CVE-2022-50076
Full vulnerability record from the local CVENow database.
Description
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
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-06-18 11:15:36.513000
Last modified
2026-11-05 20:17:22.583000
View original CVE JSON
{
"id": "CVE-2022-50076",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-06-18T11:15:36.513",
"lastModified": "2026-11-05T20:17:22.583",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak on the deferred close\n\nxfstests on smb21 report kmemleak as below:\n\n unreferenced object 0xffff8881767d6200 (size 64):\n comm \"xfs_io\", pid 1284, jiffies 4294777434 (age 20.789s)\n hex dump (first 32 bytes):\n 80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff .Z......x..c....\n 00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00 .q.v............\n backtrace:\n [<00000000ad04e6ea>] cifs_close+0x92/0x2c0\n [<0000000028b93c82>] __fput+0xff/0x3f0\n [<00000000d8116851>] task_work_run+0x85/0xc0\n [<0000000027e14f9e>] do_exit+0x5e5/0x1240\n [<00000000fb492b95>] do_group_exit+0x58/0xe0\n [<00000000129a32d9>] __x64_sys_exit_group+0x28/0x30\n [<00000000e3f7d8e9>] do_syscall_64+0x35/0x80\n [<00000000102e8a0b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nWhen cancel the deferred close work, we should also cleanup the struct\ncifs_deferred_close."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: Se corrige la pérdida de memoria en el cierre diferido. xfstests en smb21 informa kmemleak como se muestra a continuación: objeto sin referencia 0xffff8881767d6200 (tamaño 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: [<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 Cuando cancelamos el trabajo de cierre diferido, también debemos limpiar la estructura cifs_deferred_close."
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"privilegesRequired": "LOW",
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"integrityImpact": "NONE",
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