{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40126","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:20:57.169Z","datePublished":"2025-11-12T10:23:20.460Z","dateUpdated":"2026-05-11T21:43:16.481Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:43:16.481Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC\n\nThe referenced commit introduced exception handlers on user-space memory\nreferences in copy_from_user and copy_to_user. These handlers return from\nthe respective function and calculate the remaining bytes left to copy\nusing the current register contents. This commit fixes a couple of bad\ncalculations. This will fix the return value of copy_from_user and\ncopy_to_user in the faulting case. The behaviour of memcpy stays unchanged."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/sparc/lib/U1memcpy.S"],"versions":[{"version":"cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada","lessThan":"0bf3dc3a2156f1c5ddaba4b85d09767874634114","status":"affected","versionType":"git"},{"version":"cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada","lessThan":"41c18baee66134e6ef786eb075c1b6adb22432b0","status":"affected","versionType":"git"},{"version":"cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada","lessThan":"59424dc0d0e044b2eb007686a4724ddd91d57db5","status":"affected","versionType":"git"},{"version":"cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada","lessThan":"9b137f277cc3297044aabd950f589e505d30104c","status":"affected","versionType":"git"},{"version":"cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada","lessThan":"674ff598148a28bae0b5372339de56f2abf0b1d1","status":"affected","versionType":"git"},{"version":"cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada","lessThan":"7de3a75bbc8465d816336c74d50109e73501efab","status":"affected","versionType":"git"},{"version":"cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada","lessThan":"57c278500fce3cd4e1c540700c0b05426a958393","status":"affected","versionType":"git"},{"version":"cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada","lessThan":"4fba1713001195e59cfc001ff1f2837dab877efb","status":"affected","versionType":"git"},{"version":"1731d90d8a558ecb20cdee0c2c001ae8e15c251d","status":"affected","versionType":"git"},{"version":"b0580eadc19ff3a617a7d07cfaf2a985153c114e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/sparc/lib/U1memcpy.S"],"versions":[{"version":"4.9","status":"affected"},{"version":"0","lessThan":"4.9","status":"unaffected","versionType":"semver"},{"version":"5.4.301","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.246","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.195","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.156","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.112","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.53","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.17.3","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.4.301"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.10.246"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.15.195"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.1.156"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.6.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.12.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.17.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8.10"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0bf3dc3a2156f1c5ddaba4b85d09767874634114"},{"url":"https://git.kernel.org/stable/c/41c18baee66134e6ef786eb075c1b6adb22432b0"},{"url":"https://git.kernel.org/stable/c/59424dc0d0e044b2eb007686a4724ddd91d57db5"},{"url":"https://git.kernel.org/stable/c/9b137f277cc3297044aabd950f589e505d30104c"},{"url":"https://git.kernel.org/stable/c/674ff598148a28bae0b5372339de56f2abf0b1d1"},{"url":"https://git.kernel.org/stable/c/7de3a75bbc8465d816336c74d50109e73501efab"},{"url":"https://git.kernel.org/stable/c/57c278500fce3cd4e1c540700c0b05426a958393"},{"url":"https://git.kernel.org/stable/c/4fba1713001195e59cfc001ff1f2837dab877efb"}],"title":"sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC","x_generator":{"engine":"bippy-1.2.0"}}}}