CVE-2022-50432 (GCVE-0-2022-50432)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:42 – Updated: 2026-05-11 19:19
VLAI
Title
kernfs: fix use-after-free in __kernfs_remove
Summary
In the Linux kernel, the following vulnerability has been resolved: kernfs: fix use-after-free in __kernfs_remove Syzkaller managed to trigger concurrent calls to kernfs_remove_by_name_ns() for the same file resulting in a KASAN detected use-after-free. The race occurs when the root node is freed during kernfs_drain(). To prevent this acquire an additional reference for the root of the tree that is removed before calling __kernfs_remove(). Found by syzkaller with the following reproducer (slab_nomerge is required): syz_mount_image$ext4(0x0, &(0x7f0000000100)='./file0\x00', 0x100000, 0x0, 0x0, 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='/proc/self/exe\x00', 0x0, 0x0) close(r0) pipe2(&(0x7f0000000140)={0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x800) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f00000000c0), 0x408, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[{@cache_loose}, {@mmap}, {@loose}, {@loose}, {@mmap}], [{@mask={'mask', 0x3d, '^MAY_EXEC'}}, {@fsmagic={'fsmagic', 0x3d, 0x10001}}, {@dont_hash}]}}) Sample report: ================================================================== BUG: KASAN: use-after-free in kernfs_type include/linux/kernfs.h:335 [inline] BUG: KASAN: use-after-free in kernfs_leftmost_descendant fs/kernfs/dir.c:1261 [inline] BUG: KASAN: use-after-free in __kernfs_remove.part.0+0x843/0x960 fs/kernfs/dir.c:1369 Read of size 2 at addr ffff8880088807f0 by task syz-executor.2/857 CPU: 0 PID: 857 Comm: syz-executor.2 Not tainted 6.0.0-rc3-00363-g7726d4c3e60b #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x6e/0x91 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x5e/0x5e5 mm/kasan/report.c:433 kasan_report+0xa3/0x130 mm/kasan/report.c:495 kernfs_type include/linux/kernfs.h:335 [inline] kernfs_leftmost_descendant fs/kernfs/dir.c:1261 [inline] __kernfs_remove.part.0+0x843/0x960 fs/kernfs/dir.c:1369 __kernfs_remove fs/kernfs/dir.c:1356 [inline] kernfs_remove_by_name_ns+0x108/0x190 fs/kernfs/dir.c:1589 sysfs_slab_add+0x133/0x1e0 mm/slub.c:5943 __kmem_cache_create+0x3e0/0x550 mm/slub.c:4899 create_cache mm/slab_common.c:229 [inline] kmem_cache_create_usercopy+0x167/0x2a0 mm/slab_common.c:335 p9_client_create+0xd4d/0x1190 net/9p/client.c:993 v9fs_session_init+0x1e6/0x13c0 fs/9p/v9fs.c:408 v9fs_mount+0xb9/0xbd0 fs/9p/vfs_super.c:126 legacy_get_tree+0xf1/0x200 fs/fs_context.c:610 vfs_get_tree+0x85/0x2e0 fs/super.c:1530 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x675/0x1d00 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x282/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f725f983aed Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f725f0f7028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f725faa3f80 RCX: 00007f725f983aed RDX: 00000000200000c0 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007f725f9f419c R08: 0000000020000280 R09: 0000000000000000 R10: 0000000000000408 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f725faa3f80 R15: 00007f725f0d7000 </TASK> Allocated by task 855: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:470 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:7 ---truncated---
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 45a140e587f3d32d8d424ed940dffb61e1739047 , < 4dfd6a477a1525773469feaf3c514b2c0fef76b5 (git)
Affected: 45a140e587f3d32d8d424ed940dffb61e1739047 , < 02eb35131050735332658029082f61515b7dfe38 (git)
Affected: 45a140e587f3d32d8d424ed940dffb61e1739047 , < 028cf780743eea79abffa7206b9dcfc080ad3546 (git)
Affected: 45a140e587f3d32d8d424ed940dffb61e1739047 , < c78b0dc6fb7fb389d674e491fd376388cdfb1d53 (git)
Affected: 45a140e587f3d32d8d424ed940dffb61e1739047 , < 6f72a3977ba9d0e5491a5c01315204272e7f9c44 (git)
Affected: 45a140e587f3d32d8d424ed940dffb61e1739047 , < 94d2643df1e70a4c310ebb5e2c493eec33df1a06 (git)
Affected: 45a140e587f3d32d8d424ed940dffb61e1739047 , < af1b57cc39beca203559576b3046094fc9e5eb32 (git)
Affected: 45a140e587f3d32d8d424ed940dffb61e1739047 , < 4abc99652812a2ddf932f137515d5c5a04723538 (git)
Create a notification for this product.
