{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45961","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.089Z","datePublished":"2026-05-27T12:18:17.637Z","dateUpdated":"2026-05-27T12:18:17.637Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-27T12:18:17.637Z"},"descriptions":[{"lang":"en","value":"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to properly handle the withdrawal case where\nquota initialization succeeds but the filesystem is then withdrawn.\n\nThread leak backtrace (gfs2_freeze_lock_shared failure):\n  unreferenced object 0xffff88801d7bca80 (size 4480):\n    copy_process+0x3a1/0x4670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":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/gfs2/ops_fstype.c","fs/gfs2/super.c"],"versions":[{"version":"b66f723bb552ad59c2acb5d45ea45c890f84498b","lessThan":"e54229ecf49add8451d5f765a32c86ab4446e06c","status":"affected","versionType":"git"},{"version":"b66f723bb552ad59c2acb5d45ea45c890f84498b","lessThan":"da6f5bbc2e7902f578b503f2a4c3d8d09ca4b102","status":"affected","versionType":"git"},{"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","lessThan":"5.11","status":"affected","versionType":"semver"},{"version":"5.15.99","lessThan":"5.16","status":"affected","versionType":"semver"},{"version":"6.1.16","lessThan":"6.2","status":"affected","versionType":"semver"},{"version":"6.2.3","lessThan":"6.3","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/gfs2/ops_fstype.c","fs/gfs2/super.c"],"versions":[{"version":"6.3","status":"affected"},{"version":"0","lessThan":"6.3","status":"unaffected","versionType":"semver"},{"version":"6.19.4","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"7.0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.173"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.99"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e54229ecf49add8451d5f765a32c86ab4446e06c"},{"url":"https://git.kernel.org/stable/c/da6f5bbc2e7902f578b503f2a4c3d8d09ca4b102"}],"title":"gfs2: fix memory leaks in gfs2_fill_super error path","x_generator":{"engine":"bippy-1.2.0"}}}}