CVE-2022-50401 (GCVE-0-2022-50401)

Vulnerability from cvelistv5 – Published: 2025-09-18 16:03 – Updated: 2026-01-14 19:13
VLAI?
Title
nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure
Summary
In the Linux kernel, the following vulnerability has been resolved: nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure On error situation `clp->cl_cb_conn.cb_xprt` should not be given a reference to the xprt otherwise both client cleanup and the error handling path of the caller call to put it. Better to delay handing over the reference to a later branch. [ 72.530665] refcount_t: underflow; use-after-free. [ 72.531933] WARNING: CPU: 0 PID: 173 at lib/refcount.c:28 refcount_warn_saturate+0xcf/0x120 [ 72.533075] Modules linked in: nfsd(OE) nfsv4(OE) nfsv3(OE) nfs(OE) lockd(OE) compat_nfs_ssc(OE) nfs_acl(OE) rpcsec_gss_krb5(OE) auth_rpcgss(OE) rpcrdma(OE) dns_resolver fscache netfs grace rdma_cm iw_cm ib_cm sunrpc(OE) mlx5_ib mlx5_core mlxfw pci_hyperv_intf ib_uverbs ib_core xt_MASQUERADE nf_conntrack_netlink nft_counter xt_addrtype nft_compat br_netfilter bridge stp llc nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set overlay nf_tables nfnetlink crct10dif_pclmul crc32_pclmul ghash_clmulni_intel xfs serio_raw virtio_net virtio_blk net_failover failover fuse [last unloaded: sunrpc] [ 72.540389] CPU: 0 PID: 173 Comm: kworker/u16:5 Tainted: G OE 5.15.82-dan #1 [ 72.541511] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+1084+97b81f61 04/01/2014 [ 72.542717] Workqueue: nfsd4_callbacks nfsd4_run_cb_work [nfsd] [ 72.543575] RIP: 0010:refcount_warn_saturate+0xcf/0x120 [ 72.544299] Code: 55 00 0f 0b 5d e9 01 50 98 00 80 3d 75 9e 39 08 00 0f 85 74 ff ff ff 48 c7 c7 e8 d1 60 8e c6 05 61 9e 39 08 01 e8 f6 51 55 00 <0f> 0b 5d e9 d9 4f 98 00 80 3d 4b 9e 39 08 00 0f 85 4c ff ff ff 48 [ 72.546666] RSP: 0018:ffffb3f841157cf0 EFLAGS: 00010286 [ 72.547393] RAX: 0000000000000026 RBX: ffff89ac6231d478 RCX: 0000000000000000 [ 72.548324] RDX: ffff89adb7c2c2c0 RSI: ffff89adb7c205c0 RDI: ffff89adb7c205c0 [ 72.549271] RBP: ffffb3f841157cf0 R08: 0000000000000000 R09: c0000000ffefffff [ 72.550209] R10: 0000000000000001 R11: ffffb3f841157ad0 R12: ffff89ac6231d180 [ 72.551142] R13: ffff89ac6231d478 R14: ffff89ac40c06180 R15: ffff89ac6231d4b0 [ 72.552089] FS: 0000000000000000(0000) GS:ffff89adb7c00000(0000) knlGS:0000000000000000 [ 72.553175] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.553934] CR2: 0000563a310506a8 CR3: 0000000109a66000 CR4: 0000000000350ef0 [ 72.554874] Call Trace: [ 72.555278] <TASK> [ 72.555614] svc_xprt_put+0xaf/0xe0 [sunrpc] [ 72.556276] nfsd4_process_cb_update.isra.11+0xb7/0x410 [nfsd] [ 72.557087] ? update_load_avg+0x82/0x610 [ 72.557652] ? cpuacct_charge+0x60/0x70 [ 72.558212] ? dequeue_entity+0xdb/0x3e0 [ 72.558765] ? queued_spin_unlock+0x9/0x20 [ 72.559358] nfsd4_run_cb_work+0xfc/0x270 [nfsd] [ 72.560031] process_one_work+0x1df/0x390 [ 72.560600] worker_thread+0x37/0x3b0 [ 72.561644] ? process_one_work+0x390/0x390 [ 72.562247] kthread+0x12f/0x150 [ 72.562710] ? set_kthread_struct+0x50/0x50 [ 72.563309] ret_from_fork+0x22/0x30 [ 72.563818] </TASK> [ 72.564189] ---[ end trace 031117b1c72ec616 ]--- [ 72.566019] list_add corruption. next->prev should be prev (ffff89ac4977e538), but was ffff89ac4763e018. (next=ffff89ac4763e018). [ 72.567647] ------------[ cut here ]------------
