{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "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---",
  "id": "DEBIAN-CVE-2026-89496",
  "modified": "2026-09-15T08:47:31.092991414Z",
  "published": "2026-09-11T20:19:31.657Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-89496"
    }
  ],
  "upstream": [
    "CVE-2026-89496"
  ]
}