{"id":"CVE-2026-46094","summary":"ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access","details":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix bounds check in check_xattrs() to prevent out-of-bounds access\n\nThe bounds check for the next xattr entry in check_xattrs() uses\n(void *)next \u003e= end, which allows next to point within sizeof(u32)\nbytes of end. On the next loop iteration, IS_LAST_ENTRY() reads 4\nbytes via *(__u32 *)(entry), which can overrun the valid xattr region.\n\nFor example, if next lands at end - 1, the check passes since\nnext \u003c end, but IS_LAST_ENTRY() reads 4 bytes starting at end - 1,\naccessing 3 bytes beyond the valid region.\n\nFix this by changing the check to (void *)next + sizeof(u32) \u003e end,\nensuring there is always enough space for the IS_LAST_ENTRY() read\non the subsequent iteration.","modified":"2026-06-27T11:55:33.016799731Z","published":"2026-05-27T12:58:45.304Z","related":["SUSE-SU-2026:22099-1","SUSE-SU-2026:22108-1","SUSE-SU-2026:22112-1","SUSE-SU-2026:22127-1","SUSE-SU-2026:22137-1","SUSE-SU-2026:2482-1","SUSE-SU-2026:2591-1","openSUSE-SU-2026:10954-1","openSUSE-SU-2026:20965-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46094.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/520986722dbf869c122252123fc161c7302eab7d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/537e065977022aa22f2c2503e8accaf16622e0fd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5a5314d2387633a272a04d1bd8727f99058e4e68"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab6da97bc310db35d4e4ef5354bc3ff626b0698c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eceafc31ea7b42c984ece10d79d505c0bb6615d5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46094.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46094"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3478c83cf26bbffd026ae6a56bcb1fe544f0834e"},{"fixed":"ab6da97bc310db35d4e4ef5354bc3ff626b0698c"},{"fixed":"5a5314d2387633a272a04d1bd8727f99058e4e68"},{"fixed":"537e065977022aa22f2c2503e8accaf16622e0fd"},{"fixed":"520986722dbf869c122252123fc161c7302eab7d"},{"fixed":"eceafc31ea7b42c984ece10d79d505c0bb6615d5"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46094.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.3.0"},{"fixed":"6.6.140"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.86"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.27"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46094.json"}}],"schema_version":"1.7.5"}