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 69151594c72a1748cf93ae5b5fa68d5084253dce , < 707bcca9616002d204091ca7c4d1d91151104332 (git)
Affected: 0c4fb76c4e711d9e4e70ddc6732310a17076175d , < 15fc60aa5bdcf6d5f93000d3d00579fc67632ee0 (git)
Affected: 22c721560ef24003bcb9c3d9c358841dcfa4e212 , < 9b4ae8c42d2ff09ed7c5832ccce5684c55e5ed23 (git)
Affected: e8cac2e3067e8587f8271c2177cc5ca924a61b54 , < fddac3b4578d302ac9e51e7f03a9aae6254ae2a3 (git)
Affected: a4abc6b12eb1f7a533c2e7484cfa555454ff0977 , < c1207219a4bfa50121c9345d5d165470d0a82531 (git)
Affected: a4abc6b12eb1f7a533c2e7484cfa555454ff0977 , < a472f069ced8601979f53c13c0cf20236074ed46 (git)
Affected: a4abc6b12eb1f7a533c2e7484cfa555454ff0977 , < e2f9f03e4537f3fcc8fd2bdd3248530c3477a371 (git)
Affected: a4abc6b12eb1f7a533c2e7484cfa555454ff0977 , < d843ebd860c58a38e45527e8ec6516059f4c97f3 (git)
Affected: a4abc6b12eb1f7a533c2e7484cfa555454ff0977 , < 3bc8edc98bd43540dbe648e4ef91f443d6d20a24 (git)
Affected: f5a50e848e4509448b8b91536b5d421722bf154b (git)
Affected: c745f9ef3c8cbae70556131eaeaf0f64510243b7 (git)
Create a notification for this product.
    Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure\n\nOn error situation `clp-\u003ecl_cb_conn.cb_xprt` should not be given\na reference to the xprt otherwise both client cleanup and the\nerror handling path of the caller call to put it. Better to\ndelay handing over the reference to a later branch.\n\n[   72.530665] refcount_t: underflow; use-after-free.\n[   72.531933] WARNING: CPU: 0 PID: 173 at lib/refcount.c:28 refcount_warn_saturate+0xcf/0x120\n[   72.533075] Modules linked in: nfsd(OE) nfsv4(OE) nfsv3(OE) nfs(OE) lockd(OE) compat_nfs_ssc(OE) nfs_acl(OE) rpcsec_gss_krb5(OE) auth_rpcgss(OE) rpcrdma(OE) dns_resolver fscache netfs grace rdma_cm iw_cm ib_cm sunrpc(OE) mlx5_ib mlx5_core mlxfw pci_hyperv_intf ib_uverbs ib_core xt_MASQUERADE nf_conntrack_netlink nft_counter xt_addrtype nft_compat br_netfilter bridge stp llc nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set overlay nf_tables nfnetlink crct10dif_pclmul crc32_pclmul ghash_clmulni_intel xfs serio_raw virtio_net virtio_blk net_failover failover fuse [last unloaded: sunrpc]\n[   72.540389] CPU: 0 PID: 173 Comm: kworker/u16:5 Tainted: G           OE     5.15.82-dan #1\n[   72.541511] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+1084+97b81f61 04/01/2014\n[   72.542717] Workqueue: nfsd4_callbacks nfsd4_run_cb_work [nfsd]\n[   72.543575] RIP: 0010:refcount_warn_saturate+0xcf/0x120\n[   72.544299] Code: 55 00 0f 0b 5d e9 01 50 98 00 80 3d 75 9e 39 08 00 0f 85 74 ff ff ff 48 c7 c7 e8 d1 60 8e c6 05 61 9e 39 08 01 e8 f6 51 55 00 \u003c0f\u003e 0b 5d e9 d9 4f 98 00 80 3d 4b 9e 39 08 00 0f 85 4c ff ff ff 48\n[   72.546666] RSP: 0018:ffffb3f841157cf0 EFLAGS: 00010286\n[   72.547393] RAX: 0000000000000026 RBX: ffff89ac6231d478 RCX: 0000000000000000\n[   72.548324] RDX: ffff89adb7c2c2c0 RSI: ffff89adb7c205c0 RDI: ffff89adb7c205c0\n[   72.549271] RBP: ffffb3f841157cf0 R08: 0000000000000000 R09: c0000000ffefffff\n[   72.550209] R10: 0000000000000001 R11: ffffb3f841157ad0 R12: ffff89ac6231d180\n[   72.551142] R13: ffff89ac6231d478 R14: ffff89ac40c06180 R15: ffff89ac6231d4b0\n[   