{"id":"CVE-2026-89608","revision":"fdc5781a38cb4e6eb9dd781c07f81801","records":[{"revision":"fdc5781a38cb4e6eb9dd781c07f81801","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89608","aliases":[],"title":"ecryptfs: pass packet set buffer size to parser","description":"In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: pass packet set buffer size to parser\n\necryptfs_parse_packet_set() receives a pointer into the file header, but\nit calculates the remaining packet buffer size from PAGE_SIZE - 8.  For\nversion 1 headers the packet set starts later in the header, so this can\noverstate the available buffer.\n\nPass the actual packet set buffer length from the caller and calculate\nper-packet limits from the remaining bytes in that buffer.  Recompute the\nremaining length after consuming a tag 3 packet before parsing the\nfollowing tag 11 packet.","state":0,"publishedAt":"2026-09-11T19:45:10.318+00:00","modifiedAt":"2026-10-19T08:49:40.341+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                        \"fs/ecryptfs/crypto.c\",\n                        \"fs/ecryptfs/ecryptfs_kernel.h\",\n                        \"fs/ecryptfs/keystore.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"237fead619984cc48818fe12ee0ceada3f55b012\",\n                            \"lessThan\": \"e7573b0e3058c6bbdfe81673f22c09900fde9e65\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"237fead619984cc48818fe12ee0ceada3f55b012\",\n                            \"lessThan\": \"66a87559ecb26afe80ad512faf728a158e2b81da\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"237fead619984cc48818fe12ee0ceada3f55b012\",\n                            \"lessThan\": \"3bd9bb3e167a7c14a50423f6ff03ee0fb007199d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"237fead619984cc48818fe12ee0ceada3f55b012\",\n                            \"lessThan\": \"749fa08d8f1b318bd8f4669a14a8a4a8c1bbdaac\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"237fead619984cc48818fe12ee0ceada3f55b012\",\n                            \"lessThan\": \"329de8b9e988b152b938f09224670d97bada0b96\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"237fead619984cc48818fe12ee0ceada3f55b012\",\n                            \"lessThan\": \"e5d254e654f2311a3c4b9c791d7f216554bcd17a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"237fead619984cc48818fe12ee0ceada3f55b012\",\n                            \"lessThan\": \"747fd45be396a6aea3420ab657a0ab4e60185b05\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"237fead619984cc48818fe12ee0ceada3f55b012\",\n                            \"lessThan\": \"2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2\",\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                        \"fs/ecryptfs/crypto.c\",\n                        \"fs/ecryptfs/ecryptfs_kernel.h\",\n                        \"fs/ecryptfs/keystore.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/e7573b0e3058c6bbdfe81673f22c09900fde9e65","https://git.kernel.org/stable/c/66a87559ecb26afe80ad512faf728a158e2b81da","https://git.kernel.org/stable/c/3bd9bb3e167a7c14a50423f6ff03ee0fb007199d","https://git.kernel.org/stable/c/749fa08d8f1b318bd8f4669a14a8a4a8c1bbdaac","https://git.kernel.org/stable/c/329de8b9e988b152b938f09224670d97bada0b96","https://git.kernel.org/stable/c/e5d254e654f2311a3c4b9c791d7f216554bcd17a","https://git.kernel.org/stable/c/747fd45be396a6aea3420ab657a0ab4e60185b05","https://git.kernel.org/stable/c/2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89608","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89608","identifiers":["CVE-2026-89608"]},"retained":false,"historicalAffected":[]}],"coverage":[]}