CVE-2025-38441
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto() syzbot found a potential access to uninit-value in nf_flow_pppoe_proto() Blamed commit forgot the Ethernet header. BUG: KMSAN: uninit-value in nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27 nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27 nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline] nf_hook_slow+0xe1/0x3d0 net/netfilter/core.c:623 nf_hook_ingress include/linux/netfilter_netdev.h:34 [inline] nf_ingress net/core/dev.c:5742 [inline] __netif_receive_skb_core+0x4aff/0x70c0 net/core/dev.c:5837 __netif_receive_skb_one_core net/core/dev.c:5975 [inline] __netif_receive_skb+0xcc/0xac0 net/core/dev.c:6090 netif_receive_skb_internal net/core/dev.c:6176 [inline] netif_receive_skb+0x57/0x630 net/core/dev.c:6235 tun_rx_batched+0x1df/0x980 drivers/net/tun.c:1485 tun_get_user+0x4ee0/0x6b40 drivers/net/tun.c:1938 tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1984 new_sync_write fs/read_write.c:593 [inline] vfs_write+0xb4b/0x1580 fs/read_write.c:686 ksys_write fs/read_write.c:738 [inline] __do_sys_write fs/read_write.c:749 [inline]
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-07-25 16:15:29.497000
Last modified
2026-11-05 21:18:31.607000
View original CVE JSON
{
"id": "CVE-2025-38441",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-07-25T16:15:29.497",
"lastModified": "2026-11-05T21:18:31.607",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto()\n\nsyzbot found a potential access to uninit-value in nf_flow_pppoe_proto()\n\nBlamed commit forgot the Ethernet header.\n\nBUG: KMSAN: uninit-value in nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27\n nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27\n nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline]\n nf_hook_slow+0xe1/0x3d0 net/netfilter/core.c:623\n nf_hook_ingress include/linux/netfilter_netdev.h:34 [inline]\n nf_ingress net/core/dev.c:5742 [inline]\n __netif_receive_skb_core+0x4aff/0x70c0 net/core/dev.c:5837\n __netif_receive_skb_one_core net/core/dev.c:5975 [inline]\n __netif_receive_skb+0xcc/0xac0 net/core/dev.c:6090\n netif_receive_skb_internal net/core/dev.c:6176 [inline]\n netif_receive_skb+0x57/0x630 net/core/dev.c:6235\n tun_rx_batched+0x1df/0x980 drivers/net/tun.c:1485\n tun_get_user+0x4ee0/0x6b40 drivers/net/tun.c:1938\n tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1984\n new_sync_write fs/read_write.c:593 [inline]\n vfs_write+0xb4b/0x1580 fs/read_write.c:686\n ksys_write fs/read_write.c:738 [inline]\n __do_sys_write fs/read_write.c:749 [inline]"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: flowtable: cuenta para el encabezado Ethernet en nf_flow_pppoe_proto() syzbot encontró un acceso potencial a uninit-value en nf_flow_pppoe_proto() El commit culpado olvidó el encabezado Ethernet. BUG: KMSAN: uninit-value in nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27 nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27 nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline] nf_hook_slow+0xe1/0x3d0 net/netfilter/core.c:623 nf_hook_ingress include/linux/netfilter_netdev.h:34 [inline] nf_ingress net/core/dev.c:5742 [inline] __netif_receive_skb_core+0x4aff/0x70c0 net/core/dev.c:5837 __netif_receive_skb_one_core net/core/dev.c:5975 [inline] __netif_receive_skb+0xcc/0xac0 net/core/dev.c:6090 netif_receive_skb_internal net/core/dev.c:6176 [inline] netif_receive_skb+0x57/0x630 net/core/dev.c:6235 tun_rx_batched+0x1df/0x980 drivers/net/tun.c:1485 tun_get_user+0x4ee0/0x6b40 drivers/net/tun.c:1938 tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1984 new_sync_write fs/read_write.c:593 [inline] vfs_write+0xb4b/0x1580 fs/read_write.c:686 ksys_write fs/read_write.c:738 [inline] __do_sys_write fs/read_write.c:749 [inline]\n"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"include/net/netfilter/nf_flow_table.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "d06977b9a4109f8738bb276125eb6a0b772bc433",
"lessThan": "a3aea97d55964e70a1e6426aa4cafdc036e8a2dd",
"versionType": "git",
"status": "affected"
},
{
"version": "8bf7c76a2a207ca2b4cfda0a279192adf27678d7",
"lessThan": "eed8960b289327235185b7c32649c3470a3e969b",
"versionType": "git",
"status": "affected"
},
{
"version": "a2471d271042ea18e8a6babc132a8716bb2f08b9",
"lessThan": "9fbc49429a23b02595ba82536c5ea425fdabb221",
"versionType": "git",