72.552089] FS:  0000000000000000(0000) GS:ffff89adb7c00000(0000) knlGS:0000000000000000\n[   72.553175] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[   72.553934] CR2: 0000563a310506a8 CR3: 0000000109a66000 CR4: 0000000000350ef0\n[   72.554874] Call Trace:\n[   72.555278]  \u003cTASK\u003e\n[   72.555614]  svc_xprt_put+0xaf/0xe0 [sunrpc]\n[   72.556276]  nfsd4_process_cb_update.isra.11+0xb7/0x410 [nfsd]\n[   72.557087]  ? update_load_avg+0x82/0x610\n[   72.557652]  ? cpuacct_charge+0x60/0x70\n[   72.558212]  ? dequeue_entity+0xdb/0x3e0\n[   72.558765]  ? queued_spin_unlock+0x9/0x20\n[   72.559358]  nfsd4_run_cb_work+0xfc/0x270 [nfsd]\n[   72.560031]  process_one_work+0x1df/0x390\n[   72.560600]  worker_thread+0x37/0x3b0\n[   72.561644]  ? process_one_work+0x390/0x390\n[   72.562247]  kthread+0x12f/0x150\n[   72.562710]  ? set_kthread_struct+0x50/0x50\n[   72.563309]  ret_from_fork+0x22/0x30\n[   72.563818]  \u003c/TASK\u003e\n[   72.564189] ---[ end trace 031117b1c72ec616 ]---\n[   72.566019] list_add corruption. next-\u003eprev should be prev (ffff89ac4977e538), but was ffff89ac4763e018. (next=ffff89ac4763e018).\n[   72.567647] ------------[ cut here ]------------"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-18T16:03:47.283Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/707bcca9616002d204091ca7c4d1d91151104332"
        },
        {
          "url": "https://git.kernel.org/stable/c/15fc60aa5bdcf6d5f93000d3d00579fc67632ee0"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b4ae8c42d2ff09ed7c5832ccce5684c55e5ed23"
        },
        {
          "url": "https://git.kernel.org/stable/c/fddac3b4578d302ac9e51e7f03a9aae6254ae2a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/c1207219a4bfa50121c9345d5d165470d0a82531"
        },
        {
          "url": "https://git.kernel.org/stable/c/a472f069ced8601979f53c13c0cf20236074ed46"
        },
        {
          "url": "https://git.kernel.org/stable/c/e2f9f03e4537f3fcc8fd2bdd3248530c3477a371"
        },
        {
          "url": "https://git.kernel.org/stable/c/d843ebd860c58a38e45527e8ec6516059f4c97f3"
        },
        {
          "url": "https://git.kernel.org/stable/c/3bc8edc98bd43540dbe648e4ef91f443d6d20a24"
        }
      ],
      "title": "nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50401",
    "datePublished": "2025-09-18T16:03:47.283Z",
    "dateReserved": "2025-09-17T14:53:06.999Z",
    "dateUpdated": "2026-01-14T19:13:07.779Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50401\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-18T16:15:42.353\",\"lastModified\":\"2026-01-14T20:15:52.433\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure\\n\\nOn error situation `clp-\u003ecl_cb_conn.cb_xprt` should not be given\\na reference to the xprt otherwise both client cleanup and the\\nerror handling path of the caller call to put it. Better to\\ndelay handing over the reference to a later branch.\\n\\n[   72.530665] refcount_t: underflow; use-after-free.