FKIE_CVE-2025-22103
Vulnerability from fkie_nvd - Published: 2025-04-16 15:16 - Updated: 2026-09-14 12:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: fix NULL pointer dereference in l3mdev_l3_rcv
When delete l3s ipvlan:
ip link del link eth0 ipvlan1 type ipvlan mode l3s
This may cause a null pointer dereference:
Call trace:
ip_rcv_finish+0x48/0xd0
ip_rcv+0x5c/0x100
__netif_receive_skb_one_core+0x64/0xb0
__netif_receive_skb+0x20/0x80
process_backlog+0xb4/0x204
napi_poll+0xe8/0x294
net_rx_action+0xd8/0x22c
__do_softirq+0x12c/0x354
This is because l3mdev_l3_rcv() visit dev->l3mdev_ops after
ipvlan_l3s_unregister() assign the dev->l3mdev_ops to NULL. The process
like this:
(CPU1) | (CPU2)
l3mdev_l3_rcv() |
check dev->priv_flags: |
master = skb->dev; |
|
| ipvlan_l3s_unregister()
| set dev->priv_flags
| dev->l3mdev_ops = NULL;
|
visit master->l3mdev_ops |
To avoid this by do not set dev->l3mdev_ops when unregister l3s ipvlan.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ipvlan/ipvlan_l3s.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "1da52878f7fb74ace304f74325bb89e3e5546b55",
"status": "affected",
"version": "c675e06a98a474f7ad0af32ce467613da818da52",
"versionType": "git"
},
{
"lessThan": "d97d6b1bd2b7f2a188d261d44c4519a13b8c406a",
"status": "affected",
"version": "c675e06a98a474f7ad0af32ce467613da818da52",
"versionType": "git"
},
{
"lessThan": "8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862",
"status": "affected",
"version": "c675e06a98a474f7ad0af32ce467613da818da52",
"versionType": "git"
},
{
"lessThan": "52b44d8c653459c658b733d13658afdde45f6836",
"status": "affected",
"version": "c675e06a98a474f7ad0af32ce467613da818da52",
"versionType": "git"
},
{
"lessThan": "59599bce44af3df7a215ebc81cb166426e1c9204",
"status": "affected",
"version": "c675e06a98a474f7ad0af32ce467613da818da52",
"versionType": "git"
},
{
"lessThan": "f9dff65140efc289f01bcf39c3ca66a8806b6132",
"status": "affected",
"version": "c675e06a98a474f7ad0af32ce467613da818da52",
"versionType": "git"
},
{
"lessThan": "0032c99e83b9ce6d5995d65900aa4b6ffb501cce",
"status": "affected",
"version": "c675e06a98a474f7ad0af32ce467613da818da52",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/ipvlan/ipvlan_l3s.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.1"
},
{
"lessThan": "5.1",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.46",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.14.*",
"status": "unaffected",
"version": "6.14.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2D4111B6-DFBE-49AE-8EF0-D64A9F341C18",
"versionEndExcluding": "6.12.46",
"versionStartIncluding": "5.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "633A38C1-75C8-452D-8F1C-DA0269FD2687",
"versionEndExcluding": "6.14.2",
"versionStartIncluding": "6.13",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix NULL pointer dereference in l3mdev_l3_rcv\n\nWhen delete l3s ipvlan:\n\n ip link del link eth0 ipvlan1 type ipvlan mode l3s\n\nThis may cause a null pointer dereference:\n\n Call trace:\n ip_rcv_finish+0x48/0xd0\n ip_rcv+0x5c/0x100\n __netif_receive_skb_one_core+0x64/0xb0\n __netif_receive_skb+0x20/0x80\n process_backlog+0xb4/0x204\n napi_poll+0xe8/0x294\n net_rx_action+0xd8/0x22c\n __do_softirq+0x12c/0x354\n\nThis is because l3mdev_l3_rcv() visit dev-\u003el3mdev_ops after\nipvlan_l3s_unregister() assign the dev-\u003el3mdev_ops to NULL. The process\nlike this:\n\n (CPU1) | (CPU2)\n l3mdev_l3_rcv() |\n check dev-\u003epriv_flags: |\n master = skb-\u003edev; |\n |\n | ipvlan_l3s_unregister()\n | set dev-\u003epriv_flags\n | dev-\u003el3mdev_ops = NULL;\n |\n visit master-\u003el3mdev_ops |\n\nTo avoid this by do not set dev-\u003el3mdev_ops when unregister l3s ipvlan."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: corregir la desreferencia de puntero nulo en l3mdev_l3_rcv Al eliminar l3s ipvlan: ip link del link eth0 ipvlan1 type ipvlan mode l3s Esto puede causar una desreferencia de puntero nulo: Rastreo de llamada: ip_rcv_finish+0x48/0xd0 ip_rcv+0x5c/0x100 __netif_receive_skb_one_core+0x64/0xb0 __netif_receive_skb+0x20/0x80 process_backlog+0xb4/0x204 napi_poll+0xe8/0x294 net_rx_action+0xd8/0x22c __do_softirq+0x12c/0x354 Esto se debe a que l3mdev_l3_rcv() visita Despu\u00e9s de ejecutar ipvlan_l3s_unregister(), dev-\u0026gt;l3mdev_ops asigna el valor NULL a dev-\u0026gt;l3mdev_ops. El proceso es el siguiente: (CPU1) | (CPU2) l3mdev_l3_rcv() | check dev-\u0026gt;priv_flags: | master = skb-\u0026gt;dev; | | | ipvlan_l3s_unregister() | set dev-\u0026gt;priv_flags | dev-\u0026gt;l3mdev_ops = NULL; | visit master-\u0026gt;l3mdev_ops | Para evitar esto, no configure dev-\u0026gt;l3mdev_ops al cancelar el registro de ipvlan l3s."
}
],
"id": "CVE-2025-22103",
"lastModified": "2026-09-14T12:17:35.353",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"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"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2025-04-16T15:16:04.650",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/0032c99e83b9ce6d5995d65900aa4b6ffb501cce"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/1da52878f7fb74ace304f74325bb89e3e5546b55"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/52b44d8c653459c658b733d13658afdde45f6836"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/59599bce44af3df7a215ebc81cb166426e1c9204"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d97d6b1bd2b7f2a188d261d44c4519a13b8c406a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/f9dff65140efc289f01bcf39c3ca66a8806b6132"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-476"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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