CVE-2022-49695
Estado: AnalizadaAlta (7.8)—
In the Linux kernel, the following vulnerability has been resolved:
igb: fix a use-after-free issue in igb_clean_tx_ring
Fix the following use-after-free bug in igb_clean_tx_ring routine when the NIC is running in XDP mode. The issue can be triggered redirecting traffic into the igb NIC and then closing the device while the traffic is flowing.
Detalles técnicos trazas, registros y código del informe original
[ 73.322719] CPU: 1 PID: 487 Comm: xdp_redirect Not tainted 5.18.3-apu2 #9 [ 73.330639] Hardware name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017 [ 73.337434] RIP: 0010:refcount_warn_saturate+0xa7/0xf0 [ 73.362283] RSP: 0018:ffffc9000081f798 EFLAGS: 00010282 [ 73.367761] RAX: 0000000000000000 RBX: ffffc90000420f80 RCX: 0000000000000000 [ 73.375200] RDX: ffff88811ad22d00 RSI: ffff88811ad171e0 RDI: ffff88811ad171e0 [ 73.382590] RBP: 0000000000000900 R08: ffffffff82298f28 R09: 0000000000000058 [ 73.390008] R10: 0000000000000219 R11: ffffffff82280f40 R12: 0000000000000090 [ 73.397356] R13: ffff888102343a40 R14: ffff88810359e0e4 R15: 0000000000000000 [ 73.404806] FS: 00007ff38d31d740(0000) GS:ffff88811ad00000(0000) knlGS:0000000000000000 [ 73.413129] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.419096] CR2: 000055cff35f13f8 CR3: 0000000106391000 CR4: 00000000000406e0 [ 73.426565] Call Trace: [ 73.429087] <TASK> [ 73.431314] igb_clean_tx_ring+0x43/0x140 [igb] [ 73.436002] igb_down+0x1d7/0x220 [igb] [ 73.439974] __igb_close+0x3c/0x120 [igb] [ 73.444118] igb_xdp+0x10c/0x150 [igb] [ 73.447983] ? igb_pci_sriov_configure+0x70/0x70 [igb] [ 73.453362] dev_xdp_install+0xda/0x110 [ 73.457371] dev_xdp_attach+0x1da/0x550 [ 73.461369] do_setlink+0xfd0/0x10f0 [ 73.465166] ? __nla_validate_parse+0x89/0xc70 [ 73.469714] rtnl_setlink+0x11a/0x1e0 [ 73.473547] rtnetlink_rcv_msg+0x145/0x3d0 [ 73.477709] ? rtnl_calcit.isra.0+0x130/0x130 [ 73.482258] netlink_rcv_skb+0x8d/0x110 [ 73.486229] netlink_unicast+0x230/0x340 [ 73.490317] netlink_sendmsg+0x215/0x470 [ 73.494395] __sys_sendto+0x179/0x190 [ 73.498268] ? move_addr_to_user+0x37/0x70 [ 73.502547] ? __sys_getsockname+0x84/0xe0 [ 73.506853] ? netlink_setsockopt+0x1c1/0x4a0 [ 73.511349] ? __sys_setsockopt+0xc8/0x1d0 [ 73.515636] __x64_sys_sendto+0x20/0x30 [ 73.519603] do_syscall_64+0x3b/0x80 [ 73.523399] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.528712] RIP: 0033:0x7ff38d41f20c [ 73.551866] RSP: 002b:00007fff3b945a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 73.559640] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff38d41f20c [ 73.567066] RDX: 0000000000000034 RSI: 00007fff3b945b30 RDI: 0000000000000003 [ 73.574457] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.581852] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3b945ab0 [ 73.589179] R13: 0000000000000000 R14: 0000000000000003 R15: 00007fff3b945b30 [ 73.596545] </TASK> [ 73.598842] ---[ end trace 0000000000000000 ]---
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.29%
- Percentil entre todas las CVEs puntuadas: 20
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation85 % - Impacto principal
T1059Command and Scripting Interpreterexecution70 %
Vulnerabilidad de escalada local (AV:L, PR:L) en driver igb del kernel Linux. Use-after-free (CWE-416) exploitable por usuario local con privilegios para ejecutar código con contexto del kernel.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-416
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2022-49695",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2022-49695",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-02-27T18:15:05.537306Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "9cbc948b5a20c9c054d9631099c0426c16da546b",
"lessThan": "c12a2c9b1b460ed72e6b3c33aac1ef51b0329b66",
"versionType": "git"
},
{
"status": "affected",
"version": "9cbc948b5a20c9c054d9631099c0426c16da546b",
