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CVE-2022-50129 (GCVE-0-2022-50129)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2026-08-05 08:57
VLAI
Title
RDMA/srpt: Fix a use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Fix a use-after-free Change the LIO port members inside struct srpt_port from regular members into pointers. Allocate the LIO port data structures from inside srpt_make_tport() and free these from inside srpt_make_tport(). Keep struct srpt_device as long as either an RDMA port or a LIO target port is associated with it. This patch decouples the lifetime of struct srpt_port (controlled by the RDMA core) and struct srpt_port_id (controlled by LIO). This patch fixes the following KASAN complaint: BUG: KASAN: use-after-free in srpt_enable_tpg+0x31/0x70 [ib_srpt] Read of size 8 at addr ffff888141cc34b8 by task check/5093 Call Trace: <TASK> show_stack+0x4e/0x53 dump_stack_lvl+0x51/0x66 print_address_description.constprop.0.cold+0xea/0x41e print_report.cold+0x90/0x205 kasan_report+0xb9/0xf0 __asan_load8+0x69/0x90 srpt_enable_tpg+0x31/0x70 [ib_srpt] target_fabric_tpg_base_enable_store+0xe2/0x140 [target_core_mod] configfs_write_iter+0x18b/0x210 new_sync_write+0x1f2/0x2f0 vfs_write+0x3e3/0x540 ksys_write+0xbb/0x140 __x64_sys_write+0x42/0x50 do_syscall_64+0x34/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 </TASK>
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a42d985bd5b234da8b61347a78dc3057bf7bb94d , < de95b52d9aabc979166aba81ccbe623aaf9c16a1 (git)
Affected: a42d985bd5b234da8b61347a78dc3057bf7bb94d , < e60d7e2462bf57273563c4e00dbfa79ee973b9e2 (git)
Affected: a42d985bd5b234da8b61347a78dc3057bf7bb94d , < 4ee8c39968a648d58b273582d4b021044a41ee5e (git)
Affected: a42d985bd5b234da8b61347a78dc3057bf7bb94d , < 388326bb1c32fcd09371c1d494af71471ef3a04b (git)
Affected: a42d985bd5b234da8b61347a78dc3057bf7bb94d , < b5605148e6ce36bb21020d49010b617693933128 (git)
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Linux Linux Affected: 3.3
Unaffected: 0 , < 3.3 (semver)
Unaffected: 5.10.137 , ≤ 5.10.* (semver)
Unaffected: 5.15.61 , ≤ 5.15.* (semver)
Unaffected: 5.18.18 , ≤ 5.18.* (semver)
Unaffected: 5.19.2 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/srpt: Fix a use-after-free\n\nChange the LIO port members inside struct srpt_port from regular members\ninto pointers. Allocate the LIO port data structures from inside\nsrpt_make_tport() and free these from inside srpt_make_tport(). Keep\nstruct srpt_device as long as either an RDMA port or a LIO target port is\nassociated with it. This patch decouples the lifetime of struct srpt_port\n(controlled by the RDMA core) and struct srpt_port_id (controlled by LIO).\nThis patch fixes the following KASAN complaint:\n\n  BUG: KASAN: use-after-free in srpt_enable_tpg+0x31/0x70 [ib_srpt]\n  Read of size 8 at addr ffff888141cc34b8 by task check/5093\n\n  Call Trace:\n   \u003cTASK\u003e\n   show_stack+0x4e/0x53\n   dump_stack_lvl+0x51/0x66\n   print_address_description.constprop.0.cold+0xea/0x41e\n   print_report.cold+0x90/0x205\n   kasan_report+0xb9/0xf0\n   __asan_load8+0x69/0x90\n   srpt_enable_tpg+0x31/0x70 [ib_srpt]\n   target_fabric_tpg_base_enable_store+0xe2/0x140 [target_core_mod]\n   configfs_write_iter+0x18b/0x210\n   new_sync_write+0x1f2/0x2f0\n   vfs_write+0x3e3/0x540\n   ksys_write+0xbb/0x140\n   __x64_sys_write+0x42/0x50\n   do_syscall_64+0x34/0x80\n   entry_SYSCALL_64_after_hwframe+0x46/0xb0\n   \u003c/TASK\u003e"
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              "value": "AV:L - The UAF is reached through local configfs operations on the LIO/srpt target hierarchy (enable store as in the KASAN report, and world-readable TPG attrib show handlers that call srpt_tpg_to_sport), not via remote SRP/RDMA connection processing.\nAC:H - The use-after-free only appears after srpt_remove_one frees struct srpt_port (RDMA device unbind/hot-remove/module teardown) while LIO configfs still holds references into the embedded srpt_port_id/se_wwn; an unprivileged attacker cannot induce that RDMA lifetime transition.\nPR:L - After the dangling state exists, CONFIGFS_ATTR show handlers such as srpt_tpg_attrib_*_show are mode S_IRUGO and dereference the freed sport via wwn-\u003epriv, so a normal unprivileged local user can trigger the UAF by reading those attributes without root or init-namespace capabilities.\nUI:N - Exploitation is just reading or writing the already-present configfs attributes; no separate victim action such as mounting a filesystem or opening a user-supplied file is required.\nS:U - This is a standard in-kernel use-after-free within the host kernel\u2019s authority and does not cross a VM, IOMMU, or other security-authority boundary.\nC:H - Use-after-free of srpt_port/srpt_port_id lets an attacker reuse the freed object and obtain arbitrary kernel read primitives, so confidentiality impact is High under kernel UAF guidance.\nI:H - The same heap UAF is exploitable via spraying/reallocation for corruption of kernel objects and control-flow hijacking, so integrity impact is High.\nA:H - The demonstrated KASAN use-after-free in srpt_enable_tpg and equivalent dangling dereferences in attrib paths can oops/panic the kernel, so availability impact is High."
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    "cveId": "CVE-2022-50129",
    "datePublished": "2025-06-18T11:02:55.576Z",
    "dateReserved": "2025-06-18T10:57:27.418Z",
    "dateUpdated": "2026-08-05T08:57:28.156Z",
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This patch decouples the lifetime of struct srpt_port\\n(controlled by the RDMA core) and struct srpt_port_id (controlled by LIO).\\nThis patch fixes the following KASAN complaint:\\n\\n  BUG: KASAN: use-after-free in srpt_enable_tpg+0x31/0x70 [ib_srpt]\\n  Read of size 8 at addr ffff888141cc34b8 by task check/5093\\n\\n  Call Trace:\\n   \u003cTASK\u003e\\n   show_stack+0x4e/0x53\\n   dump_stack_lvl+0x51/0x66\\n   print_address_description.constprop.0.cold+0xea/0x41e\\n   print_report.cold+0x90/0x205\\n   kasan_report+0xb9/0xf0\\n   __asan_load8+0x69/0x90\\n   srpt_enable_tpg+0x31/0x70 [ib_srpt]\\n   target_fabric_tpg_base_enable_store+0xe2/0x140 [target_core_mod]\\n   configfs_write_iter+0x18b/0x210\\n   new_sync_write+0x1f2/0x2f0\\n   vfs_write+0x3e3/0x540\\n   ksys_write+0xbb/0x140\\n   __x64_sys_write+0x42/0x50\\n   do_syscall_64+0x34/0x80\\n   entry_SYSCALL_64_after_hwframe+0x46/0xb0\\n   \u003c/TASK\u003e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/srpt: Se corrige un problema de use-after-free. Se cambian los miembros del puerto LIO dentro de struct srpt_port de miembros regulares a punteros. Se asignan las estructuras de datos del puerto LIO desde srpt_make_tport() y se liberan desde srpt_make_tport(). Se mantiene struct srpt_device mientras un puerto RDMA o un puerto de destino LIO est\u00e9 asociado a \u00e9l. Este parche desacopla la duraci\u00f3n de struct srpt_port (controlado por el n\u00facleo RDMA) y struct srpt_port_id (controlado por LIO). Este parche corrige la siguiente queja de KASAN: ERROR: KASAN: Use-After-Free en srpt_enable_tpg+0x31/0x70 [ib_srpt] Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff888141cc34b8 por la tarea check/5093 Rastreo de llamadas:  show_stack+0x4e/0x53 dump_stack_lvl+0x51/0x66 print_address_description.constprop.0.cold+0xea/0x41e print_report.cold+0x90/0x205 kasan_report+0xb9/0xf0 __asan_load8+0x69/0x90 srpt_enable_tpg+0x31/0x70 [ib_srpt] target_fabric_tpg_base_enable_store+0xe2/0x140 [target_core_mod] configfs_write_iter+0x18b/0x210 new_sync_write+0x1f2/0x2f0 vfs_write+0x3e3/0x540 ksys_write+0xbb/0x140 __x64_sys_write+0x42/0x50 do_syscall_64+0x34/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:40:27+00:00",
      "cve": "CVE-2022-50129",
      "id": "CVE-2022-50129",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "321",
      "product_status:known_affected": "66",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/srpt: Fix a use-after-free",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50129.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:22:59Z",
      "cve": "CVE-2022-50129",
      "id": "CVE-2022-50129",
      "initial_release_date": "2025-06-19T03:40:56Z",
      "product_status:known_affected": "465",
      "product_status:known_not_affected": "222",
      "product_status:recommended": "253",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50129",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50129.json",
      "version": "57"
    }
  }
}



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Tags
Taxonomy of the tags.





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.