Answer in brief
CVE-2024-40992 records a Unknown severity vulnerability in RDMA/rxe: Fix responder length checking for UD request packets. 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 | >=689c5421bfe0eac65526bd97a466b9590a6aad3c <163868ec1f6c610d16da9e458fe1dd7d5de97341 || >=689c5421bfe0eac65526bd97a466b9590a6aad3c <943c94f41dfe36536dc9aaa12c9efdf548ceb996 || >=689c5421bfe0eac65526bd97a466b9590a6aad3c <f67ac0061c7614c1548963d3ef1ee1606efd8636 | 163868ec1f6c610d16da9e458fe1dd7d5de97341, 943c94f41dfe36536dc9aaa12c9efdf548ceb996, f67ac0061c7614c1548963d3ef1ee1606efd8636 |
| Linux/Linuxgeneric | 6.2 | Not reported |
Published upstream
Jul 12, 2024
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: RDMA/rxe: Fix responder length checking for UD request packets According to the IBA specification: If a UD request packet is detected with an invalid length, the request shall be an invalid request and it shall be silently dropped by the responder. The responder then waits for a new request packet. commit 689c5421bfe0 ("RDMA/rxe: Fix incorrect responder length checking") defers responder length check for UD QPs in function `copy_data`. But it introduces a regression issue for UD QPs. When the packet size is too large to fit in the receive buffer. `copy_data` will return error code -EINVAL. Then `send_data_in` will return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into ERROR state.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2024-40992 records a Unknown severity vulnerability in RDMA/rxe: Fix responder length checking for UD request packets. 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 | >=689c5421bfe0eac65526bd97a466b9590a6aad3c <163868ec1f6c610d16da9e458fe1dd7d5de97341 || >=689c5421bfe0eac65526bd97a466b9590a6aad3c <943c94f41dfe36536dc9aaa12c9efdf548ceb996 || >=689c5421bfe0eac65526bd97a466b9590a6aad3c <f67ac0061c7614c1548963d3ef1ee1606efd8636 | 163868ec1f6c610d16da9e458fe1dd7d5de97341, 943c94f41dfe36536dc9aaa12c9efdf548ceb996, f67ac0061c7614c1548963d3ef1ee1606efd8636 |
| Linux/Linuxgeneric | 6.2 | Not reported |
Published upstream
Jul 12, 2024
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: RDMA/rxe: Fix responder length checking for UD request packets According to the IBA specification: If a UD request packet is detected with an invalid length, the request shall be an invalid request and it shall be silently dropped by the responder. The responder then waits for a new request packet. commit 689c5421bfe0 ("RDMA/rxe: Fix incorrect responder length checking") defers responder length check for UD QPs in function `copy_data`. But it introduces a regression issue for UD QPs. When the packet size is too large to fit in the receive buffer. `copy_data` will return error code -EINVAL. Then `send_data_in` will return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into ERROR state.
Quoted source text, attributed separately from HOL analysis.