{"id":"CVE-2026-22991","revision":null,"records":[{"revision":"7090b537ed6749ad82f9679321699855","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-22991","aliases":[],"title":"libceph: make free_choose_arg_map() resilient to partial allocation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: make free_choose_arg_map() resilient to partial allocation\n\nfree_choose_arg_map() may dereference a NULL pointer if its caller fails\nafter a partial allocation.\n\nFor example, in decode_choose_args(), if allocation of arg_map->args\nfails, execution jumps to the fail label and free_choose_arg_map() is\ncalled. Since arg_map->size is updated to a non-zero value before memory\nallocation, free_choose_arg_map() will iterate over arg_map->args and\ndereference a NULL pointer.\n\nTo prevent this potential NULL pointer dereference and make\nfree_choose_arg_map() more resilient, add checks for pointers before\niterating.","state":0,"publishedAt":"2026-01-23T15:24:12.191+00:00","modifiedAt":"2026-10-19T18:25:26.442+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\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n \"lessThan\": \"9b3730dabcf3764bfe3ff07caf55e641a0b45234\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n \"lessThan\": \"851241d3f78a5505224dc21c03d8692f530256b4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n \"lessThan\": \"ec1850f663da64842614c86b20fe734be070c2ba\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n \"lessThan\": \"8081faaf089db5280c3be820948469f7c58ef8dd\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n \"lessThan\": \"c4c2152a858c0ce4d2bff6ca8c1d5b0ef9f2cbdf\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n \"lessThan\": \"f21c3fdb96833aac2f533506899fe38c19cf49d5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n \"lessThan\": \"e3fe30e57649c551757a02e1cad073c47e1e075e\",\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 \"net/ceph/osdmap.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.13\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.13\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.248\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.198\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.161\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.121\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.66\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.6\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.19\",\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:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/9b3730dabcf3764bfe3ff07caf55e641a0b45234","https://git.kernel.org/stable/c/851241d3f78a5505224dc21c03d8692f530256b4","https://git.kernel.org/stable/c/ec1850f663da64842614c86b20fe734be070c2ba","https://git.kernel.org/stable/c/8081faaf089db5280c3be820948469f7c58ef8dd","https://git.kernel.org/stable/c/c4c2152a858c0ce4d2bff6ca8c1d5b0ef9f2cbdf","https://git.kernel.org/stable/c/f21c3fdb96833aac2f533506899fe38c19cf49d5","https://git.kernel.org/stable/c/e3fe30e57649c551757a02e1cad073c47e1e075e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-22991","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-22991","identifiers":["CVE-2026-22991"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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