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CVE-2026-89496 (GCVE-0-2026-89496)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:43 – Updated: 2026-09-14 12:00
VLAI
Title
ocfs2: always run deallocs on copy-on-write completion
Summary
In the Linux kernel, the following vulnerability has been resolved: ocfs2: always run deallocs on copy-on-write completion Local fuzzing of 6.12.94 has found the following memory leak caused by doing 'copy_file_range()' within the same filesystem: unreferenced object 0xffff88812192c980 (size 32): comm "syz.0.49", pid 12095, jiffies 4294964143 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 08 00 00 00 00 00 00 00 ................ c0 c5 92 21 81 88 ff ff 00 02 00 00 00 06 00 00 ...!............ backtrace (crc 7068d63f): kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline] slab_post_alloc_hook mm/slub.c:4152 [inline] slab_alloc_node mm/slub.c:4197 [inline] __kmalloc_cache_noprof+0x168/0x2c0 mm/slub.c:4358 kmalloc_noprof include/linux/slab.h:878 [inline] ocfs2_find_per_slot_free_list fs/ocfs2/alloc.c:6618 [inline] ocfs2_cache_block_dealloc+0x155/0x4b0 fs/ocfs2/alloc.c:6786 ocfs2_cache_extent_block_free fs/ocfs2/alloc.c:6819 [inline] ocfs2_unlink_path+0x286/0x450 fs/ocfs2/alloc.c:2613 ocfs2_rotate_subtree_left fs/ocfs2/alloc.c:2779 [inline] __ocfs2_rotate_tree_left+0x1f6f/0x2da0 fs/ocfs2/alloc.c:2985 ocfs2_rotate_tree_left+0x283/0xe00 fs/ocfs2/alloc.c:3237 ocfs2_try_to_merge_extent+0xf56/0x1a20 fs/ocfs2/alloc.c:3825 ocfs2_split_extent+0x15f4/0x2940 fs/ocfs2/alloc.c:5138 ocfs2_clear_ext_refcount+0x2f6/0x550 fs/ocfs2/refcounttree.c:3098 ocfs2_replace_clusters fs/ocfs2/refcounttree.c:3131 [inline] ocfs2_make_clusters_writable fs/ocfs2/refcounttree.c:3255 [inline] ocfs2_replace_cow+0x991/0x1660 fs/ocfs2/refcounttree.c:3349 ocfs2_refcount_cow_hunk fs/ocfs2/refcounttree.c:3427 [inline] ocfs2_refcount_cow+0x5e1/0x9f0 fs/ocfs2/refcounttree.c:3470 ocfs2_prepare_inode_for_write fs/ocfs2/file.c:2340 [inline] ocfs2_file_write_iter+0xbda/0x1880 fs/ocfs2/file.c:2451 iter_file_splice_write+0x890/0xf60 fs/splice.c:743 do_splice_from fs/splice.c:944 [inline] direct_splice_actor+0x232/0x480 fs/splice.c:1167 splice_direct_to_actor+0x4b4/0xb60 fs/splice.c:1111 do_splice_direct_actor fs/splice.c:1210 [inline] do_splice_direct+0x10f/0x1c0 fs/splice.c:1236 do_sendfile+0x430/0xbf0 fs/read_write.c:1388 unreferenced object 0xffff88812192c5c0 (size 32): comm "syz.0.49", pid 12095, jiffies 4294964143 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 29 70 00 00 00 00 00 00 19 00 00 00 00 00 00 00 )p.............. backtrace (crc afec850f): kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline] slab_post_alloc_hook mm/slub.c:4152 [inline] slab_alloc_node mm/slub.c:4197 [inline] __kmalloc_cache_noprof+0x168/0x2c0 mm/slub.c:4358 kmalloc_noprof include/linux/slab.h:878 [inline] kzalloc_noprof include/linux/slab.h:1014 [inline] ocfs2_cache_block_dealloc+0x25c/0x4b0 fs/ocfs2/alloc.c:6793 ocfs2_cache_extent_block_free fs/ocfs2/alloc.c:6819 [inline] ocfs2_unlink_path+0x286/0x450 fs/ocfs2/alloc.c:2613 ocfs2_rotate_subtree_left fs/ocfs2/alloc.c:2779 [inline] __ocfs2_rotate_tree_left+0x1f6f/0x2da0 fs/ocfs2/alloc.c:2985 ocfs2_rotate_tree_left+0x283/0xe00 fs/ocfs2/alloc.c:3237 ocfs2_try_to_merge_extent+0xf56/0x1a20 fs/ocfs2/alloc.c:3825 ocfs2_split_extent+0x15f4/0x2940 fs/ocfs2/alloc.c:5138 ocfs2_clear_ext_refcount+0x2f6/0x550 fs/ocfs2/refcounttree.c:3098 ocfs2_replace_clusters fs/ocfs2/refcounttree.c:3131 [inline] ocfs2_make_clusters_writable fs/ocfs2/refcounttree.c:3255 [inline] ocfs2_replace_cow+0x991/0x1660 fs/ocfs2/refcounttree.c:3349 ocfs2_refcount_cow_hunk fs/ocfs2/refcounttree.c:3427 [inline] ocfs2_refcount_cow+0x5e1/0x9f0 fs/ocfs2/refcounttree.c:3470 ocfs2_prepare_inode_for_write fs/ocfs2/file.c:2340 [inline] ocfs2_file_write_iter+0xbda/0x1880 fs/ocfs2/file.c:2451 iter_file_splice_write+0x890/0xf60 fs/splice.c:743 do_splice_from fs/splice.c:9 ---truncated---
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6f70fa519976a379d72781d927cf8e5f5b05ec86 , < 5ff30f07def6d0e6edacf47952807b5ff60f3af6 (git)
Affected: 6f70fa519976a379d72781d927cf8e5f5b05ec86 , < 2753e12853ed2023555cec2c5fe22fbaabb2c0b7 (git)
Affected: 6f70fa519976a379d72781d927cf8e5f5b05ec86 , < f0261b3aca027f5c409a402ea22f6982750f911c (git)
Affected: 6f70fa519976a379d72781d927cf8e5f5b05ec86 , < a4adaa722977f46511d4247172cd4ec991b80ff2 (git)
Affected: 6f70fa519976a379d72781d927cf8e5f5b05ec86 , < 123c050eb96aae0bab74c9f06c6ad3de7992722b (git)
Affected: 6f70fa519976a379d72781d927cf8e5f5b05ec86 , < 71f07b7f90b3109c9098d1b9c8efbbeece5deb8a (git)
Affected: 6f70fa519976a379d72781d927cf8e5f5b05ec86 , < 09e93a60e18e83a630ff84ae00cb564bab96ab1f (git)
Affected: 6f70fa519976a379d72781d927cf8e5f5b05ec86 , < 82ea9d4fc05fb7a387db547c6a7c0aa6a3719616 (git)
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Linux Linux Affected: 2.6.32
Unaffected: 0 , < 2.6.32 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.109 , ≤ 6.12.* (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
