{"id":"CVE-2026-80993","revision":"83314d8d9f334668b65cb3a3a80f611d","records":[{"revision":"83314d8d9f334668b65cb3a3a80f611d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80993","aliases":[],"title":"net: phylink: correctly validate returned PCS in phylink_inband_caps","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phylink: correctly validate returned PCS in phylink_inband_caps\n\nIn phylink_inband_caps(), the PCS returned by mac_select_pcs is only\nchecked if NULL but mac_select_pcs can also return an error pointer.\n\nThis can cause a kernel panic as phylink_pcs_inband_caps() only checks\nif passed PCS is not NULL and directly dereference ops from the phylink_pcs\nstruct.\n\nUse the IS_ERR_OR_NULL macro to address both case where the returned\nPCS can be NULL or an error pointer and prevent a kernel panic.","state":0,"publishedAt":"2026-09-11T19:42:49.521+00:00","modifiedAt":"2026-10-19T08:46:17.653+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                        \"drivers/net/phy/phylink.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"df874f9e52c340cc6f0a0014a97b778f67d46849\",\n                            \"lessThan\": \"b6b533f83461c3730875cf3ed5ff6362dcb67be9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"df874f9e52c340cc6f0a0014a97b778f67d46849\",\n                            \"lessThan\": \"fb4d77553841ae85bed9b2cf03351c401e871d85\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"df874f9e52c340cc6f0a0014a97b778f67d46849\",\n                            \"lessThan\": \"f2849b1fd059ec9b3281b771e6ac5aad9feee851\",\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                        \"drivers/net/phy/phylink.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/b6b533f83461c3730875cf3ed5ff6362dcb67be9","https://git.kernel.org/stable/c/fb4d77553841ae85bed9b2cf03351c401e871d85","https://git.kernel.org/stable/c/f2849b1fd059ec9b3281b771e6ac5aad9feee851"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80993","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80993","identifiers":["CVE-2026-80993"]},"retained":false,"historicalAffected":[]}],"coverage":[]}