CVE-2022-49803
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: netdevsim: Fix memory leak of nsim_dev->fa_cookie kmemleak reports this issue: unreferenced object 0xffff8881bac872d0 (size 8): comm "sh", pid 58603, jiffies 4481524462 (age 68.065s) hex dump (first 8 bytes): 04 00 00 00 de ad be ef ........ backtrace: [<00000000c80b8577>] __kmalloc+0x49/0x150 [<000000005292b8c6>] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim] [<0000000093d78e77>] full_proxy_write+0xf3/0x180 [<000000005a662c16>] vfs_write+0x1c5/0xaf0 [<000000007aabf84a>] ksys_write+0xed/0x1c0 [<000000005f1d2e47>] do_syscall_64+0x3b/0x90 [<000000006001c6ec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd The issue occurs in the following scenarios: nsim_dev_trap_fa_cookie_write() kmalloc() fa_cookie nsim_dev->fa_cookie = fa_cookie .. nsim_drv_remove() The fa_cookie allocked in nsim_dev_trap_fa_cookie_write() is not freed. To fix, add kfree(nsim_dev->fa_cookie) to nsim_drv_remove().
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-05-01 15:16:03.617000
Last modified
2026-11-05 20:17:12.897000
View original CVE JSON
{
"id": "CVE-2022-49803",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-05-01T15:16:03.617",
"lastModified": "2026-11-05T20:17:12.897",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: Fix memory leak of nsim_dev->fa_cookie\n\nkmemleak reports this issue:\n\nunreferenced object 0xffff8881bac872d0 (size 8):\n comm \"sh\", pid 58603, jiffies 4481524462 (age 68.065s)\n hex dump (first 8 bytes):\n 04 00 00 00 de ad be ef ........\n backtrace:\n [<00000000c80b8577>] __kmalloc+0x49/0x150\n [<000000005292b8c6>] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim]\n [<0000000093d78e77>] full_proxy_write+0xf3/0x180\n [<000000005a662c16>] vfs_write+0x1c5/0xaf0\n [<000000007aabf84a>] ksys_write+0xed/0x1c0\n [<000000005f1d2e47>] do_syscall_64+0x3b/0x90\n [<000000006001c6ec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe issue occurs in the following scenarios:\n\nnsim_dev_trap_fa_cookie_write()\n kmalloc() fa_cookie\n nsim_dev->fa_cookie = fa_cookie\n..\nnsim_drv_remove()\n\nThe fa_cookie allocked in nsim_dev_trap_fa_cookie_write() is not freed. To\nfix, add kfree(nsim_dev->fa_cookie) to nsim_drv_remove()."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netdevsim: Se corrige la pérdida de memoria de nsim_dev->fa_cookie. kmemleak informa de este problema: objeto sin referencia 0xffff8881bac872d0 (tamaño 8): comm \"sh\", pid 58603, jiffies 4481524462 (edad 68,065 s) volcado hexadecimal (primeros 8 bytes): 04 00 00 00 de ad be ef ........ backtrace: [<00000000c80b8577>] __kmalloc+0x49/0x150 [<000000005292b8c6>] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim] [<0000000093d78e77>] escritura de proxy completo+0xf3/0x180 [<000000005a662c16>] escritura de vfs+0x1c5/0xaf0 [<000000007aabf84a>] escritura de ksys+0xed/0x1c0 [<000000005f1d2e47>] llamada al sistema_64+0x3b/0x90 [<000000006001c6ec>] entrada_SYSCALL_64_after_hwframe+0x63/0xcd El problema ocurre en los siguientes escenarios: nsim_dev_trap_fa_cookie_write() kmalloc() fa_cookie nsim_dev->fa_cookie = fa_cookie .. nsim_drv_remove(): La fa_cookie bloqueada en nsim_dev_trap_fa_cookie_write() no se libera. Para solucionarlo, añada kfree(nsim_dev->fa_cookie) a nsim_drv_remove()."
}
],
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{
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{
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"source": "[email protected]",
"type": "Primary",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
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"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-05T19:48:58.960400Z",
"id": "CVE-2022-49803",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
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{
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}
],
"role": "CISA Coordinator",
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}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-401"
}
]
}
],
"configurations": [
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