Linux Linux Affected: 3.14
Unaffected: 0 , < 3.14 (semver)
Unaffected: 4.9.332 , ≤ 4.9.* (semver)
Unaffected: 4.14.298 , ≤ 4.14.* (semver)
Unaffected: 4.19.264 , ≤ 4.19.* (semver)
Unaffected: 5.4.223 , ≤ 5.4.* (semver)
Unaffected: 5.10.153 , ≤ 5.10.* (semver)
Unaffected: 5.15.77 , ≤ 5.15.* (semver)
Unaffected: 6.0.7 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
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            },
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              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.223",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
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            {
              "lessThanOrEqual": "5.15.*",
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      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkernfs: fix use-after-free in __kernfs_remove\n\nSyzkaller managed to trigger concurrent calls to\nkernfs_remove_by_name_ns() for the same file resulting in\na KASAN detected use-after-free. The race occurs when the root\nnode is freed during kernfs_drain().\n\nTo prevent this acquire an additional reference for the root\nof the tree that is removed before calling __kernfs_remove().\n\nFound by syzkaller with the following reproducer (slab_nomerge is\nrequired):\n\nsyz_mount_image$ext4(0x0, \u0026(0x7f0000000100)=\u0027./file0\\x00\u0027, 0x100000, 0x0, 0x0, 0x0, 0x0)\nr0 = openat(0xffffffffffffff9c, \u0026(0x7f0000000080)=\u0027/proc/self/exe\\x00\u0027, 0x0, 0x0)\nclose(r0)\npipe2(\u0026(0x7f0000000140)={0xffffffffffffffff, \u003cr1=\u003e0xffffffffffffffff}, 0x800)\nmount$9p_fd(0x0, \u0026(0x7f0000000040)=\u0027./file0\\x00\u0027, \u0026(0x7f00000000c0), 0x408, \u0026(0x7f0000000280)={\u0027trans=fd,\u0027, {\u0027rfdno\u0027, 0x3d, r0}, 0x2c, {\u0027wfdno\u0027, 0x3d, r1}, 0x2c, {[{@cache_loose}, {@mmap}, {@loose}, {@loose}, {@mmap}], [{@mask={\u0027mask\u0027, 0x3d, \u0027^MAY_EXEC\u0027}}, {@fsmagic={\u0027fsmagic\u0027, 0x3d, 0x10001}}, {@dont_hash}]}})\n\nSample report:\n\n==================================================================\nBUG: KASAN: use-after-free in kernfs_type include/linux/kernfs.h:335 [inline]\nBUG: KASAN: use-after-free in kernfs_leftmost_descendant fs/kernfs/dir.c:1261 [inline]\nBUG: KASAN: use-after-free in __kernfs_remove.part.0+0x843/0x960 fs/kernfs/dir.c:1369\nRead of size 2 at addr ffff8880088807f0 by task syz-executor.2/857\n\nCPU: 0 PID: 857 Comm: syz-executor.2 Not tainted 6.0.0-rc3-00363-g7726d4c3e60b #5\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x6e/0x91 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:317 [inline]\n print_report.cold+0x5e/0x5e5 mm/kasan/report.c:433\n kasan_report+0xa3/0x130 mm/kasan/report.c:495\n kernfs_type include/linux/kernfs.h:335 [inline]\n kernfs_leftmost_descendant fs/kernfs/dir.c:1261 [inline]\n __kernfs_remove.part.0+0x843/0x960 fs/kernfs/dir.c:1369\n __kernfs_remove fs/kernfs/dir.c:1356 [inline]\n kernfs_remove_by_name_ns+0x108/0x190 fs/kernfs/dir.c:1589\n sysfs_slab_add+0x133/0x1e0 mm/slub.c:5943\n __kmem_cache_create+0x3e0/0x550 mm/slub.c:4899\n create_cache mm/slab_common.c:229 [inline]\n kmem_cache_create_usercopy+0x167/0x2a0 mm/slab_common.c:335\n p9_client_create+0xd4d/0x1190 net/9p/client.c:993\n v9fs_session_init+0x1e6/0x13c0 fs/9p/v9fs.c:408\n v9fs_mount+0xb9/0xbd0 fs/9p/vfs_super.c:126\n legacy_get_tree+0xf1/0x200 fs/fs_context.c:610\n vfs_get_tree+0x85/0x2e0 fs/super.c:1530\n do_new_mount fs/namespace.c:3040 [inline]\n path_mount+0x675/0x1d00 fs/namespace.c:3370\n do_mount fs/namespace.c:3383 [inline]\n __do_sys_mount fs/namespace.c:3591 [inline]\n __se_sys_mount fs/namespace.c:3568 [inline]\n __x64_sys_mount+0x282/0x300 fs/namespace.c:3568\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x38/0x90 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7f725f983aed\nCode: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f725f0f7028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5\nRAX: ffffffffffffffda RBX: 00007f725faa3f80 RCX: 00007f725f983aed\nRDX: 00000000200000c0 RSI: 0000000020000040 RDI: 0000000000000000\nRBP: 00007f725f9f419c R08: 0000000020000280 R09: 0000000000000000\nR10: 0000000000000408 R11: 0000000000000246 R12: 0000000000000000\nR13: 0000000000000006 R14: 00007f725faa3f80 R15: 00007f725f0d7000\n \u003c/TASK\u003e\n\nAllocated by task 855:\n kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38\n kasan_set_track mm/kasan/common.c:45 [inline]\n set_alloc_info mm/kasan/common.c:437 [inline]\n __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:470\n kasan_slab_alloc include/linux/kasan.h:224 [inline]\n slab_post_alloc_hook mm/slab.h:7\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:19:22.953Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4dfd6a477a1525773469feaf3c514b2c0fef76b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/02eb35131050735332658029082f61515b7dfe38"
        },
        {
          "url": "https://git.kernel.org/stable/c/028cf780743eea79abffa7206b9dcfc080ad3546"
        },
        {
          "url": "https://git.kernel.org/stable/c/c78b0dc6fb7fb389d674e491fd376388cdfb1d53"
        },
        {
          "url": "https://git.kernel.org/stable/c/6f72a3977ba9d0e5491a5c01315204272e7f9c44"
        },
        {
          "url": "https://git.kernel.org/stable/c/94d2643df1e70a4c310ebb5e2c493eec33df1a06"
        },
        {
          "url": "https://git.kernel.org/stable/c/af1b57cc39beca203559576b3046094fc9e5eb32"
        },
        {
          "url": "https://git.kernel.org/stable/c/4abc99652812a2ddf932f137515d5c5a04723538"
        }
      ],
      "title": "kernfs: fix use-after-free in __kernfs_remove",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50432",
    "datePublished": "2025-10-01T11:42:10.573Z",
    "dateReserved": "2025-09-17T14:53:07.009Z",
    "dateUpdated": "2026-05-11T19:19:22.953Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50432",
      "date": "2026-07-23",
      "epss": "0.0015",
      "percentile": "0.04682"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50432\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-01T12:15:34.977\",\"lastModified\":\"2026-06-17T05:23:32.703\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nkernfs: fix use-after-free in __kernfs_remove\\n\\nSyzkaller managed to trigger concurrent calls to\\nkernfs_remove_by_name_ns() for the same file resulting in\\na KASAN detected use-after-free. The race occurs when the root\\nnode is freed during kernfs_drain().\\n\\nTo prevent this acquire an additional reference for the root\\nof the tree that is removed before calling __kernfs_remove().\\n\\nFound by syzkaller with the following reproducer (slab_nomerge is\\nrequired):\\n\\nsyz_mount_image$ext4(0x0, \u0026(0x7f0000000100)=\u0027./file0\\\\x00\u0027, 0x100000, 0x0, 0x0, 0x0, 0x0)\\nr0 = openat(0xffffffffffffff9c, \u0026(0x7f0000000080)=\u0027/proc/self/exe\\\\x00\u0027, 0x0, 0x0)\\nclose(r0)\\npipe2(\u0026(0x7f0000000140)={0xffffffffffffffff, \u003cr1=\u003e0xffffffffffffffff}, 0x800)\\nmount$9p_fd(0x0, \u0026(0x7f0000000040)=\u0027./file0\\\\x00\u0027, \u0026(0x7f00000000c0), 0x408, \u0026(0x7f0000000280)={\u0027trans=fd,\u0027, {\u0027rfdno\u0027, 0x3d, r0}, 