{"id":"CVE-2026-68158","revision":"e06ceda53ce74fa0a3f2cabaec7a57fc","records":[{"revision":"e06ceda53ce74fa0a3f2cabaec7a57fc","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68158","aliases":[],"title":"libceph: Fix multiplication overflow in decode_new_up_state_weight()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Fix multiplication overflow in decode_new_up_state_weight()\n\nIf a message of type CEPH_MSG_OSD_MAP contains a (maliciously) corrupted\nosdmap, out-of-bounds memory accesses may occur in\ndecode_new_up_state_weight(). This happens because the bounds check for\nthe new_state part is based on calculating its length depending on a len\nvalue read from the incoming message. This calculation may overflow\nleading to an incorrect bounds check. Subsequently, out-of-bounds reads\nmay occur when decoding this part.\n\nThis patch switches the multiplication to use check_mul_overflow() to\nabort processing the osdmap if an overflow occurred. Therefore,\nosdmaps/messages containing large values for len that result in a\nmultiplication overflow are treated as invalid.\n\n[ idryomov: rename new_state_len -> new_state_item_size, formatting ]","state":0,"publishedAt":"2026-08-10T11:59:24.675+00:00","modifiedAt":"2026-10-19T20:58:55.112+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 \"net/ceph/osdmap.c\"\n ],\n \"versions\": [\n {\n \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\",\n \"lessThan\": \"2ceee3b77b83052648c40fef965f836fd7699d26\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\",\n \"lessThan\": \"e4473751cc37db41f3f7da25d64a23e0c74570f1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\",\n \"lessThan\": \"f6961070c326bd158c38fa48756cde2bd78c4aaa\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\",\n \"lessThan\": \"05c90e059269f087becfcce23348496085835c29\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\",\n \"lessThan\": \"143ba49ead77ec483c0326f8aaad8649874e99c4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\",\n \"lessThan\": \"1732d89dfcd74f6fde9ce70900d316c4a151c153\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\",\n \"lessThan\": \"bee4b5b53e7bff0467fd916cc44c9b190733c6bd\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\",\n \"lessThan\": \"98917a499ec7064c14fc56d180a4fd636fc2784c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1196c36fd53c3b1615eb02f986cb727b1dfc1047\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bbc3aa6b0e6050b2b2e04a08dd4d6423d576b196\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6b96b2d473701b45df3fea8dd9796b6ec39e6d54\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"7405d73cea0d0e6c541f5c534078feeb46188844\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8777c9f654637d56f4c4ca54eb1bc7c609b70085\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6831c98ce0b8a3e88db64aa224372effd0dcc694\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"032951d32c13b7564dfba82758260cb7aa1149d2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"14877928f10667a5606383885d004f7185f33718\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"3.10.103\",\n \"lessThan\": \"3.11\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"3.12.63\",\n \"lessThan\": \"3.13\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"3.14.75\",\n \"lessThan\": \"3.15\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"3.16.39\",\n \"lessThan\": \"3.17\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"3.18.39\",\n \"lessThan\": \"3.19\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.1.30\",\n \"lessThan\": \"4.2\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.4.17\",\n \"lessThan\": \"4.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.6.6\",\n \"lessThan\": \"4.7\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\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 \"net/ceph/osdmap.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.7\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.7\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.265\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.216\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.183\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.148\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.101\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.42\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.6\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/2ceee3b77b83052648c40fef965f836fd7699d26","https://git.kernel.org/stable/c/e4473751cc37db41f3f7da25d64a23e0c74570f1","https://git.kernel.org/stable/c/f6961070c326bd158c38fa48756cde2bd78c4aaa","https://git.kernel.org/stable/c/05c90e059269f087becfcce23348496085835c29","https://git.kernel.org/stable/c/143ba49ead77ec483c0326f8aaad8649874e99c4","https://git.kernel.org/stable/c/1732d89dfcd74f6fde9ce70900d316c4a151c153","https://git.kernel.org/stable/c/bee4b5b53e7bff0467fd916cc44c9b190733c6bd","https://git.kernel.org/stable/c/98917a499ec7064c14fc56d180a4fd636fc2784c"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68158","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68158","identifiers":["CVE-2026-68158"]},"retained":false,"historicalAffected":[]}],"coverage":[]}