"status": "affected"
},
{
"version": "87b3593bed1868b2d9fe096c01bcdf0ea86cbebf",
"lessThan": "e0dd2e9729660f3f4fcb16e0aef87342911528ef",
"versionType": "git",
"status": "affected"
},
{
"version": "87b3593bed1868b2d9fe096c01bcdf0ea86cbebf",
"lessThan": "cfbf0665969af2c69d10c377d4c3d306e717efb4",
"versionType": "git",
"status": "affected"
},
{
"version": "87b3593bed1868b2d9fe096c01bcdf0ea86cbebf",
"lessThan": "18cdb3d982da8976b28d57691eb256ec5688fad2",
"versionType": "git",
"status": "affected"
},
{
"version": "cf366ee3bc1b7d1c76a882640ba3b3f8f1039163",
"versionType": "git",
"status": "affected"
},
{
"version": "5.15.157",
"lessThan": "5.15.189",
"versionType": "semver",
"status": "affected"
},
{
"version": "6.1.88",
"lessThan": "6.1.146",
"versionType": "semver",
"status": "affected"
},
{
"version": "6.6.29",
"lessThan": "6.6.99",
"versionType": "semver",
"status": "affected"
},
{
"version": "6.8.8",
"lessThan": "6.9",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"include/net/netfilter/nf_flow_table.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "6.9",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.9",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.189",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.146",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.99",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.39",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.15.7",
"lessThanOrEqual": "6.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.16",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"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"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-05T20:56:41.567168Z",
"id": "CVE-2025-38441",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-908"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.15.157",
"versionEndExcluding": "5.15.189",
"matchCriteriaId": "FC194FA5-5970-4468-A9B7-A223A03DDF6B"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.1.88",
"versionEndExcluding": "6.1.146",
"matchCriteriaId": "F8D46677-6F0B-4C10-9987-60AB4FCA1CF6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.6.29",
"versionEndExcluding": "6.6.99",
"matchCriteriaId": "CBA6037C-DACA-44CF-8E7A-462E48411AF6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.8.8",
"versionEndExcluding": "6.9",
"matchCriteriaId": "5816FBD4-3F69-480D-B4E4-8F653576EDEC"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9.1",
"versionEndExcluding": "6.12.39",
"matchCriteriaId": "AA17FC4D-E284-410F-9A4F-1435B81BCDC6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.13",
"versionEndExcluding": "6.15.7",
"matchCriteriaId": "F9C46937-5FA9-4335-AD7B-E7FC29453CE1"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:-:*:*:*:*:*:*",
"matchCriteriaId": "3F2A4A3D-068A-4CF2-A09F-9C7937DDB0A5"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*",
"matchCriteriaId": "F850DCEC-E08B-4317-A33B-D2DCF39F601B"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:*",
"matchCriteriaId": "91326417-E981-482E-A5A3-28BC1327521B"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc7:*:*:*:*:*:*",
"matchCriteriaId": "DAECDCD8-F556-4606-8D7B-5C6D47A501F2"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*",
"matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*",
"matchCriteriaId": "09709862-E348-4378-8632-5A7813EDDC86"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*",
"matchCriteriaId": "415BF58A-8197-43F5-B3D7-D1D63057A26E"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*",
"matchCriteriaId": "A0517869-312D-4429-80C2-561086E1421C"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*",
"matchCriteriaId": "85421F4E-C863-4ABF-B4B4-E887CC2F7F92"
}
]
}
]
},
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
"matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/18cdb3d982da8976b28d57691eb256ec5688fad2",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/9fbc49429a23b02595ba82536c5ea425fdabb221",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/a3aea97d55964e70a1e6426aa4cafdc036e8a2dd",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/cfbf0665969af2c69d10c377d4c3d306e717efb4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/e0dd2e9729660f3f4fcb16e0aef87342911528ef",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/eed8960b289327235185b7c32649c3470a3e969b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
]
}
]
}