\\n[   72.531933] WARNING: CPU: 0 PID: 173 at lib/refcount.c:28 refcount_warn_saturate+0xcf/0x120\\n[   72.533075] Modules linked in: nfsd(OE) nfsv4(OE) nfsv3(OE) nfs(OE) lockd(OE) compat_nfs_ssc(OE) nfs_acl(OE) rpcsec_gss_krb5(OE) auth_rpcgss(OE) rpcrdma(OE) dns_resolver fscache netfs grace rdma_cm iw_cm ib_cm sunrpc(OE) mlx5_ib mlx5_core mlxfw pci_hyperv_intf ib_uverbs ib_core xt_MASQUERADE nf_conntrack_netlink nft_counter xt_addrtype nft_compat br_netfilter bridge stp llc nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set overlay nf_tables nfnetlink crct10dif_pclmul crc32_pclmul ghash_clmulni_intel xfs serio_raw virtio_net virtio_blk net_failover failover fuse [last unloaded: sunrpc]\\n[   72.540389] CPU: 0 PID: 173 Comm: kworker/u16:5 Tainted: G           OE     5.15.82-dan #1\\n[   72.541511] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+1084+97b81f61 04/01/2014\\n[   72.542717] Workqueue: nfsd4_callbacks nfsd4_run_cb_work [nfsd]\\n[   72.543575] RIP: 0010:refcount_warn_saturate+0xcf/0x120\\n[   72.544299] Code: 55 00 0f 0b 5d e9 01 50 98 00 80 3d 75 9e 39 08 00 0f 85 74 ff ff ff 48 c7 c7 e8 d1 60 8e c6 05 61 9e 39 08 01 e8 f6 51 55 00 \u003c0f\u003e 0b 5d e9 d9 4f 98 00 80 3d 4b 9e 39 08 00 0f 85 4c ff ff ff 48\\n[   72.546666] RSP: 0018:ffffb3f841157cf0 EFLAGS: 00010286\\n[   72.547393] RAX: 0000000000000026 RBX: ffff89ac6231d478 RCX: 0000000000000000\\n[   72.548324] RDX: ffff89adb7c2c2c0 RSI: ffff89adb7c205c0 RDI: ffff89adb7c205c0\\n[   72.549271] RBP: ffffb3f841157cf0 R08: 0000000000000000 R09: c0000000ffefffff\\n[   72.550209] R10: 0000000000000001 R11: ffffb3f841157ad0 R12: ffff89ac6231d180\\n[   72.551142] R13: ffff89ac6231d478 R14: ffff89ac40c06180 R15: ffff89ac6231d4b0\\n[   72.552089] FS:  0000000000000000(0000) GS:ffff89adb7c00000(0000) knlGS:0000000000000000\\n[   72.553175] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[   72.553934] CR2: 0000563a310506a8 CR3: 0000000109a66000 CR4: 0000000000350ef0\\n[   72.554874] Call Trace:\\n[   72.555278]  \u003cTASK\u003e\\n[   72.555614]  svc_xprt_put+0xaf/0xe0 [sunrpc]\\n[   72.556276]  nfsd4_process_cb_update.isra.11+0xb7/0x410 [nfsd]\\n[   72.557087]  ? update_load_avg+0x82/0x610\\n[   72.557652]  ? cpuacct_charge+0x60/0x70\\n[   72.558212]  ? dequeue_entity+0xdb/0x3e0\\n[   72.558765]  ? queued_spin_unlock+0x9/0x20\\n[   72.559358]  nfsd4_run_cb_work+0xfc/0x270 [nfsd]\\n[   72.560031]  process_one_work+0x1df/0x390\\n[   72.560600]  worker_thread+0x37/0x3b0\\n[   72.561644]  ? process_one_work+0x390/0x390\\n[   72.562247]  kthread+0x12f/0x150\\n[   72.562710]  ? set_kthread_struct+0x50/0x50\\n[   72.563309]  ret_from_fork+0x22/0x30\\n[   72.563818]  \u003c/TASK\u003e\\n[   72.564189] ---[ end trace 031117b1c72ec616 ]---\\n[   72.566019] list_add corruption. next-\u003eprev should be prev (ffff89ac4977e538), but was ffff89ac4763e018. (next=ffff89ac4763e018).\\n[   72.567647] ------------[ cut here ]------------\"}],\"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},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"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-415\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-415\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.4.229\",\"versionEndExcluding\":\"4.5\",\"matchCriteriaId\":\"D106EAFC-62A8-483B-BADC-D951AC7278EB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9.229\",\"versionEndExcluding\":\"4.9.337\",\"matchCriteriaId\":\"1DB7502A-5BBF-4FEF-8A57-F2C6EC2F7B18\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.14.186\",\"versionEndExcluding\":\"4.14.303\",\"matchCriteriaId\":\"868D329E-79C1-475E-B478-24248BD615C8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.130\",\"versionEndExcluding\":\"4.19.270\",\"matchCriteriaId\":\"50530B8F-093B-45CD-8A84-6637D214994A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.49\",\"versionEndExcluding\":\"5.4.229\",\"matchCriteriaId\":\"0D16A767-B656-4D41-B962-5CC7CD4DD684\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.7.6\",\"versionEndExcluding\":\"5.10.163\",\"matchCriteriaId\":\"F509BDE3-C673-460A-BE89-E5D7780630C7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.86\",\"matchCriteriaId\":\"47237296-55D1-4ED4-8075-D00FC85A61EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.0.16\",\"matchCriteriaId\":\"C720A569-3D93-4D77-95F6-E2B3A3267D9F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1\",\"versionEndExcluding\":\"6.1.2\",\"matchCriteriaId\":\"77239F4B-6BB2-4B9E-A654-36A52396116C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/15fc60aa5bdcf6d5f93000d3d00579fc67632ee0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3bc8edc98bd43540dbe648e4ef91f443d6d20a24\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/707bcca9616002d204091ca7c4d1d91151104332\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9b4ae8c42d2ff09ed7c5832ccce5684c55e5ed23\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a472f069ced8601979f53c13c0cf20236074ed46\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c1207219a4bfa50121c9345d5d165470d0a82531\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d843ebd860c58a38e45527e8ec6516059f4c97f3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e2f9f03e4537f3fcc8fd2bdd3248530c3477a371\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fddac3b4578d302ac9e51e7f03a9aae6254ae2a3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-50401\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T19:06:37.052651Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-415\", \"description\": \"CWE-415 Double Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T19:06:32.934Z\"}}], \"cna\": {\"title\": \"nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"69151594c72a1748cf93ae5b5fa68d5084253dce\", \"lessThan\": \"707bcca9616002d204091ca7c4d1d91151104332\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c4fb76c4e711d9e4e70ddc6732310a17076175d\", \"lessThan\": \"15fc60aa5bdcf6d5f93000d3d00579fc67632ee0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"22c721560ef24003bcb9c3d9c358841dcfa4e212\", \"lessThan\": \"9b4ae8c42d2ff09ed7c5832ccce5684c55e5ed23\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8cac2e3067e8587f8271c2177cc5ca924a61b54\", \"lessThan\": \"fddac3b4578d302ac9e51e7f03a9aae6254ae2a3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a4abc6b12eb1f7a533c2e7484cfa555454ff0977\", \"lessThan\": \"c1207219a4bfa50121c9345d5d165470d0a82531\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a4abc6b12eb1f7a533c2e7484cfa555454ff0977\", \"lessThan\": \"a472f069ced8601979f53c13c0cf20236074ed46\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a4abc6b12eb1f7a533c2e7484cfa555454ff0977\", \"lessThan\": \"e2f9f03e4537f3fcc8fd2bdd3248530c3477a371\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a4abc6b12eb1f7a533c2e7484cfa555454ff0977\", \"lessThan\": \"d843ebd860c58a38e45527e8ec6516059f4c97f3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a4abc6b12eb1f7a533c2e7484cfa555454ff0977\", \"lessThan\": \"3bc8edc98bd43540dbe648e4ef91f443d6d20a24\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f5a50e848e4509448b8b91536b5d421722bf154b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c745f9ef3c8cbae70556131eaeaf0f64510243b7\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/nfsd/nfs4callback.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.8\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.9.337\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.9.*\"}, {\"status\": \"unaffected\", \"version\": \"4.14.303\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.270\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.229\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.163\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.86\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.16\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/nfsd/nfs4callback.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/707bcca9616002d204091ca7c4d1d91151104332\"}, {\"url\": \"https://git.kernel.org/stable/c/15fc60aa5bdcf6d5f93000d3d00579fc67632ee0\"}, {\"url\": \"https://git.kernel.org/stable/c/9b4ae8c42d2ff09ed7c5832ccce5684c55e5ed23\"}, {\"url\": \"https://git.kernel.org/stable/c/fddac3b4578d302ac9e51e7f03a9aae6254ae2a3\"}, {\"url\": \"https://git.kernel.org/stable/c/c1207219a4bfa50121c9345d5d165470d0a82531\"}, {\"url\": \"https://git.kernel.org/stable/c/a472f069ced8601979f53c13c0cf20236074ed46\"}, {\"url\": \"https://git.kernel.org/stable/c/e2f9f03e4537f3fcc8fd2bdd3248530c3477a371\"}, {\"url\": \"https://git.kernel.org/stable/c/d843ebd860c58a38e45527e8ec6516059f4c97f3\"}, {\"url\": \"https://git.kernel.org/stable/c/3bc8edc98bd43540dbe648e4ef91f443d6d20a24\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure\\n\\nOn error situation `clp-\u003ecl_cb_conn.cb_xprt` should not be given\\na reference to the xprt otherwise both client cleanup and the\\nerror handling path of the caller call to put it. Better to\\ndelay handing over the reference to a later branch.\\n\\n[   72.530665] refcount_t: underflow; use-after-free.\\n[   72.531933] WARNING: CPU: 0 PID: 173 at lib/refcount.c:28 refcount_warn_saturate+0xcf/0x120\\n[   72.533075] Modules linked in: nfsd(OE) nfsv4(OE) nfsv3(OE) nfs(OE) lockd(OE) compat_nfs_ssc(OE) nfs_acl(OE) rpcsec_gss_krb5(OE) auth_rpcgss(OE) rpcrdma(OE) dns_resolver fscache netfs grace rdma_cm iw_cm ib_cm sunrpc(OE) mlx5_ib mlx5_core mlxfw pci_hyperv_intf ib_uverbs ib_core xt_MASQUERADE nf_conntrack_netlink nft_counter xt_addrtype nft_compat br_netfilter bridge stp llc nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set overlay nf_tables nfnetlink crct10dif_pclmul crc32_pclmul ghash_clmulni_intel xfs serio_raw virtio_net virtio_blk net_failover failover fuse [last unloaded: sunrpc]\\n[   72.540389] CPU: 0 PID: 173 Comm: kworker/u16:5 Tainted: G           OE     5.15.82-dan #1\\n[   72.541511] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+1084+97b81f61 04/01/2014\\n[   72.542717] Workqueue: nfsd4_callbacks nfsd4_run_cb_work [nfsd]\\n[   72.543575] RIP: 0010:refcount_warn_saturate+0xcf/0x120\\n[   72.544299] Code: 55 