{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43281","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.998Z","datePublished":"2026-05-06T11:29:02.278Z","dateUpdated":"2026-05-11T22:21:31.452Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:21:31.452Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()\n\nAlthough it is guided that `#mbox-cells` must be at least 1, there are\nmany instances of `#mbox-cells = <0>;` in the device tree. If that is\nthe case and the corresponding mailbox controller does not provide\n`fw_xlate` and of_xlate` function pointers, `fw_mbox_index_xlate()` will\nbe used by default and out-of-bounds accesses could occur due to lack of\nbounds check in that function."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mailbox/mailbox.c"],"versions":[{"version":"2b6d83e2b8b7de82331a6a1dcd64b51020a6031c","lessThan":"2662ed331a69c0b551f78af58f12eb629a89a36f","status":"affected","versionType":"git"},{"version":"2b6d83e2b8b7de82331a6a1dcd64b51020a6031c","lessThan":"31c4c67dec3362094a6747a171a4848e98542265","status":"affected","versionType":"git"},{"version":"2b6d83e2b8b7de82331a6a1dcd64b51020a6031c","lessThan":"01d9a8c2615d436b2b30c19c1afe9fcd5726ff6d","status":"affected","versionType":"git"},{"version":"2b6d83e2b8b7de82331a6a1dcd64b51020a6031c","lessThan":"4caae8168d1b808c7d4ff481295292e3f97f90fb","status":"affected","versionType":"git"},{"version":"2b6d83e2b8b7de82331a6a1dcd64b51020a6031c","lessThan":"f50b39fd7c72a8734153644ee945ca0d8b2e65ab","status":"affected","versionType":"git"},{"version":"2b6d83e2b8b7de82331a6a1dcd64b51020a6031c","lessThan":"fcd7f96c783626c07ee3ed75fa3739a8a2052310","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mailbox/mailbox.c"],"versions":[{"version":"3.18","status":"affected"},{"version":"0","lessThan":"3.18","status":"unaffected","versionType":"semver"},{"version":"6.1.167","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.130","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.77","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.16","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.6","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","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":"3.18","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.12.77"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2662ed331a69c0b551f78af58f12eb629a89a36f"},{"url":"https://git.kernel.org/stable/c/31c4c67dec3362094a6747a171a4848e98542265"},{"url":"https://git.kernel.org/stable/c/01d9a8c2615d436b2b30c19c1afe9fcd5726ff6d"},{"url":"https://git.kernel.org/stable/c/4caae8168d1b808c7d4ff481295292e3f97f90fb"},{"url":"https://git.kernel.org/stable/c/f50b39fd7c72a8734153644ee945ca0d8b2e65ab"},{"url":"https://git.kernel.org/stable/c/fcd7f96c783626c07ee3ed75fa3739a8a2052310"}],"title":"mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()","x_generator":{"engine":"bippy-1.2.0"}}}}