CVE-2023-53492 (GCVE-0-2023-53492)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:45 – Updated: 2025-10-01 11:45
VLAI?
Title
netfilter: nf_tables: do not ignore genmask when looking up chain by id
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: do not ignore genmask when looking up chain by id When adding a rule to a chain referring to its ID, if that chain had been deleted on the same batch, the rule might end up referring to a deleted chain. This will lead to a WARNING like following: [ 33.098431] ------------[ cut here ]------------ [ 33.098678] WARNING: CPU: 5 PID: 69 at net/netfilter/nf_tables_api.c:2037 nf_tables_chain_destroy+0x23d/0x260 [ 33.099217] Modules linked in: [ 33.099388] CPU: 5 PID: 69 Comm: kworker/5:1 Not tainted 6.4.0+ #409 [ 33.099726] Workqueue: events nf_tables_trans_destroy_work [ 33.100018] RIP: 0010:nf_tables_chain_destroy+0x23d/0x260 [ 33.100306] Code: 8b 7c 24 68 e8 64 9c ed fe 4c 89 e7 e8 5c 9c ed fe 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d 31 c0 89 c6 89 c7 c3 cc cc cc cc <0f> 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d 31 c0 89 c6 89 c7 [ 33.101271] RSP: 0018:ffffc900004ffc48 EFLAGS: 00010202 [ 33.101546] RAX: 0000000000000001 RBX: ffff888006fc0a28 RCX: 0000000000000000 [ 33.101920] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 33.102649] RBP: ffffc900004ffc78 R08: 0000000000000000 R09: 0000000000000000 [ 33.103018] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880135ef500 [ 33.103385] R13: 0000000000000000 R14: dead000000000122 R15: ffff888006fc0a10 [ 33.103762] FS: 0000000000000000(0000) GS:ffff888024c80000(0000) knlGS:0000000000000000 [ 33.104184] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.104493] CR2: 00007fe863b56a50 CR3: 00000000124b0001 CR4: 0000000000770ee0 [ 33.104872] PKRU: 55555554 [ 33.104999] Call Trace: [ 33.105113] <TASK> [ 33.105214] ? show_regs+0x72/0x90 [ 33.105371] ? __warn+0xa5/0x210 [ 33.105520] ? nf_tables_chain_destroy+0x23d/0x260 [ 33.105732] ? report_bug+0x1f2/0x200 [ 33.105902] ? handle_bug+0x46/0x90 [ 33.106546] ? exc_invalid_op+0x19/0x50 [ 33.106762] ? asm_exc_invalid_op+0x1b/0x20 [ 33.106995] ? nf_tables_chain_destroy+0x23d/0x260 [ 33.107249] ? nf_tables_chain_destroy+0x30/0x260 [ 33.107506] nf_tables_trans_destroy_work+0x669/0x680 [ 33.107782] ? mark_held_locks+0x28/0xa0 [ 33.107996] ? __pfx_nf_tables_trans_destroy_work+0x10/0x10 [ 33.108294] ? _raw_spin_unlock_irq+0x28/0x70 [ 33.108538] process_one_work+0x68c/0xb70 [ 33.108755] ? lock_acquire+0x17f/0x420 [ 33.108977] ? __pfx_process_one_work+0x10/0x10 [ 33.109218] ? do_raw_spin_lock+0x128/0x1d0 [ 33.109435] ? _raw_spin_lock_irq+0x71/0x80 [ 33.109634] worker_thread+0x2bd/0x700 [ 33.109817] ? __pfx_worker_thread+0x10/0x10 [ 33.110254] kthread+0x18b/0x1d0 [ 33.110410] ? __pfx_kthread+0x10/0x10 [ 33.110581] ret_from_fork+0x29/0x50 [ 33.110757] </TASK> [ 33.110866] irq event stamp: 1651 [ 33.111017] hardirqs last enabled at (1659): [<ffffffffa206a209>] __up_console_sem+0x79/0xa0 [ 33.111379] hardirqs last disabled at (1666): [<ffffffffa206a1ee>] __up_console_sem+0x5e/0xa0 [ 33.111740] softirqs last enabled at (1616): [<ffffffffa1f5d40e>] __irq_exit_rcu+0x9e/0xe0 [ 33.112094] softirqs last disabled at (1367): [<ffffffffa1f5d40e>] __irq_exit_rcu+0x9e/0xe0 [ 33.112453] ---[ end trace 0000000000000000 ]--- This is due to the nft_chain_lookup_byid ignoring the genmask. After this change, adding the new rule will fail as it will not find the chain.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 837830a4b439bfeb86c70b0115c280377c84714b , < 4ae2e501331aaa506eaf760339bb2f43e5769395 (git)
Affected: 837830a4b439bfeb86c70b0115c280377c84714b , < 041e2ac88caef286b39064e83e825e3f53113d36 (git)
Affected: 837830a4b439bfeb86c70b0115c280377c84714b , < fc95c8b02c6160936f1f3d8d9d7f4f66f3c84b49 (git)
Affected: 837830a4b439bfeb86c70b0115c280377c84714b , < 5e5e967e8505fbdabfb6497367ec1b808cadc356 (git)
Affected: 837830a4b439bfeb86c70b0115c280377c84714b , < 515ad530795c118f012539ed76d02bacfd426d89 (git)
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    Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.10.188 , ≤ 5.10.* (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.39 , ≤ 6.1.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_tables_api.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4ae2e501331aaa506eaf760339bb2f43e5769395",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "versionType": "git"
            },
            {
              "lessThan": "041e2ac88caef286b39064e83e825e3f53113d36",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "versionType": "git"
            },
            {
              "lessThan": "fc95c8b02c6160936f1f3d8d9d7f4f66f3c84b49",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "versionType": "git"
            },
            {
              "lessThan": "5e5e967e8505fbdabfb6497367ec1b808cadc356",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "versionType": "git"
            },
            {