"lessThan": "2af944210dc23d43d8208dafac4df7be7e3c168b",
"versionType": "git"
},
{
"status": "affected",
"version": "9cbc948b5a20c9c054d9631099c0426c16da546b",
"lessThan": "68a0ed06dcd5d3ea732d011c0b83d66e4791f521",
"versionType": "git"
},
{
"status": "affected",
"version": "9cbc948b5a20c9c054d9631099c0426c16da546b",
"lessThan": "3f6a57ee8544ec3982f8a3cbcbf4aea7d47eb9ec",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/intel/igb/igb_main.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.127",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.51",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "5.18.8",
"versionType": "semver",
"lessThanOrEqual": "5.18.*"
},
{
"status": "unaffected",
"version": "5.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/intel/igb/igb_main.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-02-26T07:01:44.260",
"references": [
{
"url": "https://git.kernel.org/stable/c/2af944210dc23d43d8208dafac4df7be7e3c168b",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/3f6a57ee8544ec3982f8a3cbcbf4aea7d47eb9ec",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/68a0ed06dcd5d3ea732d011c0b83d66e4791f521",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c12a2c9b1b460ed72e6b3c33aac1ef51b0329b66",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigb: fix a use-after-free issue in igb_clean_tx_ring\n\nFix the following use-after-free bug in igb_clean_tx_ring routine when\nthe NIC is running in XDP mode. The issue can be triggered redirecting\ntraffic into the igb NIC and then closing the device while the traffic\nis flowing.\n\n[ 73.322719] CPU: 1 PID: 487 Comm: xdp_redirect Not tainted 5.18.3-apu2 #9\n[ 73.330639] Hardware name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017\n[ 73.337434] RIP: 0010:refcount_warn_saturate+0xa7/0xf0\n[ 73.362283] RSP: 0018:ffffc9000081f798 EFLAGS: 00010282\n[ 73.367761] RAX: 0000000000000000 RBX: ffffc90000420f80 RCX: 0000000000000000\n[ 73.375200] RDX: ffff88811ad22d00 RSI: ffff88811ad171e0 RDI: ffff88811ad171e0\n[ 73.382590] RBP: 0000000000000900 R08: ffffffff82298f28 R09: 0000000000000058\n[ 73.390008] R10: 0000000000000219 R11: ffffffff82280f40 R12: 0000000000000090\n[ 73.397356] R13: ffff888102343a40 R14: ffff88810359e0e4 R15: 0000000000000000\n[ 73.404806] FS: 00007ff38d31d740(0000) GS:ffff88811ad00000(0000) knlGS:0000000000000000\n[ 73.413129] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 73.419096] CR2: 000055cff35f13f8 CR3: 0000000106391000 CR4: 00000000000406e0\n[ 73.426565] Call Trace:\n[ 73.429087] <TASK>\n[ 73.431314] igb_clean_tx_ring+0x43/0x140 [igb]\n[ 73.436002] igb_down+0x1d7/0x220 [igb]\n[ 73.439974] __igb_close+0x3c/0x120 [igb]\n[ 73.444118] igb_xdp+0x10c/0x150 [igb]\n[ 73.447983] ? igb_pci_sriov_configure+0x70/0x70 [igb]\n[ 73.453362] dev_xdp_install+0xda/0x110\n[ 73.457371] dev_xdp_attach+0x1da/0x550\n[ 73.461369] do_setlink+0xfd0/0x10f0\n[ 73.465166] ? __nla_validate_parse+0x89/0xc70\n[ 73.469714] rtnl_setlink+0x11a/0x1e0\n[ 73.473547] rtnetlink_rcv_msg+0x145/0x3d0\n[ 73.477709] ? rtnl_calcit.isra.0+0x130/0x130\n[ 73.482258] netlink_rcv_skb+0x8d/0x110\n[ 73.486229] netlink_unicast+0x230/0x340\n[ 73.490317] netlink_sendmsg+0x215/0x470\n[ 73.494395] __sys_sendto+0x179/0x190\n[ 73.498268] ? move_addr_to_user+0x37/0x70\n[ 73.502547] ? __sys_getsockname+0x84/0xe0\n[ 73.506853] ? netlink_setsockopt+0x1c1/0x4a0\n[ 73.511349] ? __sys_setsockopt+0xc8/0x1d0\n[ 73.515636] __x64_sys_sendto+0x20/0x30\n[ 73.519603] do_syscall_64+0x3b/0x80\n[ 73.523399] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 73.528712] RIP: 0033:0x7ff38d41f20c\n[ 73.551866] RSP: 002b:00007fff3b945a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\n[ 73.559640] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff38d41f20c\n[ 73.567066] RDX: 0000000000000034 RSI: 00007fff3b945b30 RDI: 0000000000000003\n[ 73.574457] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000\n[ 