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CVE-2022-49801 (GCVE-0-2022-49801)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-05-23 15:22
VLAI
Title
tracing: Fix memory leak in tracing_read_pipe()
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix memory leak in tracing_read_pipe() kmemleak reports this issue: unreferenced object 0xffff888105a18900 (size 128): comm "test_progs", pid 18933, jiffies 4336275356 (age 22801.766s) hex dump (first 32 bytes): 25 73 00 90 81 88 ff ff 26 05 00 00 42 01 58 04 %s......&...B.X. 03 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000560143a1>] __kmalloc_node_track_caller+0x4a/0x140 [<000000006af00822>] krealloc+0x8d/0xf0 [<00000000c309be6a>] trace_iter_expand_format+0x99/0x150 [<000000005a53bdb6>] trace_check_vprintf+0x1e0/0x11d0 [<0000000065629d9d>] trace_event_printf+0xb6/0xf0 [<000000009a690dc7>] trace_raw_output_bpf_trace_printk+0x89/0xc0 [<00000000d22db172>] print_trace_line+0x73c/0x1480 [<00000000cdba76ba>] tracing_read_pipe+0x45c/0x9f0 [<0000000015b58459>] vfs_read+0x17b/0x7c0 [<000000004aeee8ed>] ksys_read+0xed/0x1c0 [<0000000063d3d898>] do_syscall_64+0x3b/0x90 [<00000000a06dda7f>] entry_SYSCALL_64_after_hwframe+0x63/0xcd iter->fmt alloced in tracing_read_pipe() -> .. ->trace_iter_expand_format(), but not freed, to fix, add free in tracing_release_pipe()
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: efbbdaa22bb78761bff8dfdde027ad04bedd47ce , < 2c21ee020ce43d744ecd7f3e9bddfcaafef270ce (git)
Affected: efbbdaa22bb78761bff8dfdde027ad04bedd47ce , < a7d3f8f33c113478737bc61bb32ec5f9a987da7d (git)
Affected: efbbdaa22bb78761bff8dfdde027ad04bedd47ce , < 649e72070cbbb8600eb823833e4748f5a0815116 (git)
Affected: 840ce9cfc86f89c335625ec297acc0375f82e19b (git)
Affected: 5.10.190 , < 5.11 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.80 , ≤ 5.15.* (semver)
Unaffected: 6.0.10 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tracing: Fix memory leakage in tracing_read_pipe() kmemleak informa de este problema: unreferenced object 0xffff888105a18900 (size 128): comm \"test_progs\", pid 18933, jiffies 4336275356 (age 22801.766s) hex dump (first 32 bytes): 25 73 00 90 81 88 ff ff 26 05 00 00 42 01 58 04 %s......\u0026amp;...BX 03 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [\u0026lt;00000000560143a1\u0026gt;] __kmalloc_nodo_rastreador_llamador+0x4a/0x140 [\u0026lt;000000006af00822\u0026gt;] krealloc+0x8d/0xf0 [\u0026lt;00000000c309be6a\u0026gt;] trace_iter_expand_format+0x99/0x150 [\u0026lt;000000005a53bdb6\u0026gt;] trace_check_vprintf+0x1e0/0x11d0 [\u0026lt;0000000065629d9d\u0026gt;] trace_event_printf+0xb6/0xf0 [\u0026lt;000000009a690dc7\u0026gt;] trace_raw_output_bpf_trace_printk+0x89/0xc0 [\u0026lt;00000000d22db172\u0026gt;] imprimir_l\u00ednea_de_seguimiento+0x73c/0x1480 [\u0026lt;00000000cdba76ba\u0026gt;] conducto_de_lectura_de_seguimiento+0x45c/0x9f0 [\u0026lt;0000000015b58459\u0026gt;] lectura_vfs+0x17b/0x7c0 [\u0026lt;000000004aeee8ed\u0026gt;] lectura_ksys+0xed/0x1c0 [\u0026lt;0000000063d3d898\u0026gt;] hacer_llamada_al_sistema_64+0x3b/0x90 [\u0026lt;00000000a06dda7f\u0026gt;] entrada_SYSCALL_64_despu\u00e9s_de_hwframe+0x63/0xcd iter-\u0026gt;fmt asignado en conducto_de_lectura_de_seguimiento() -\u0026gt; .. -\u0026gt;trace_iter_expand_format(), pero no se libera, para solucionarlo, agregue free en tracing_release_pipe()"
          }
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        "id": "CVE-2022-49801",
        "lastModified": "2026-06-17T05:19:10.737",
        "metrics": {
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                "attackVector": "LOCAL",
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                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
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      "cve": "CVE-2022-49801",
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      "product_status:known_affected": "136",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tracing: Fix memory leak in tracing_read_pipe()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49801.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:25:23Z",
      "cve": "CVE-2022-49801",
      "id": "CVE-2022-49801",
      "initial_release_date": "2025-05-06T03:07:28Z",
      "product_status:known_affected": "339",
      "product_status:known_not_affected": "384",
      "product_status:recommended": "214",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49801",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49801.json",
      "version": "40"
    }
  }
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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