{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89496", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.714Z", "datePublished": "2026-09-11T19:43:46.772Z", "dateUpdated": "2026-09-11T19:43:46.772Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:43:46.772Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: always run deallocs on copy-on-write completion\n\nLocal fuzzing of 6.12.94 has found the following memory leak\ncaused by doing 'copy_file_range()' within the same filesystem:\n\nunreferenced object 0xffff88812192c980 (size 32):\n comm \"syz.0.49\", pid 12095, jiffies 4294964143\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 08 00 00 00 00 00 00 00 ................\n c0 c5 92 21 81 88 ff ff 00 02 00 00 00 06 00 00 ...!............\n backtrace (crc 7068d63f):\n kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline]\n slab_post_alloc_hook mm/slub.c:4152 [inline]\n slab_alloc_node mm/slub.c:4197 [inline]\n __kmalloc_cache_noprof+0x168/0x2c0 mm/slub.c:4358\n kmalloc_noprof include/linux/slab.h:878 [inline]\n ocfs2_find_per_slot_free_list fs/ocfs2/alloc.c:6618 [inline]\n ocfs2_cache_block_dealloc+0x155/0x4b0 fs/ocfs2/alloc.c:6786\n ocfs2_cache_extent_block_free fs/ocfs2/alloc.c:6819 [inline]\n ocfs2_unlink_path+0x286/0x450 fs/ocfs2/alloc.c:2613\n ocfs2_rotate_subtree_left fs/ocfs2/alloc.c:2779 [inline]\n __ocfs2_rotate_tree_left+0x1f6f/0x2da0 fs/ocfs2/alloc.c:2985\n ocfs2_rotate_tree_left+0x283/0xe00 fs/ocfs2/alloc.c:3237\n ocfs2_try_to_merge_extent+0xf56/0x1a20 fs/ocfs2/alloc.c:3825\n ocfs2_split_extent+0x15f4/0x2940 fs/ocfs2/alloc.c:5138\n ocfs2_clear_ext_refcount+0x2f6/0x550 fs/ocfs2/refcounttree.c:3098\n ocfs2_replace_clusters fs/ocfs2/refcounttree.c:3131 [inline]\n ocfs2_make_clusters_writable fs/ocfs2/refcounttree.c:3255 [inline]\n ocfs2_replace_cow+0x991/0x1660 fs/ocfs2/refcounttree.c:3349\n ocfs2_refcount_cow_hunk fs/ocfs2/refcounttree.c:3427 [inline]\n ocfs2_refcount_cow+0x5e1/0x9f0 fs/ocfs2/refcounttree.c:3470\n ocfs2_prepare_inode_for_write fs/ocfs2/file.c:2340 [inline]\n ocfs2_file_write_iter+0xbda/0x1880 fs/ocfs2/file.c:2451\n iter_file_splice_write+0x890/0xf60 fs/splice.c:743\n do_splice_from fs/splice.c:944 [inline]\n direct_splice_actor+0x232/0x480 fs/splice.c:1167\n splice_direct_to_actor+0x4b4/0xb60 fs/splice.c:1111\n do_splice_direct_actor fs/splice.c:1210 [inline]\n do_splice_direct+0x10f/0x1c0 fs/splice.c:1236\n do_sendfile+0x430/0xbf0 fs/read_write.c:1388\n\nunreferenced object 0xffff88812192c5c0 (size 32):\n comm \"syz.0.49\", pid 12095, jiffies 4294964143\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 29 70 00 00 00 00 00 00 19 00 00 00 00 00 00 00 )p..............\n backtrace (crc afec850f):\n kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline]\n slab_post_alloc_hook mm/slub.c:4152 [inline]\n slab_alloc_node mm/slub.c:4197 [inline]\n __kmalloc_cache_noprof+0x168/0x2c0 mm/slub.c:4358\n kmalloc_noprof include/linux/slab.h:878 [inline]\n kzalloc_noprof include/linux/slab.h:1014 [inline]\n ocfs2_cache_block_dealloc+0x25c/0x4b0 fs/ocfs2/alloc.c:6793\n ocfs2_cache_extent_block_free fs/ocfs2/alloc.c:6819 [inline]\n ocfs2_unlink_path+0x286/0x450 