{"id":"CVE-2026-98248","revision":"d3cb24290e504ce2a98161cfc3740503","records":[{"revision":"d3cb24290e504ce2a98161cfc3740503","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98248","aliases":[],"title":"arm64: percpu: Fix LSE operations on {8,16}-bit types","description":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: percpu: Fix LSE operations on {8,16}-bit types\n\nThe assembly for __percpu_##name##_case_##sz() and\n__percpu_##name##_return_case_##sz() doesn't use the 'sfx' macro\nargument to form the LSE instruction. Without 'sfx', a W register\nargument will imply a 32-bit memory location, and consequently\n{8,16}-bit ops will erroneously read and write 32 bits of memory when\nthe LSE instruction is used.\n\nFix this by appending 'sfx' to 'op_lse' to LSE instruction. It is not\nnecessary (and not valid) to append 'sfx' to 'op_llsc', as 'op_llsc' is\na register-register operation which does not access memory (and does not\ntake a size suffix).","state":0,"publishedAt":"2026-10-06T08:45:16.693+00:00","modifiedAt":"2026-10-19T09:16:19.73+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                        \"arch/arm64/include/asm/percpu.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"959bf2fd03b59fc107584c21425f3dc73c49f762\",\n                            \"lessThan\": \"d69ab4480e49bf925f4781afcc9f284affcb96b6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"959bf2fd03b59fc107584c21425f3dc73c49f762\",\n                            \"lessThan\": \"390742871a723b52de9b92a94c0d1c85a2531e3e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"959bf2fd03b59fc107584c21425f3dc73c49f762\",\n                            \"lessThan\": \"843ace1d0a39e9b1cfcbfb3856a7b0fbdd9cd003\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"959bf2fd03b59fc107584c21425f3dc73c49f762\",\n                            \"lessThan\": \"8cf2093f5372952a9ebc805c418d45df7112cd14\",\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                        \"arch/arm64/include/asm/percpu.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\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/d69ab4480e49bf925f4781afcc9f284affcb96b6","https://git.kernel.org/stable/c/390742871a723b52de9b92a94c0d1c85a2531e3e","https://git.kernel.org/stable/c/843ace1d0a39e9b1cfcbfb3856a7b0fbdd9cd003","https://git.kernel.org/stable/c/8cf2093f5372952a9ebc805c418d45df7112cd14"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98248","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98248","identifiers":["CVE-2026-98248"]},"retained":false,"historicalAffected":[]}],"coverage":[]}