0x2c, {\u0027wfdno\u0027, 0x3d, r1}, 0x2c, {[{@cache_loose}, {@mmap}, {@loose}, {@loose}, {@mmap}], [{@mask={\u0027mask\u0027, 0x3d, \u0027^MAY_EXEC\u0027}}, {@fsmagic={\u0027fsmagic\u0027, 0x3d, 0x10001}}, {@dont_hash}]}})\\n\\nSample report:\\n\\n==================================================================\\nBUG: KASAN: use-after-free in kernfs_type include/linux/kernfs.h:335 [inline]\\nBUG: KASAN: use-after-free in kernfs_leftmost_descendant fs/kernfs/dir.c:1261 [inline]\\nBUG: KASAN: use-after-free in __kernfs_remove.part.0+0x843/0x960 fs/kernfs/dir.c:1369\\nRead of size 2 at addr ffff8880088807f0 by task syz-executor.2/857\\n\\nCPU: 0 PID: 857 Comm: syz-executor.2 Not tainted 6.0.0-rc3-00363-g7726d4c3e60b #5\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0x6e/0x91 lib/dump_stack.c:106\\n print_address_description mm/kasan/report.c:317 [inline]\\n print_report.cold+0x5e/0x5e5 mm/kasan/report.c:433\\n kasan_report+0xa3/0x130 mm/kasan/report.c:495\\n kernfs_type include/linux/kernfs.h:335 [inline]\\n kernfs_leftmost_descendant fs/kernfs/dir.c:1261 [inline]\\n __kernfs_remove.part.0+0x843/0x960 fs/kernfs/dir.c:1369\\n __kernfs_remove fs/kernfs/dir.c:1356 [inline]\\n kernfs_remove_by_name_ns+0x108/0x190 fs/kernfs/dir.c:1589\\n sysfs_slab_add+0x133/0x1e0 mm/slub.c:5943\\n __kmem_cache_create+0x3e0/0x550 mm/slub.c:4899\\n create_cache mm/slab_common.c:229 [inline]\\n kmem_cache_create_usercopy+0x167/0x2a0 mm/slab_common.c:335\\n p9_client_create+0xd4d/0x1190 net/9p/client.c:993\\n v9fs_session_init+0x1e6/0x13c0 fs/9p/v9fs.c:408\\n v9fs_mount+0xb9/0xbd0 fs/9p/vfs_super.c:126\\n legacy_get_tree+0xf1/0x200 fs/fs_context.c:610\\n vfs_get_tree+0x85/0x2e0 fs/super.c:1530\\n do_new_mount fs/namespace.c:3040 [inline]\\n path_mount+0x675/0x1d00 fs/namespace.c:3370\\n do_mount fs/namespace.c:3383 [inline]\\n __do_sys_mount fs/namespace.c:3591 [inline]\\n __se_sys_mount fs/namespace.c:3568 [inline]\\n __x64_sys_mount+0x282/0x300 fs/namespace.c:3568\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x38/0x90 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\\nRIP: 0033:0x7f725f983aed\\nCode: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f725f0f7028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5\\nRAX: ffffffffffffffda RBX: 00007f725faa3f80 RCX: 00007f725f983aed\\nRDX: 00000000200000c0 RSI: 0000000020000040 RDI: 0000000000000000\\nRBP: 00007f725f9f419c R08: 0000000020000280 R09: 0000000000000000\\nR10: 0000000000000408 R11: 0000000000000246 R12: 0000000000000000\\nR13: 0000000000000006 R14: 00007f725faa3f80 R15: 00007f725f0d7000\\n \u003c/TASK\u003e\\n\\nAllocated by task 855:\\n kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38\\n kasan_set_track mm/kasan/common.c:45 [inline]\\n set_alloc_info mm/kasan/common.c:437 [inline]\\n __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:470\\n kasan_slab_alloc include/linux/kasan.h:224 [inline]\\n slab_post_alloc_hook mm/slab.h:7\\n---truncated---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/kernfs/dir.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"45a140e587f3d32d8d424ed940dffb61e1739047\",\"lessThan\":\"4dfd6a477a1525773469feaf3c514b2c0fef76b5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"45a140e587f3d32d8d424ed940dffb61e1739047\",\"lessThan\":\"02eb35131050735332658029082f61515b7dfe38\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"45a140e587f3d32d8d424ed940dffb61e1739047\",\"lessThan\":\"028cf780743eea79abffa7206b9dcfc080ad3546\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"45a140e587f3d32d8d424ed940dffb61e1739047\",\"lessThan\":\"c78b0dc6fb7fb389d674e491fd