fs/ocfs2/alloc.c:2613\n ocfs2_rotate_subtree_left fs/ocfs2/alloc.c:2779 [inline]\n __ocfs2_rotate_tree_left+0x1f6f/0x2da0 fs/ocfs2/alloc.c:2985\n ocfs2_rotate_tree_left+0x283/0xe00 fs/ocfs2/alloc.c:3237\n ocfs2_try_to_merge_extent+0xf56/0x1a20 fs/ocfs2/alloc.c:3825\n ocfs2_split_extent+0x15f4/0x2940 fs/ocfs2/alloc.c:5138\n ocfs2_clear_ext_refcount+0x2f6/0x550 fs/ocfs2/refcounttree.c:3098\n ocfs2_replace_clusters fs/ocfs2/refcounttree.c:3131 [inline]\n ocfs2_make_clusters_writable fs/ocfs2/refcounttree.c:3255 [inline]\n ocfs2_replace_cow+0x991/0x1660 fs/ocfs2/refcounttree.c:3349\n ocfs2_refcount_cow_hunk fs/ocfs2/refcounttree.c:3427 [inline]\n ocfs2_refcount_cow+0x5e1/0x9f0 fs/ocfs2/refcounttree.c:3470\n ocfs2_prepare_inode_for_write fs/ocfs2/file.c:2340 [inline]\n ocfs2_file_write_iter+0xbda/0x1880 fs/ocfs2/file.c:2451\n iter_file_splice_write+0x890/0xf60 fs/splice.c:743\n do_splice_from fs/splice.c:9\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ocfs2/refcounttree.c", "fs/ocfs2/xattr.c"], "versions": [{"version": "6f70fa519976a379d72781d927cf8e5f5b05ec86", "lessThan": "123c050eb96aae0bab74c9f06c6ad3de7992722b", "status": "affected", "versionType": "git"}, {"version": "6f70fa519976a379d72781d927cf8e5f5b05ec86", "lessThan": "71f07b7f90b3109c9098d1b9c8efbbeece5deb8a", "status": "affected", "versionType": "git"}, {"version": "6f70fa519976a379d72781d927cf8e5f5b05ec86", "lessThan": "09e93a60e18e83a630ff84ae00cb564bab96ab1f", "status": "affected", "versionType": "git"}, {"version": "6f70fa519976a379d72781d927cf8e5f5b05ec86", "lessThan": "82ea9d4fc05fb7a387db547c6a7c0aa6a3719616", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ocfs2/refcounttree.c", "fs/ocfs2/xattr.c"], "versions": [{"version": "2.6.32", "status": "affected"}, {"version": "0", "lessThan": "2.6.32", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "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": "2.6.32", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "7.3-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/123c050eb96aae0bab74c9f06c6ad3de7992722b"}, {"url": "https://git.kernel.org/stable/c/71f07b7f90b3109c9098d1b9c8efbbeece5deb8a"}, {"url": "https://git.kernel.org/stable/c/09e93a60e18e83a630ff84ae00cb564bab96ab1f"}, {"url": "https://git.kernel.org/stable/c/82ea9d4fc05fb7a387db547c6a7c0aa6a3719616"}], "title": "ocfs2: always run deallocs on copy-on-write completion", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/ocfs2/refcounttree.c", "fs/ocfs2/xattr.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "123c050eb96aae0bab74c9f06c6ad3de7992722b", "status": "affected", "version": "6f70fa519976a379d72781d927cf8e5f5b05ec86", "versionType": "git"}, {"lessThan": "71f07b7f90b3109c9098d1b9c8efbbeece5deb8a", "status": "affected", "version": "6f70fa519976a379d72781d927cf8e5f5b05ec86", "versionType": "git"}, {"lessThan": "09e93a60e18e83a630ff84ae00cb564bab96ab1f", "status": "affected", "version": "6f70fa519976a379d72781d927cf8e5f5b05ec86", "versionType": "git"}, {"lessThan": "82ea9d4fc05fb7a387db547c6a7c0aa6a3719616", "status": "affected", "version": "6f70fa519976a379d72781d927cf8e5f5b05ec86", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/ocfs2/refcounttree.c", "fs/ocfs2/xattr.