{"id":"CVE-2026-53151","revision":"967eed68ba2445288dce68a2cce13718","records":[{"revision":"967eed68ba2445288dce68a2cce13718","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53151","aliases":[],"title":"rxrpc: Fix the ACK parser to extract the SACK table for parsing","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix the ACK parser to extract the SACK table for parsing\n\nFix modification of the received skbuff in rxrpc_input_soft_acks() and a\npotential incorrect access of the buffer in a fragmented UDP packet (the\npacket would probably have to be deliberately pre-generated as fragmented)\nwhen AF_RXRPC tries to extract the contents of the SACK table by copying\nout the contents of the SACK table into a buffer before attempting to parse\n\nAF_RXRPC assumes that it can just call skb_condense() and then validly\naccess the SACK table from skb->data and that it will be a flat buffer -\nbut skb_condense() can silently fail to do anything under some\ncircumstances.\n\nNote that whilst rxrpc_input_soft_acks() should be able to parse extended\nACKs, the rest of AF_RXRPC doesn't currently support that.\n\nFurther, there's then no need to call skb_condense() in rxrpc_input_ack(),\nso don't.","state":0,"publishedAt":"2026-06-25T08:38:36.187+00:00","modifiedAt":"2026-10-19T19:57:25.967+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/rxrpc/input.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"d57a3a151660902091491ac2633134e1be92557f\",\n                            \"lessThan\": \"5d1ae4e17a3ecd8561cdb4f4f70152f41039c4e1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d57a3a151660902091491ac2633134e1be92557f\",\n                            \"lessThan\": \"775c5e89272a2615b72bb84f611ba66fa3b7493e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d57a3a151660902091491ac2633134e1be92557f\",\n                            \"lessThan\": \"566c4c1244de50fbff1f89ff93c9d7b0fc256db4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d57a3a151660902091491ac2633134e1be92557f\",\n                            \"lessThan\": \"224298450be5c04d2a6ea1c2a94669d7ebf65d00\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d57a3a151660902091491ac2633134e1be92557f\",\n                            \"lessThan\": \"333b6d5bb9f87827ac2639c737bf9613dbae7253\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/rxrpc/input.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.144\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.95\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.36\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.13\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/5d1ae4e17a3ecd8561cdb4f4f70152f41039c4e1","https://git.kernel.org/stable/c/775c5e89272a2615b72bb84f611ba66fa3b7493e","https://git.kernel.org/stable/c/566c4c1244de50fbff1f89ff93c9d7b0fc256db4","https://git.kernel.org/stable/c/224298450be5c04d2a6ea1c2a94669d7ebf65d00","https://git.kernel.org/stable/c/333b6d5bb9f87827ac2639c737bf9613dbae7253"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53151","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53151","identifiers":["CVE-2026-53151"]},"retained":false,"historicalAffected":[]}],"coverage":[]}