376388cdfb1d53\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"45a140e587f3d32d8d424ed940dffb61e1739047\",\"lessThan\":\"6f72a3977ba9d0e5491a5c01315204272e7f9c44\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"45a140e587f3d32d8d424ed940dffb61e1739047\",\"lessThan\":\"94d2643df1e70a4c310ebb5e2c493eec33df1a06\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"45a140e587f3d32d8d424ed940dffb61e1739047\",\"lessThan\":\"af1b57cc39beca203559576b3046094fc9e5eb32\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"45a140e587f3d32d8d424ed940dffb61e1739047\",\"lessThan\":\"4abc99652812a2ddf932f137515d5c5a04723538\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/kernfs/dir.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.9.332\",\"lessThanOrEqual\":\"4.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.298\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.264\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.223\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.153\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.77\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.7\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.14\",\"versionEndExcluding\":\"4.9.332\",\"matchCriteriaId\":\"37026F01-AFEE-47AC-B31E-05AD5F5200BD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.298\",\"matchCriteriaId\":\"7140B9A2-EB63-497C-96B1-68A96CD99051\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.264\",\"matchCriteriaId\":\"8AE23A9F-BF98-4055-AA49-02118B96226D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.223\",\"matchCriteriaId\":\"7FE3F72A-5992-4ABB-A961-F834281060A9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.153\",\"matchCriteriaId\":\"62052E35-0E91-4164-BB92-83270CEA0113\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.77\",\"matchCriteriaId\":\"756161DE-EFE3-4008-964A-DFE360B188B7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.0.7\",\"matchCriteriaId\":\"65D387F0-209C-4EAD-98BA-C4B430A840C9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/028cf780743eea79abffa7206b9dcfc080ad3546\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/02eb35131050735332658029082f61515b7dfe38\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4abc99652812a2ddf932f137515d5c5a04723538\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4dfd6a477a1525773469feaf3c514b2c0fef76b5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6f72a3977ba9d0e5491a5c01315204272e7f9c44\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/94d2643df1e70a4c310ebb5e2c493eec33df1a06\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/af1b57cc39beca203559576b3046094fc9e5eb32\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c78b0dc6fb7fb389d674e491fd376388cdfb1d53\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:37:16+00:00",
      "cve": "CVE-2022-50432",
      "id": "CVE-2022-50432",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: kernfs: fix use-after-free in __kernfs_remove",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50432.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-17T13:51:32Z",
      "cve": "CVE-2022-50432",
      "id": "CVE-2022-50432",
      "initial_release_date": "2025-10-01T23:32:48Z",
      "product_status:known_affected": "420",
      "product_status:known_not_affected": "187",
      "product_status:recommended": "323",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50432",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50432.json",
      "version": "54"
    }
  }
}



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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.