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.32"}, {"lessThan": "2.6.32", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: always run deallocs on copy-on-write completion\n\nLocal fuzzing of 6.12.94 has found the following memory leak\ncaused by doing 'copy_file_range()' within the same filesystem:\n\nunreferenced object 0xffff88812192c980 (size 32):\n comm \"syz.0.49\", pid 12095, jiffies 4294964143\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 08 00 00 00 00 00 00 00 ................\n c0 c5 92 21 81 88 ff ff 00 02 00 00 00 06 00 00 ...!............\n backtrace (crc 7068d63f):\n kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline]\n slab_post_alloc_hook mm/slub.c:4152 [inline]\n slab_alloc_node mm/slub.c:4197 [inline]\n __kmalloc_cache_noprof+0x168/0x2c0 mm/slub.c:4358\n kmalloc_noprof include/linux/slab.h:878 [inline]\n ocfs2_find_per_slot_free_list fs/ocfs2/alloc.c:6618 [inline]\n ocfs2_cache_block_dealloc+0x155/0x4b0 fs/ocfs2/alloc.c:6786\n ocfs2_cache_extent_block_free fs/ocfs2/alloc.c:6819 [inline]\n ocfs2_unlink_path+0x286/0x450 fs/ocfs2/alloc.c:2613\n ocfs2_rotate_subtree_left fs/ocfs2/alloc.c:2779 [inline]\n __ocfs2_rotate_tree_left+0x1f6f/0x2da0 fs/ocfs2/alloc.c:2985\n ocfs2_rotate_tree_left+0x283/0xe00 fs/ocfs2/alloc.c:3237\n ocfs2_try_to_merge_extent+0xf56/0x1a20 fs/ocfs2/alloc.c:3825\n ocfs2_split_extent+0x15f4/0x2940 fs/ocfs2/alloc.c:5138\n ocfs2_clear_ext_refcount+0x2f6/0x550 fs/ocfs2/refcounttree.c:3098\n ocfs2_replace_clusters fs/ocfs2/refcounttree.c:3131 [inline]\n ocfs2_make_clusters_writable fs/ocfs2/refcounttree.c:3255 [inline]\n ocfs2_replace_cow+0x991/0x1660 fs/ocfs2/refcounttree.c:3349\n ocfs2_refcount_cow_hunk fs/ocfs2/refcounttree.c:3427 [inline]\n ocfs2_refcount_cow+0x5e1/0x9f0 fs/ocfs2/refcounttree.c:3470\n ocfs2_prepare_inode_for_write fs/ocfs2/file.c:2340 [inline]\n ocfs2_file_write_iter+0xbda/0x1880 fs/ocfs2/file.c:2451\n iter_file_splice_write+0x890/0xf60 fs/splice.c:743\n do_splice_from fs/splice.c:944 [inline]\n direct_splice_actor+0x232/0x480 fs/splice.c:1167\n splice_direct_to_actor+0x4b4/0xb60 fs/splice.c:1111\n do_splice_direct_actor fs/splice.c:1210 [inline]\n do_splice_direct+0x10f/0x1c0 fs/splice.c:1236\n do_sendfile+0x430/0xbf0 fs/read_write.c:1388\n\nunreferenced object 0xffff88812192c5c0 (size 32):\n comm \"syz.0.49\", pid 12095, jiffies 4294964143\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 29 70 00 00 00 00 00 00 19 00 00 00 00 00 00 00 )p..............\n backtrace (crc afec850f):\n kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline]\n slab_post_alloc_hook mm/slub.c:4152 [inline]\n slab_alloc_node mm/slub.c:4197 [inline]\n __kmalloc_cache_noprof+0x168/0x2c0 mm/slub.c:4358\n kmalloc_noprof include/linux/slab.h:878 [inline]\n kzalloc_noprof include/linux/slab.h:1014 [inline]\n ocfs2_cache_block_dealloc+0x25c/0x4b0 fs/ocfs2/alloc.c:6793\n ocfs2_cache_extent_block_free fs/ocfs2/alloc.c:6819 [inline]\n ocfs2_unlink_path+0x286/0x450 fs/ocfs2/alloc.c:2613\n ocfs2_rotate_subtree_left fs/ocfs2/alloc.c:2779 [inline]\n __ocfs2_rotate_tree_left+0x1f6f/0x2da0 