73.581852] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3b945ab0\n[ 73.589179] R13: 0000000000000000 R14: 0000000000000003 R15: 00007fff3b945b30\n[ 73.596545] </TASK>\n[ 73.598842] ---[ end trace 0000000000000000 ]---"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: igb: se soluciona un problema de use-after-free en igb_clean_tx_ring Se soluciona el siguiente error de use-after-free en la rutina igb_clean_tx_ring cuando la NIC se ejecuta en modo XDP. El problema se puede desencadenar al redirigir el tráfico a la NIC igb y luego cerrar el dispositivo mientras fluye el tráfico. [ 73.322719] CPU: 1 PID: 487 Comm: xdp_redirect Not tainted 5.18.3-apu2 #9 [ 73.330639] Hardware name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017 [ 73.337434] RIP: 0010:refcount_warn_saturate+0xa7/0xf0 [ 73.362283] RSP: 0018:ffffc9000081f798 EFLAGS: 00010282 [ 73.367761] RAX: 0000000000000000 RBX: ffffc90000420f80 RCX: 0000000000000000 [ 73.375200] RDX: ffff88811ad22d00 RSI: ffff88811ad171e0 RDI: ffff88811ad171e0 [ 73.382590] RBP: 0000000000000900 R08: ffffffff82298f28 R09: 0000000000000058 [ 73.390008] R10: 0000000000000219 R11: ffffffff82280f40 R12: 0000000000000090 [ 73.397356] R13: ffff888102343a40 R14: ffff88810359e0e4 R15: 0000000000000000 [ 73.404806] FS: 00007ff38d31d740(0000) GS:ffff88811ad00000(0000) knlGS:0000000000000000 [ 73.413129] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.419096] CR2: 000055cff35f13f8 CR3: 0000000106391000 CR4: 00000000000406e0 [ 73.426565] Call Trace: [ 73.429087] [ 73.431314] igb_clean_tx_ring+0x43/0x140 [igb] [ 73.436002] igb_down+0x1d7/0x220 [igb] [ 73.439974] __igb_close+0x3c/0x120 [igb] [ 73.444118] igb_xdp+0x10c/0x150 [igb] [ 73.447983] ? igb_pci_sriov_configure+0x70/0x70 [igb] [ 73.453362] dev_xdp_install+0xda/0x110 [ 73.457371] dev_xdp_attach+0x1da/0x550 [ 73.461369] do_setlink+0xfd0/0x10f0 [ 73.465166] ? __nla_validate_parse+0x89/0xc70 [ 73.469714] rtnl_setlink+0x11a/0x1e0 [ 73.473547] rtnetlink_rcv_msg+0x145/0x3d0 [ 73.477709] ? rtnl_calcit.isra.0+0x130/0x130 [ 73.482258] netlink_rcv_skb+0x8d/0x110 [ 73.486229] netlink_unicast+0x230/0x340 [ 73.490317] netlink_sendmsg+0x215/0x470 [ 73.494395] __sys_sendto+0x179/0x190 [ 73.498268] ? move_addr_to_user+0x37/0x70 [ 73.502547] ? __sys_getsockname+0x84/0xe0 [ 73.506853] ? netlink_setsockopt+0x1c1/0x4a0 [ 73.511349] ? __sys_setsockopt+0xc8/0x1d0 [ 73.515636] __x64_sys_sendto+0x20/0x30 [ 73.519603] do_syscall_64+0x3b/0x80 [ 73.523399] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.528712] RIP: 0033:0x7ff38d41f20c [ 73.551866] RSP: 002b:00007fff3b945a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 73.559640] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff38d41f20c [ 73.567066] RDX: 0000000000000034 RSI: 00007fff3b945b30 RDI: 0000000000000003 [ 73.574457] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.581852] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3b945ab0 [ 73.589179] R13: 0000000000000000 R14: 0000000000000003 R15: 00007fff3b945b30 [ 73.596545] [ 73.598842] ---[ end trace 0000000000000000 ]--- "
}
],
"lastModified": "2026-06-17T05:18:53.053",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "17C6DD28-56C5-4F2F-8125-786544F1C9E4",
"versionEndExcluding": "5.10.127",
"versionStartIncluding": "5.10"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B43F7696-8D52-482D-9080-84279B0CB38C",
"versionEndExcluding": "5.15.51",
"versionStartIncluding": "5.11"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0172D3FA-DDEB-482A-A270-4A1495A8798C",
"versionEndExcluding": "5.18.8",
"versionStartIncluding": "5.16"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A8C30C2D-F82D-4D37-AB48-D76ABFBD5377"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BF8547FC-C849-4F1B-804B-A93AE2F04A92"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F3068028-F453-4A1C-B80F-3F5609ACEF60"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}