Answer in brief
CVE-2023-53372 records a High severity (CVSS 8.2) vulnerability in sctp: fix a potential overflow in sctp_ifwdtsn_skip. 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-2023-53372 records a High severity (CVSS 8.2) vulnerability in sctp: fix a potential overflow in sctp_ifwdtsn_skip. 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 8.2. 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:6.3:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <4fbd094d4131a10d06a45d64158567052a35b3f4 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <ad831a7079c99c01e801764b53bc9997c2e9c0f7 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <79b28f42214a3d0d6a8c514db3602260bd5d6cb5 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <6109f5b13ce3e3e537db6f18976ec0e9118d1c6f || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <5c9367ac5a22d71841bcd00130f9146c9b227d57 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <ad988e9b5ff04607e624a459209e8c2d0c15fc73 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <32832a2caf82663870126c5186cf8f86c8b2a649 | 4fbd094d4131a10d06a45d64158567052a35b3f4, ad831a7079c99c01e801764b53bc9997c2e9c0f7, 79b28f42214a3d0d6a8c514db3602260bd5d6cb5, 6109f5b13ce3e3e537db6f18976ec0e9118d1c6f, 5c9367ac5a22d71841bcd00130f9146c9b227d57, ad988e9b5ff04607e624a459209e8c2d0c15fc73, 32832a2caf82663870126c5186cf8f86c8b2a649 |
| Linux/Linuxgeneric | 4.16 | Not reported |
Published upstream
Sep 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: sctp: fix a potential overflow in sctp_ifwdtsn_skip Currently, when traversing ifwdtsn skips with _sctp_walk_ifwdtsn, it only checks the pos against the end of the chunk. However, the data left for the last pos may be < sizeof(struct sctp_ifwdtsn_skip), and dereference it as struct sctp_ifwdtsn_skip may cause coverflow. This patch fixes it by checking the pos against "the end of the chunk - sizeof(struct sctp_ifwdtsn_skip)" in sctp_ifwdtsn_skip, similar to sctp_fwdtsn_skip.
Quoted source text, attributed separately from HOL analysis.
CVSS is 8.2. 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:6.3:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <4fbd094d4131a10d06a45d64158567052a35b3f4 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <ad831a7079c99c01e801764b53bc9997c2e9c0f7 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <79b28f42214a3d0d6a8c514db3602260bd5d6cb5 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <6109f5b13ce3e3e537db6f18976ec0e9118d1c6f || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <5c9367ac5a22d71841bcd00130f9146c9b227d57 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <ad988e9b5ff04607e624a459209e8c2d0c15fc73 || >=0fc2ea922c8ad5520c80f03facbf396c81dce802 <32832a2caf82663870126c5186cf8f86c8b2a649 | 4fbd094d4131a10d06a45d64158567052a35b3f4, ad831a7079c99c01e801764b53bc9997c2e9c0f7, 79b28f42214a3d0d6a8c514db3602260bd5d6cb5, 6109f5b13ce3e3e537db6f18976ec0e9118d1c6f, 5c9367ac5a22d71841bcd00130f9146c9b227d57, ad988e9b5ff04607e624a459209e8c2d0c15fc73, 32832a2caf82663870126c5186cf8f86c8b2a649 |
| Linux/Linuxgeneric | 4.16 | Not reported |
Published upstream
Sep 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: sctp: fix a potential overflow in sctp_ifwdtsn_skip Currently, when traversing ifwdtsn skips with _sctp_walk_ifwdtsn, it only checks the pos against the end of the chunk. However, the data left for the last pos may be < sizeof(struct sctp_ifwdtsn_skip), and dereference it as struct sctp_ifwdtsn_skip may cause coverflow. This patch fixes it by checking the pos against "the end of the chunk - sizeof(struct sctp_ifwdtsn_skip)" in sctp_ifwdtsn_skip, similar to sctp_fwdtsn_skip.
Quoted source text, attributed separately from HOL analysis.