{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-45961", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-45961", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-05-27T12:18:17.637Z", "updatedAt": "2026-10-21T12:41:07.442Z", "importedAt": "2026-10-24T01:58:14.884Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "gfs2: fix memory leaks in gfs2_fill_super error path", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: fix memory leaks in gfs2_fill_super error path\n\nFix two memory leaks in the gfs2_fill_super() error handling path when\ntransitioning a filesystem to read-write mode fails.\n\nFirst leak: kthread objects (thread_struct, task_struct, etc.)\nWhen gfs2_freeze_lock_shared() fails after init_threads() succeeds, the\ncreated kernel threads (logd and quotad) are never destroyed. This\noccurs because the fail_per_node label doesn't call\ngfs2_destroy_threads().\n\nSecond leak: quota bitmap buffer (8192 bytes)\nWhen gfs2_make_fs_rw() fails after gfs2_quota_init() succeeds but\nbefore other operations complete, the allocated quota bitmap is never\nfreed.\n\nThe fix moves thread cleanup to the fail_per_node label to handle all\nerror paths uniformly. gfs2_destroy_threads() is safe to call\nunconditionally as it checks for NULL pointers. Quota cleanup is added\nin gfs2_make_fs_rw() to properly handle the withdrawal case where\nquota initialization succeeds but the filesystem is then withdrawn.\n\nThread leak backtrace (gfs2_freeze_lock_shared failure):\n unreferenced object 0xffff88801d7bca80 (size 4480):\n copy_process+0x3a1/0x4670 kernel/fork.c:2422\n kernel_clone+0xf3/0x6e0 kernel/fork.c:2779\n kthread_create_on_node+0x100/0x150 kernel/kthread.c:478\n init_threads+0xab/0x350 fs/gfs2/ops_fstype.c:611\n gfs2_fill_super+0xe5c/0x1240 fs/gfs2/ops_fstype.c:1265\n\nQuota leak backtrace (gfs2_make_fs_rw failure):\n unreferenced object 0xffff88812de7c000 (size 8192):\n gfs2_quota_init+0xe5/0x820 fs/gfs2/quota.c:1409\n gfs2_make_fs_rw+0x7a/0xe0 fs/gfs2/super.c:149\n gfs2_fill_super+0xfbb/0x1240 fs/gfs2/ops_fstype.c:1275", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "b66f723bb552ad59c2acb5d45ea45c890f84498b", "status": "affected", "versionType": "git", "lessThan": "4db5e4c8f1103b21005ab9e7fe9a5d2554438b74" }, { "version": "b66f723bb552ad59c2acb5d45ea45c890f84498b", "status": "affected", "versionType": "git", "lessThan": "d049ba2c1723110f82227eaf521427980811169b" }, { "version": "b66f723bb552ad59c2acb5d45ea45c890f84498b", "status": "affected", "versionType": "git", "lessThan": "4456be93464a599eac0eb2afa63b5d662e1599d8" }, { "version": "b66f723bb552ad59c2acb5d45ea45c890f84498b", "status": "affected", "versionType": "git", "lessThan": "e54229ecf49add8451d5f765a32c86ab4446e06c" }, { "version": "b66f723bb552ad59c2acb5d45ea45c890f84498b", "status": "affected", "versionType": "git", "lessThan": "da6f5bbc2e7902f578b503f2a4c3d8d09ca4b102" }, { "version": "2f8623377f3e0cfaa80558631b8694d02a492b4c", "status": "affected", "versionType": "git" }, { "version": "c713ebf2fe3f469e4af4de60a3427689ffb7c5d7", "status": "affected", "versionType": "git" }, { "version": "c2191e507147b1a22e9170ebb2aaa0f2902fcbfa", "status": "affected", "versionType": "git" }, { "version": "9fc32dad3cdba18669c71893f3e6d96905b39b3f", "status": "affected", "versionType": "git" }, { "version": "5.10.173", "status": "affected", "versionType": "semver", "lessThan": "5.11" }, { "version": "5.15.99", "status": "affected", "versionType": "semver", "lessThan": "5.16" }, { "version": "6.1.16", "status": "affected", "versionType": "semver", "lessThan": "6.2" }, { "version": "6.2.3", "status": "affected", "versionType": "semver", "lessThan": "6.3" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.3" }, { "version": "6.6.160", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.114", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.57", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "6.19.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.19.*" }, { "version": "7.0", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }