CVE-2024-58088 (GCVE-0-2024-58088)
Vulnerability from cvelistv5
Published
2025-03-12 09:41
Modified
2026-05-11 21:03
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix deadlock when freeing cgroup storage The following commit bc235cdb423a ("bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]") first introduced deadlock prevention for fentry/fexit programs attaching on bpf_task_storage helpers. That commit also employed the logic in map free path in its v6 version. Later bpf_cgrp_storage was first introduced in c4bcfb38a95e ("bpf: Implement cgroup storage available to non-cgroup-attached bpf progs") which faces the same issue as bpf_task_storage, instead of its busy counter, NULL was passed to bpf_local_storage_map_free() which opened a window to cause deadlock: <TASK> (acquiring local_storage->lock) _raw_spin_lock_irqsave+0x3d/0x50 bpf_local_storage_update+0xd1/0x460 bpf_cgrp_storage_get+0x109/0x130 bpf_prog_a4d4a370ba857314_cgrp_ptr+0x139/0x170 ? __bpf_prog_enter_recur+0x16/0x80 bpf_trampoline_6442485186+0x43/0xa4 cgroup_storage_ptr+0x9/0x20 (holding local_storage->lock) bpf_selem_unlink_storage_nolock.constprop.0+0x135/0x160 bpf_selem_unlink_storage+0x6f/0x110 bpf_local_storage_map_free+0xa2/0x110 bpf_map_free_deferred+0x5b/0x90 process_one_work+0x17c/0x390 worker_thread+0x251/0x360 kthread+0xd2/0x100 ret_from_fork+0x34/0x50 ret_from_fork_asm+0x1a/0x30 </TASK> Progs: - A: SEC("fentry/cgroup_storage_ptr") - cgid (BPF_MAP_TYPE_HASH) Record the id of the cgroup the current task belonging to in this hash map, using the address of the cgroup as the map key. - cgrpa (BPF_MAP_TYPE_CGRP_STORAGE) If current task is a kworker, lookup the above hash map using function parameter @owner as the key to get its corresponding cgroup id which is then used to get a trusted pointer to the cgroup through bpf_cgroup_from_id(). This trusted pointer can then be passed to bpf_cgrp_storage_get() to finally trigger the deadlock issue. - B: SEC("tp_btf/sys_enter") - cgrpb (BPF_MAP_TYPE_CGRP_STORAGE) The only purpose of this prog is to fill Prog A's hash map by calling bpf_cgrp_storage_get() for as many userspace tasks as possible. Steps to reproduce: - Run A; - while (true) { Run B; Destroy B; } Fix this issue by passing its busy counter to the free procedure so it can be properly incremented before storage/smap locking.
References
Impacted products
Vendor Product Version
Linux Linux Version: c4bcfb38a95edb1021a53f2d0356a78120ecfbe4
Version: c4bcfb38a95edb1021a53f2d0356a78120ecfbe4
Version: c4bcfb38a95edb1021a53f2d0356a78120ecfbe4
Version: c4bcfb38a95edb1021a53f2d0356a78120ecfbe4
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{
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          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
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              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
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              "content": {
                "id": "CVE-2024-58088",
                "options": [
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                "timestamp": "2025-10-01T19:26:50.651245Z",
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          "dateUpdated": "2025-10-01T19:36:35.008Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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          "programFiles": [
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      "cpeApplicability": [
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix deadlock when freeing cgroup storage\n\nThe following commit\nbc235cdb423a (\"bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]\")\nfirst introduced deadlock prevention for fentry/fexit programs attaching\non bpf_task_storage helpers. That commit also employed the logic in map\nfree path in its v6 version.\n\nLater bpf_cgrp_storage was first introduced in\nc4bcfb38a95e (\"bpf: Implement cgroup storage available to non-cgroup-attached bpf progs\")\nwhich faces the same issue as bpf_task_storage, instead of its busy\ncounter, NULL was passed to bpf_local_storage_map_free() which opened\na window to cause deadlock:\n\n\t\u003cTASK\u003e\n\t\t(acquiring local_storage-\u003elock)\n\t_raw_spin_lock_irqsave+0x3d/0x50\n\tbpf_local_storage_update+0xd1/0x460\n\tbpf_cgrp_storage_get+0x109/0x130\n\tbpf_prog_a4d4a370ba857314_cgrp_ptr+0x139/0x170\n\t? __bpf_prog_enter_recur+0x16/0x80\n\tbpf_trampoline_6442485186+0x43/0xa4\n\tcgroup_storage_ptr+0x9/0x20\n\t\t(holding local_storage-\u003elock)\n\tbpf_selem_unlink_storage_nolock.constprop.0+0x135/0x160\n\tbpf_selem_unlink_storage+0x6f/0x110\n\tbpf_local_storage_map_free+0xa2/0x110\n\tbpf_map_free_deferred+0x5b/0x90\n\tprocess_one_work+0x17c/0x390\n\tworker_thread+0x251/0x360\n\tkthread+0xd2/0x100\n\tret_from_fork+0x34/0x50\n\tret_from_fork_asm+0x1a/0x30\n\t\u003c/TASK\u003e\n\nProgs:\n - A: SEC(\"fentry/cgroup_storage_ptr\")\n   - cgid (BPF_MAP_TYPE_HASH)\n\tRecord the id of the cgroup the current task belonging\n\tto in this hash map, using the address of the cgroup\n\tas the map key.\n   - cgrpa (BPF_MAP_TYPE_CGRP_STORAGE)\n\tIf current task is a kworker, lookup the above hash\n\tmap using function parameter @owner as the key to get\n\tits corresponding cgroup id which is then used to get\n\ta trusted pointer to the cgroup through\n\tbpf_cgroup_from_id(). This trusted pointer can then\n\tbe passed to bpf_cgrp_storage_get() to finally trigger\n\tthe deadlock issue.\n - B: SEC(\"tp_btf/sys_enter\")\n   - cgrpb (BPF_MAP_TYPE_CGRP_STORAGE)\n\tThe only purpose of this prog is to fill Prog A\u0027s\n\thash map by calling bpf_cgrp_storage_get() for as\n\tmany userspace tasks as possible.\n\nSteps to reproduce:\n - Run A;\n - while (true) { Run B; Destroy B; }\n\nFix this issue by passing its busy counter to the free procedure so\nit can be properly incremented before storage/smap locking."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:03:04.280Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6ecb9fa14eec5f15d97c84c36896871335f6ddfb"
        },
        {
          "url": "https://git.kernel.org/stable/c/fac674d2bd68f3479f27328626b42d1eebd11fef"
        },
        {
          "url": "https://git.kernel.org/stable/c/fcec95b4ab3e7bc6b2f36e5d59f7e24104ea87f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/c78f4afbd962f43a3989f45f3ca04300252b19b5"
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      ],
      "title": "bpf: Fix deadlock when freeing cgroup storage",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-58088",
    "datePublished": "2025-03-12T09:41:58.986Z",
    "dateReserved": "2025-03-06T15:52:09.187Z",
    "dateUpdated": "2026-05-11T21:03:04.280Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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