00 0f 0b 5d e9 01 50 98 00 80 3d 75 9e 39 08 00 0f 85 74 ff ff ff 48 c7 c7 e8 d1 60 8e c6 05 61 9e 39 08 01 e8 f6 51 55 00 \u003c0f\u003e 0b 5d e9 d9 4f 98 00 80 3d 4b 9e 39 08 00 0f 85 4c ff ff ff 48\\n[   72.546666] RSP: 0018:ffffb3f841157cf0 EFLAGS: 00010286\\n[   72.547393] RAX: 0000000000000026 RBX: ffff89ac6231d478 RCX: 0000000000000000\\n[   72.548324] RDX: ffff89adb7c2c2c0 RSI: ffff89adb7c205c0 RDI: ffff89adb7c205c0\\n[   72.549271] RBP: ffffb3f841157cf0 R08: 0000000000000000 R09: c0000000ffefffff\\n[   72.550209] R10: 0000000000000001 R11: ffffb3f841157ad0 R12: ffff89ac6231d180\\n[   72.551142] R13: ffff89ac6231d478 R14: ffff89ac40c06180 R15: ffff89ac6231d4b0\\n[   72.552089] FS:  0000000000000000(0000) GS:ffff89adb7c00000(0000) knlGS:0000000000000000\\n[   72.553175] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[   72.553934] CR2: 0000563a310506a8 CR3: 0000000109a66000 CR4: 0000000000350ef0\\n[   72.554874] Call Trace:\\n[   72.555278]  \u003cTASK\u003e\\n[   72.555614]  svc_xprt_put+0xaf/0xe0 [sunrpc]\\n[   72.556276]  nfsd4_process_cb_update.isra.11+0xb7/0x410 [nfsd]\\n[   72.557087]  ? update_load_avg+0x82/0x610\\n[   72.557652]  ? cpuacct_charge+0x60/0x70\\n[   72.558212]  ? dequeue_entity+0xdb/0x3e0\\n[   72.558765]  ? queued_spin_unlock+0x9/0x20\\n[   72.559358]  nfsd4_run_cb_work+0xfc/0x270 [nfsd]\\n[   72.560031]  process_one_work+0x1df/0x390\\n[   72.560600]  worker_thread+0x37/0x3b0\\n[   72.561644]  ? process_one_work+0x390/0x390\\n[   72.562247]  kthread+0x12f/0x150\\n[   72.562710]  ? set_kthread_struct+0x50/0x50\\n[   72.563309]  ret_from_fork+0x22/0x30\\n[   72.563818]  \u003c/TASK\u003e\\n[   72.564189] ---[ end trace 031117b1c72ec616 ]---\\n[   72.566019] list_add corruption. next-\u003eprev should be prev (ffff89ac4977e538), but was ffff89ac4763e018. (next=ffff89ac4763e018).\\n[   72.567647] ------------[ cut here ]------------\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.337\", \"versionStartIncluding\": \"4.9.229\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.303\", \"versionStartIncluding\": \"4.14.186\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.270\", \"versionStartIncluding\": \"4.19.130\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.229\", \"versionStartIncluding\": \"5.4.49\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.163\", \"versionStartIncluding\": \"5.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.86\", \"versionStartIncluding\": \"5.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.16\", \"versionStartIncluding\": \"5.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.2\", \"versionStartIncluding\": \"5.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2\", \"versionStartIncluding\": \"5.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.4.229\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.7.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-18T16:03:47.283Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-50401\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T19:13:07.779Z\", \"dateReserved\": \"2025-09-17T14:53:06.999Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-18T16:03:47.283Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

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.