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      "cpeApplicability": [
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              "negate": false,
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      "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 \u0027copy_file_range()\u0027 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---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T12:00:31.041Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5ff30f07def6d0e6edacf47952807b5ff60f3af6"
        },
        {
          "url": "https://git.kernel.org/stable/c/2753e12853ed2023555cec2c5fe22fbaabb2c0b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0261b3aca027f5c409a402ea22f6982750f911c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a4adaa722977f46511d4247172cd4ec991b80ff2"
        },
        {
          "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89496",
    "datePublished": "2026-09-11T19:43:46.772Z",
    "dateReserved": "2026-09-11T19:38:34.714Z",
    "dateUpdated": "2026-09-14T12:00:31.041Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-89496",
      "date": "2026-09-16",
      "epss": "0.00176",
      "percentile": "0.0743"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-15T01:47:56.000Z",
      "cve": "CVE-2026-89496",
      "id": "msrc_CVE-2026-89496",
      "initial_release_date": "2026-09-13T01:11:26.000Z",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ocfs2: always run deallocs on copy-on-write completion",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-89496.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-89496\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-11T20:19:31.657\",\"lastModified\":\"2026-09-14T13:19:06.767\",\"vulnStatus\":\"Received\",\"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 \u0027copy_file_range()\u0027 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\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/ocfs2/refcounttree.c\",\"fs/ocfs2/xattr.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6f70fa519976a379d72781d927cf8e5f5b05ec86\",\"lessThan\":\"5ff30f07def6d0e6edacf47952807b5ff60f3af6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6f70fa519976a379d72781d927cf8e5f5b05ec86\",\"lessThan\":\"2753e12853ed2023555cec2c5fe22fbaabb2c0b7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6f70fa519976a379d72781d927cf8e5f5b05ec86\",\"lessThan\":\"f0261b3aca027f5c409a402ea22f6982750f911c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6f70fa519976a379d72781d927cf8e5f5b05ec86\",\"lessThan\":\"a4adaa722977f46511d4247172cd4ec991b80ff2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6f70fa519976a379d72781d927cf8e5f5b05ec86\",\"lessThan\":\"123c050eb96aae0bab74c9f06c6ad3de7992722b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6f70fa519976a379d72781d927cf8e5f5b05ec86\",\"lessThan\":\"71f07b7f90b3109c9098d1b9c8efbbeece5deb8a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6f70fa519976a379d72781d927cf8e5f5b05ec86\",\"lessThan\":\"09e93a60e18e83a630ff84ae00cb564bab96ab1f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6f70fa519976a379d72781d927cf8e5f5b05ec86\",\"lessThan\":\"82ea9d4fc05fb7a387db547c6a7c0aa6a3719616\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/ocfs2/refcounttree.c\",\"fs/ocfs2/xattr.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.32\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.32\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.270\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.221\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.188\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.157\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.109\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.50\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.4\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"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/2753e12853ed2023555cec2c5fe22fbaabb2c0b7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5ff30f07def6d0e6edacf47952807b5ff60f3af6\",\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a4adaa722977f46511d4247172cd4ec991b80ff2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f0261b3aca027f5c409a402ea22f6982750f911c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-15T07:07:03+00:00",
      "cve": "CVE-2026-89496",
      "id": "CVE-2026-89496",
      "initial_release_date": "2026-09-11T00:00:00+00:00",
      "product_status:known_not_affected": "276",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ocfs2: always run deallocs on copy-on-write completion",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89496.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-16T00:02:50Z",
      "cve": "CVE-2026-89496",
      "id": "CVE-2026-89496",
      "initial_release_date": "2026-09-16T00:02:50Z",
      "product_status:known_affected": "353",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-89496",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-89496.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.