=cd1a677cad994021b19665ed476aea63f5d54f31 <035867ae6f18df0aeedb2a57a5b74091bd4e3fe8 || >=cd1a677cad994021b19665ed476aea63f5d54f31 <69fb5d91bba44ecf7eb80530b85fa4fb028921d5 | 76ccf21a12c5f6d6790bc32c7da82446d877b2f4, 75582aaa580c11aed4c7731cad6b068b700e7efb, 50156622eb0888e62541d715a98584480a1bc7cb, dbd857a9e1e33ea71eaf3e211877027e533770d1, 69fe5af33fa3806f398d21c081d73c66e5523bc2, 035867ae6f18df0aeedb2a57a5b74091bd4e3fe8, 69fb5d91bba44ecf7eb80530b85fa4fb028921d5 |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
May 8, 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: libceph: prevent potential out-of-bounds reads in process_message_header() If the message frame is (maliciously) corrupted in a way that the length of the control segment ends up being less than the size of the message header or a different frame is made to look like a message frame, out-of-bounds reads may ensue in process_message_header(). Perform an explicit bounds check before decoding the message header.
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 | >=cd1a677cad994021b19665ed476aea63f5d54f31 <76ccf21a12c5f6d6790bc32c7da82446d877b2f4 || >=cd1a677cad994021b19665ed476aea63f5d54f31 <75582aaa580c11aed4c7731cad6b068b700e7efb || >=cd1a677cad994021b19665ed476aea63f5d54f31 <50156622eb0888e62541d715a98584480a1bc7cb || >=cd1a677cad994021b19665ed476aea63f5d54f31 <dbd857a9e1e33ea71eaf3e211877027e533770d1 || >=cd1a677cad994021b19665ed476aea63f5d54f31 <69fe5af33fa3806f398d21c081d73c66e5523bc2 || >=cd1a677cad994021b19665ed476aea63f5d54f31 <035867ae6f18df0aeedb2a57a5b74091bd4e3fe8 || >=cd1a677cad994021b19665ed476aea63f5d54f31 <69fb5d91bba44ecf7eb80530b85fa4fb028921d5 | 76ccf21a12c5f6d6790bc32c7da82446d877b2f4, 75582aaa580c11aed4c7731cad6b068b700e7efb, 50156622eb0888e62541d715a98584480a1bc7cb, dbd857a9e1e33ea71eaf3e211877027e533770d1, 69fe5af33fa3806f398d21c081d73c66e5523bc2, 035867ae6f18df0aeedb2a57a5b74091bd4e3fe8, 69fb5d91bba44ecf7eb80530b85fa4fb028921d5 |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
May 8, 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: libceph: prevent potential out-of-bounds reads in process_message_header() If the message frame is (maliciously) corrupted in a way that the length of the control segment ends up being less than the size of the message header or a different frame is made to look like a message frame, out-of-bounds reads may ensue in process_message_header(). Perform an explicit bounds check before decoding the message header.
Quoted source text, attributed separately from HOL analysis.