{"id":"CVE-2026-89602","revision":"8905a7821c314900943bc502e497fda8","records":[{"revision":"8905a7821c314900943bc502e497fda8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89602","aliases":[],"title":"erofs: skip sufficiently large global buffers when resizing","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: skip sufficiently large global buffers when resizing\n\nz_erofs_gbuf_nrpages is advanced only after every global buffer has been\ngrown. If a resize fails after some buffers were enlarged, a retry\nrevisits those enlarged buffers.\n\nRetrying the same size then returns -ENOMEM because alloc_pages_bulk()\nhas no pages to add and the unchanged return value is treated as a\nfailure. Retrying an intermediate size allocates a temporary pointer\narray smaller than gbuf->nrpages and copies more existing pointers than\nthe array can hold.\n\nSkip buffers that already satisfy the request. Once all remaining\nbuffers have caught up, advancing z_erofs_gbuf_nrpages again describes\nthe guaranteed minimum size across the pool.","state":0,"publishedAt":"2026-09-11T19:45:05.783+00:00","modifiedAt":"2026-10-19T08:49:34.524+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/erofs/zutil.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"d6db47e571dcaecaeaafa8840d00ae849ae3907b\",\n                            \"lessThan\": \"3fbdd15d5830f52661eb78be95058d101cb0c2cb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d6db47e571dcaecaeaafa8840d00ae849ae3907b\",\n                            \"lessThan\": \"7267557ce98ccd07faaf3bc86382448950cc4ff6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d6db47e571dcaecaeaafa8840d00ae849ae3907b\",\n                            \"lessThan\": \"7f4a89d4f0d6acaf4b756c31de48f2109a257b70\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d6db47e571dcaecaeaafa8840d00ae849ae3907b\",\n                            \"lessThan\": \"a7d097cf01301c5da37927c8f26123d006f0fd8a\",\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/erofs/zutil.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\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:N/UI:R/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/3fbdd15d5830f52661eb78be95058d101cb0c2cb","https://git.kernel.org/stable/c/7267557ce98ccd07faaf3bc86382448950cc4ff6","https://git.kernel.org/stable/c/7f4a89d4f0d6acaf4b756c31de48f2109a257b70","https://git.kernel.org/stable/c/a7d097cf01301c5da37927c8f26123d006f0fd8a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89602","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89602","identifiers":["CVE-2026-89602"]},"retained":false,"historicalAffected":[]}],"coverage":[]}