              "lessThan": "515ad530795c118f012539ed76d02bacfd426d89",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_tables_api.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.188",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.121",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.39",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.4",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: do not ignore genmask when looking up chain by id\n\nWhen adding a rule to a chain referring to its ID, if that chain had been\ndeleted on the same batch, the rule might end up referring to a deleted\nchain.\n\nThis will lead to a WARNING like following:\n\n[   33.098431] ------------[ cut here ]------------\n[   33.098678] WARNING: CPU: 5 PID: 69 at net/netfilter/nf_tables_api.c:2037 nf_tables_chain_destroy+0x23d/0x260\n[   33.099217] Modules linked in:\n[   33.099388] CPU: 5 PID: 69 Comm: kworker/5:1 Not tainted 6.4.0+ #409\n[   33.099726] Workqueue: events nf_tables_trans_destroy_work\n[   33.100018] RIP: 0010:nf_tables_chain_destroy+0x23d/0x260\n[   33.100306] Code: 8b 7c 24 68 e8 64 9c ed fe 4c 89 e7 e8 5c 9c ed fe 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d 31 c0 89 c6 89 c7 c3 cc cc cc cc \u003c0f\u003e 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d 31 c0 89 c6 89 c7\n[   33.101271] RSP: 0018:ffffc900004ffc48 EFLAGS: 00010202\n[   33.101546] RAX: 0000000000000001 RBX: ffff888006fc0a28 RCX: 0000000000000000\n[   33.101920] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\n[   33.102649] RBP: ffffc900004ffc78 R08: 0000000000000000 R09: 0000000000000000\n[   33.103018] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880135ef500\n[   33.103385] R13: 0000000000000000 R14: dead000000000122 R15: ffff888006fc0a10\n[   33.103762] FS:  0000000000000000(0000) GS:ffff888024c80000(0000) knlGS:0000000000000000\n[   33.104184] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[   33.104493] CR2: 00007fe863b56a50 CR3: 00000000124b0001 CR4: 0000000000770ee0\n[   33.104872] PKRU: 55555554\n[   33.104999] Call Trace:\n[   33.105113]  \u003cTASK\u003e\n[   33.105214]  ? show_regs+0x72/0x90\n[   33.105371]  ? __warn+0xa5/0x210\n[   33.105520]  ? nf_tables_chain_destroy+0x23d/0x260\n[   33.105732]  ? report_bug+0x1f2/0x200\n[   33.105902]  ? handle_bug+0x46/0x90\n[   33.106546]  ? exc_invalid_op+0x19/0x50\n[   33.106762]  ? asm_exc_invalid_op+0x1b/0x20\n[   33.106995]  ? nf_tables_chain_destroy+0x23d/0x260\n[   33.107249]  ? nf_tables_chain_destroy+0x30/0x260\n[   33.107506]  nf_tables_trans_destroy_work+0x669/0x680\n[   33.107782]  ? mark_held_locks+0x28/0xa0\n[   33.107996]  ? __pfx_nf_tables_trans_destroy_work+0x10/0x10\n[   33.108294]  ? _raw_spin_unlock_irq+0x28/0x70\n[   33.108538]  process_one_work+0x68c/0xb70\n[   33.108755]  ? lock_acquire+0x17f/0x420\n[   33.108977]  ? __pfx_process_one_work+0x10/0x10\n[   33.109218]  ? do_raw_spin_lock+0x128/0x1d0\n[   33.109435]  ? _raw_spin_lock_irq+0x71/0x80\n[   33.109634]  worker_thread+0x2bd/0x700\n[   33.109817]  ? __pfx_worker_thread+0x10/0x10\n[   33.110254]  kthread+0x18b/0x1d0\n[   33.110410]  ? __pfx_kthread+0x10/0x10\n[   33.110581]  ret_from_fork+0x29/0x50\n[   33.110757]  \u003c/TASK\u003e\n[   33.110866] irq event stamp: 1651\n[   33.111017] hardirqs last  enabled at (1659): [\u003cffffffffa206a209\u003e] __up_console_sem+0x79/0xa0\n[   33.111379] hardirqs last disabled at (1666): [\u003cffffffffa206a1ee\u003e] __up_console_sem+0x5e/0xa0\n[   33.111740] softirqs last  enabled at (1616): [\u003cffffffffa1f5d40e\u003e] __irq_exit_rcu+0x9e/0xe0\n[   33.112094] softirqs last disabled at (1367): [\u003cffffffffa1f5d40e\u003e] __irq_exit_rcu+0x9e/0xe0\n[   33.112453] ---[ end trace 0000000000000000 ]---\n\nThis is due to the nft_chain_lookup_byid ignoring the genmask. After this\nchange, adding the new rule will fail as it will not find the chain."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-01T11:45:44.019Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4ae2e501331aaa506eaf760339bb2f43e5769395"
        },
        {
          "url": "https://git.kernel.org/stable/c/041e2ac88caef286b39064e83e825e3f53113d36"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc95c8b02c6160936f1f3d8d9d7f4f66f3c84b49"
        },
        {
          "url": "https://git.kernel.org/stable/c/5e5e967e8505fbdabfb6497367ec1b808cadc356"
        },
        {
          "url": "https://git.kernel.org/stable/c/515ad530795c118f012539ed76d02bacfd426d89"
        }
      ],
      "title": "netfilter: nf_tables: do not ignore genmask when looking up chain by id",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53492",
    "datePublished": "2025-10-01T11:45:44.019Z",
    "dateReserved": "2025-10-01T11:39:39.403Z",
    "dateUpdated": "2025-10-01T11:45:44.019Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • 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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • 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.