fs/ocfs2/alloc.c:2985\n ocfs2_rotate_tree_left+0x283/0xe00 fs/ocfs2/alloc.c:3237\n ocfs2_try_to_merge_extent+0xf56/0x1a20 fs/ocfs2/alloc.c:3825\n ocfs2_split_extent+0x15f4/0x2940 fs/ocfs2/alloc.c:5138\n ocfs2_clear_ext_refcount+0x2f6/0x550 fs/ocfs2/refcounttree.c:3098\n ocfs2_replace_clusters fs/ocfs2/refcounttree.c:3131 [inline]\n ocfs2_make_clusters_writable fs/ocfs2/refcounttree.c:3255 [inline]\n ocfs2_replace_cow+0x991/0x1660 fs/ocfs2/refcounttree.c:3349\n ocfs2_refcount_cow_hunk fs/ocfs2/refcounttree.c:3427 [inline]\n ocfs2_refcount_cow+0x5e1/0x9f0 fs/ocfs2/refcounttree.c:3470\n ocfs2_prepare_inode_for_write fs/ocfs2/file.c:2340 [inline]\n ocfs2_file_write_iter+0xbda/0x1880 fs/ocfs2/file.c:2451\n iter_file_splice_write+0x890/0xf60 fs/splice.c:743\n do_splice_from fs/splice.c:9\n---truncated---"}], "id": "CVE-2026-89496", "lastModified": "2026-09-11T20:19:31.657", "metrics": {}, "published": "2026-09-11T20:19:31.657", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/09e93a60e18e83a630ff84ae00cb564bab96ab1f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/123c050eb96aae0bab74c9f06c6ad3de7992722b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/71f07b7f90b3109c9098d1b9c8efbbeece5deb8a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/82ea9d4fc05fb7a387db547c6a7c0aa6a3719616"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ocfs2: Denial of Service due to memory leak via copy_file_range()", "id": "2532512", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532512"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in ocfs2, the Oracle Cluster File System, within the Linux kernel. A local user could exploit this vulnerability by performing a `copy_file_range()` operation within the same filesystem. This can lead to a memory leak, potentially causing resource exhaustion and a Denial of Service (DoS) on the system."], "name": "CVE-2026-89496", "public_date": "2026-09-11T19:43:46Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89496\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89496\nhttps://git.kernel.org/stable/c/09e93a60e18e83a630ff84ae00cb564bab96ab1f\nhttps://git.kernel.org/stable/c/123c050eb96aae0bab74c9f06c6ad3de7992722b\nhttps://git.kernel.org/stable/c/71f07b7f90b3109c9098d1b9c8efbbeece5deb8a\nhttps://git.kernel.org/stable/c/82ea9d4fc05fb7a387db547c6a7c0aa6a3719616"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6f70fa519976a379d72781d927cf8e5f5b05ec86,123c050eb96aae0bab74c9f06c6ad3de7992722b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6f70fa519976a379d72781d927cf8e5f5b05ec86,71f07b7f90b3109c9098d1b9c8efbbeece5deb8a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6f70fa519976a379d72781d927cf8e5f5b05ec86,09e93a60e18e83a630ff84ae00cb564bab96ab1f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6f70fa519976a379d72781d927cf8e5f5b05ec86,82ea9d4fc05fb7a387db547c6a7c0aa6a3719616)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.32"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.32)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-12T16:30:13.325901+00:00", "updated": "2026-09-12T23:00:14.742326+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}