CVE-2022-49728
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ipv6: Fix signed integer overflow in __ip6_append_data
Resurrect ubsan overflow checks and ubsan report this warning, fix it by change the variable [length] type to size_t.
Changes since v1: -Change the variable [length] type to unsigned, as Eric Dumazet suggested. Changes since v2: -Don't change exthdrlen type in ip6_make_skb, as Paolo Abeni suggested. Changes since v3: -Don't change ulen type in udpv6_sendmsg and l2tp_ip6_sendmsg, as Jakub Kicinski suggested.
Detalles técnicos trazas, registros y código del informe original
UBSAN: signed-integer-overflow in net/ipv6/ip6_output.c:1489:19 2147479552 + 8567 cannot be represented in type 'int' CPU: 0 PID: 253 Comm: err Not tainted 5.16.0+ #1 Hardware name: linux,dummy-virt (DT) Call trace: dump_backtrace+0x214/0x230 show_stack+0x30/0x78 dump_stack_lvl+0xf8/0x118 dump_stack+0x18/0x30 ubsan_epilogue+0x18/0x60 handle_overflow+0xd0/0xf0 __ubsan_handle_add_overflow+0x34/0x44 __ip6_append_data.isra.48+0x1598/0x1688 ip6_append_data+0x128/0x260 udpv6_sendmsg+0x680/0xdd0 inet6_sendmsg+0x54/0x90 sock_sendmsg+0x70/0x88 ____sys_sendmsg+0xe8/0x368 ___sys_sendmsg+0x98/0xe0 __sys_sendmmsg+0xf4/0x3b8 __arm64_sys_sendmmsg+0x34/0x48 invoke_syscall+0x64/0x160 el0_svc_common.constprop.4+0x124/0x300 do_el0_svc+0x44/0xc8 el0_svc+0x3c/0x1e8 el0t_64_sync_handler+0x88/0xb0 el0t_64_sync+0x16c/0x170
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
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).
Tecnologías afectadas (1)
CWE
- CWE-190
Referencias
- https://git.kernel.org/stable/c/70549c80fe80ac4e2a22068c76ebebced24f7e74
- https://git.kernel.org/stable/c/84dc940890e91e42898e4443a093281702440abf
- https://git.kernel.org/stable/c/f26422eabeb517629568edf8c2dd9c6cb9147584
- https://git.kernel.org/stable/c/f93431c86b631bbca5614c66f966bf3ddb3c2803
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2022-49728",
"cveTags": [],
"metrics": {
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{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
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{
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"affectedData": [
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"product": "Linux",
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],
"programFiles": [
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"net/ipv6/ip6_output.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
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"version": "2.6.12"
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{
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"version": "0",
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{
"status": "unaffected",
"version": "5.10.236",
"versionType": "semver",
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},
{
"status": "unaffected",
"version": "5.15.180",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "5.18.6",
"versionType": "semver",
"lessThanOrEqual": "5.18.*"
},
{
"status": "unaffected",
"version": "5.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"include/net/ipv6.h",
"net/ipv6/ip6_output.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-02-26T07:01:48.433",
"references": [
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"url": "https://git.kernel.org/stable/c/70549c80fe80ac4e2a22068c76ebebced24f7e74",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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"tags": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f93431c86b631bbca5614c66f966bf3ddb3c2803",
"tags": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html",
"source": "af854a3a-2127-422b-91ae-364da2661108"
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],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-190"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix signed integer overflow in __ip6_append_data\n\nResurrect ubsan overflow checks and ubsan report this warning,\nfix it by change the variable [length] type to size_t.\n\nUBSAN: signed-integer-overflow in net/ipv6/ip6_output.c:1489:19\n2147479552 + 8567 cannot be represented in type 'int'\nCPU: 0 PID: 253 Comm: err Not tainted 5.16.0+ #1\nHardware name: linux,dummy-virt (DT)\nCall trace:\n dump_backtrace+0x214/0x230\n show_stack+0x30/0x78\n dump_stack_lvl+0xf8/0x118\n dump_stack+0x18/0x30\n ubsan_epilogue+0x18/0x60\n handle_overflow+0xd0/0xf0\n __ubsan_handle_add_overflow+0x34/0x44\n __ip6_append_data.isra.48+0x1598/0x1688\n ip6_append_data+0x128/0x260\n udpv6_sendmsg+0x680/0xdd0\n inet6_sendmsg+0x54/0x90\n sock_sendmsg+0x70/0x88\n ____sys_sendmsg+0xe8/0x368\n ___sys_sendmsg+0x98/0xe0\n __sys_sendmmsg+0xf4/0x3b8\n __arm64_sys_sendmmsg+0x34/0x48\n invoke_syscall+0x64/0x160\n el0_svc_common.constprop.4+0x124/0x300\n do_el0_svc+0x44/0xc8\n el0_svc+0x3c/0x1e8\n el0t_64_sync_handler+0x88/0xb0\n el0t_64_sync+0x16c/0x170\n\nChanges since v1:\n-Change the variable [length] type to unsigned, as Eric Dumazet suggested.\nChanges since v2:\n-Don't change exthdrlen type in ip6_make_skb, as Paolo Abeni suggested.\nChanges since v3:\n-Don't change ulen type in udpv6_sendmsg and l2tp_ip6_sendmsg, as\nJakub Kicinski suggested."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv6: Corregir desbordamiento de entero con signo en __ip6_append_data Resucita los controles de desbordamiento de ubsan y ubsan informa esta advertencia, corrígela cambiando el tipo de variable [length] type to size_t. UBSAN: signed-integer-overflow in net/ipv6/ip6_output.c:1489:19 2147479552 + 8567 cannot be represented in type 'int' CPU: 0 PID: 253 Comm: err Not tainted 5.16.0+ #1 Hardware name: linux,dummy-virt (DT) Call trace: dump_backtrace+0x214/0x230 show_stack+0x30/0x78 dump_stack_lvl+0xf8/0x118 dump_stack+0x18/0x30 ubsan_epilogue+0x18/0x60 handle_overflow+0xd0/0xf0 __ubsan_handle_add_overflow+0x34/0x44 __ip6_append_data.isra.48+0x1598/0x1688 ip6_append_data+0x128/0x260 udpv6_sendmsg+0x680/0xdd0 inet6_sendmsg+0x54/0x90 sock_sendmsg+0x70/0x88 ____sys_sendmsg+0xe8/0x368 ___sys_sendmsg+0x98/0xe0 __sys_sendmmsg+0xf4/0x3b8 __arm64_sys_sendmmsg+0x34/0x48 invoke_syscall+0x64/0x160 el0_svc_common.constprop.4+0x124/0x300 do_el0_svc+0x44/0xc8 el0_svc+0x3c/0x1e8 el0t_64_sync_handler+0x88/0xb0 el0t_64_sync+0x16c/0x170 Changes since v1: -Cambiar el tipo de la variable [length] a unsigned, como sugirió Eric Dumazet. Cambios desde v2: -No cambiar el tipo de exthdrlen en ip6_make_skb, como sugirió Paolo Abeni. Cambios desde v3: -No cambiar el tipo de ulen en udpv6_sendmsg y l2tp_ip6_sendmsg, como sugirió Jakub Kicinski."
}
],
"lastModified": "2026-06-17T05:18:59.157",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2D54A7D5-1B43-4A68-BEEB-808744204DED",
"versionEndExcluding": "5.18.6"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*",
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"matchCriteriaId": "A8C30C2D-F82D-4D37-AB48-D76ABFBD5377"
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}