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CVE-2022-50076 (GCVE-0-2022-50076)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2026-05-23 15:23
VLAI
Title
cifs: Fix memory leak on the deferred close
Summary
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix memory leak on the deferred close xfstests on smb21 report kmemleak as below: unreferenced object 0xffff8881767d6200 (size 64): comm "xfs_io", pid 1284, jiffies 4294777434 (age 20.789s) hex dump (first 32 bytes): 80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff .Z......x..c.... 00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00 .q.v............ backtrace: [<00000000ad04e6ea>] cifs_close+0x92/0x2c0 [<0000000028b93c82>] __fput+0xff/0x3f0 [<00000000d8116851>] task_work_run+0x85/0xc0 [<0000000027e14f9e>] do_exit+0x5e5/0x1240 [<00000000fb492b95>] do_group_exit+0x58/0xe0 [<00000000129a32d9>] __x64_sys_exit_group+0x28/0x30 [<00000000e3f7d8e9>] do_syscall_64+0x35/0x80 [<00000000102e8a0b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 When cancel the deferred close work, we should also cleanup the struct cifs_deferred_close.
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: 9e992755be8f2d458a0bcbefd19e493483c1dba2 , < 860efae127888ae535bc4eda1b7f27642727c69e (git)
Affected: 9e992755be8f2d458a0bcbefd19e493483c1dba2 , < 60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5 (git)
Affected: 9e992755be8f2d458a0bcbefd19e493483c1dba2 , < ca08d0eac020d48a3141dbec0a3cf64fbdb17cde (git)
Affected: 0ca6ac8a2691762307beaa4841255d1cfe6b2684 (git)
Affected: 5.13.12 , < 5.14 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.63 , ≤ 5.15.* (semver)
Unaffected: 5.19.4 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: Se corrige la p\u00e9rdida de memoria en el cierre diferido. xfstests en smb21 informa kmemleak como se muestra a continuaci\u00f3n: objeto sin referencia 0xffff8881767d6200 (tama\u00f1o 64): comm \"xfs_io\", pid 1284, jiffies 4294777434 (edad 20,789 s) volcado hexadecimal (primeros 32 bytes): 80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff .Z......x..c.... 00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00 .qv........... backtrace: [\u0026lt;00000000ad04e6ea\u0026gt;] cifs_close+0x92/0x2c0 [\u0026lt;0000000028b93c82\u0026gt;] __fput+0xff/0x3f0 [\u0026lt;00000000d8116851\u0026gt;] task_work_run+0x85/0xc0 [\u0026lt;0000000027e14f9e\u0026gt;] do_exit+0x5e5/0x1240 [\u0026lt;00000000fb492b95\u0026gt;] do_group_exit+0x58/0xe0 [\u0026lt;00000000129a32d9\u0026gt;] __x64_sys_exit_group+0x28/0x30 [\u0026lt;00000000e3f7d8e9\u0026gt;] do_syscall_64+0x35/0x80 [\u0026lt;00000000102e8a0b\u0026gt;] entry_SYSCALL_64_after_hwframe+0x46/0xb0 Cuando cancelamos el trabajo de cierre diferido, tambi\u00e9n debemos limpiar la estructura cifs_deferred_close."
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        "id": "CVE-2022-50076",
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      "cve": "CVE-2022-50076",
      "id": "CVE-2022-50076",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "122",
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      "status": "final",
      "title": "kernel: cifs: Fix memory leak on the deferred close",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50076.json",
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      "cve": "CVE-2022-50076",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50076",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50076.json",
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}



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