cve-2022-49911
Vulnerability from cvelistv5
Published
2025-05-01 14:10
Modified
2025-05-04 08:48
Severity ?
EPSS score ?
Summary
netfilter: ipset: enforce documented limit to prevent allocating huge memory
References
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/netfilter/ipset/ip_set_hash_gen.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "42d20d5e24575c9afa2d66d9a51e7386db9514f5",
"status": "affected",
"version": "ccf0a4b7fc688561428290265e4effde41446668",
"versionType": "git"
},
{
"lessThan": "a37ef32fe5956fe9248df68f6a61997845ba047e",
"status": "affected",
"version": "ccf0a4b7fc688561428290265e4effde41446668",
"versionType": "git"
},
{
"lessThan": "510841da1fcc16f702440ab58ef0b4d82a9056b7",
"status": "affected",
"version": "ccf0a4b7fc688561428290265e4effde41446668",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/netfilter/ipset/ip_set_hash_gen.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.11"
},
{
"lessThan": "5.11",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.78",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.0.*",
"status": "unaffected",
"version": "6.0.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.78",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.0.8",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1",
"versionStartIncluding": "5.11",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: enforce documented limit to prevent allocating huge memory\n\nDaniel Xu reported that the hash:net,iface type of the ipset subsystem does\nnot limit adding the same network with different interfaces to a set, which\ncan lead to huge memory usage or allocation failure.\n\nThe quick reproducer is\n\n$ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0\n$ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; done\n\nThe backtrace when vmalloc fails:\n\n [Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages\n \u003c...\u003e\n [Tue Oct 25 00:13:08 2022] Call Trace:\n [Tue Oct 25 00:13:08 2022] \u003cTASK\u003e\n [Tue Oct 25 00:13:08 2022] dump_stack_lvl+0x48/0x60\n [Tue Oct 25 00:13:08 2022] warn_alloc+0x155/0x180\n [Tue Oct 25 00:13:08 2022] __vmalloc_node_range+0x72a/0x760\n [Tue Oct 25 00:13:08 2022] ? hash_netiface4_add+0x7c0/0xb20\n [Tue Oct 25 00:13:08 2022] ? __kmalloc_large_node+0x4a/0x90\n [Tue Oct 25 00:13:08 2022] kvmalloc_node+0xa6/0xd0\n [Tue Oct 25 00:13:08 2022] ? hash_netiface4_resize+0x99/0x710\n \u003c...\u003e\n\nThe fix is to enforce the limit documented in the ipset(8) manpage:\n\n\u003e The internal restriction of the hash:net,iface set type is that the same\n\u003e network prefix cannot be stored with more than 64 different interfaces\n\u003e in a single set."
}
],
"providerMetadata": {
"dateUpdated": "2025-05-04T08:48:30.888Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/42d20d5e24575c9afa2d66d9a51e7386db9514f5"
},
{
"url": "https://git.kernel.org/stable/c/a37ef32fe5956fe9248df68f6a61997845ba047e"
},
{
"url": "https://git.kernel.org/stable/c/510841da1fcc16f702440ab58ef0b4d82a9056b7"
}
],
"title": "netfilter: ipset: enforce documented limit to prevent allocating huge memory",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2022-49911",
"datePublished": "2025-05-01T14:10:53.631Z",
"dateReserved": "2025-05-01T14:05:17.248Z",
"dateUpdated": "2025-05-04T08:48:30.888Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2022-49911\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:16.260\",\"lastModified\":\"2025-05-02T13:52:51.693\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: ipset: enforce documented limit to prevent allocating huge memory\\n\\nDaniel Xu reported that the hash:net,iface type of the ipset subsystem does\\nnot limit adding the same network with different interfaces to a set, which\\ncan lead to huge memory usage or allocation failure.\\n\\nThe quick reproducer is\\n\\n$ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0\\n$ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; done\\n\\nThe backtrace when vmalloc fails:\\n\\n [Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages\\n \u003c...\u003e\\n [Tue Oct 25 00:13:08 2022] Call Trace:\\n [Tue Oct 25 00:13:08 2022] \u003cTASK\u003e\\n [Tue Oct 25 00:13:08 2022] dump_stack_lvl+0x48/0x60\\n [Tue Oct 25 00:13:08 2022] warn_alloc+0x155/0x180\\n [Tue Oct 25 00:13:08 2022] __vmalloc_node_range+0x72a/0x760\\n [Tue Oct 25 00:13:08 2022] ? hash_netiface4_add+0x7c0/0xb20\\n [Tue Oct 25 00:13:08 2022] ? __kmalloc_large_node+0x4a/0x90\\n [Tue Oct 25 00:13:08 2022] kvmalloc_node+0xa6/0xd0\\n [Tue Oct 25 00:13:08 2022] ? hash_netiface4_resize+0x99/0x710\\n \u003c...\u003e\\n\\nThe fix is to enforce the limit documented in the ipset(8) manpage:\\n\\n\u003e The internal restriction of the hash:net,iface set type is that the same\\n\u003e network prefix cannot be stored with more than 64 different interfaces\\n\u003e in a single set.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: ipset: aplicar el l\u00edmite documentado para evitar la asignaci\u00f3n de grandes cantidades de memoria. Daniel Xu inform\u00f3 que el tipo hash:net,iface del subsistema ipset no limita la adici\u00f3n de la misma red con diferentes interfaces a un conjunto, lo que puede provocar un uso excesivo de memoria o fallos de asignaci\u00f3n. El reproductor r\u00e1pido es: $ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0 $ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; hecho El backtrace cuando vmalloc falla: [Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages \u0026lt;...\u0026gt; [Tue Oct 25 00:13:08 2022] Call Trace: [Tue Oct 25 00:13:08 2022] [Tue Oct 25 00:13:08 2022] dump_stack_lvl+0x48/0x60 [Tue Oct 25 00:13:08 2022] warn_alloc+0x155/0x180 [Tue Oct 25 00:13:08 2022] __vmalloc_node_range+0x72a/0x760 [Tue Oct 25 00:13:08 2022] ? hash_netiface4_add+0x7c0/0xb20 [Tue Oct 25 00:13:08 2022] ? __kmalloc_large_node+0x4a/0x90 [Tue Oct 25 00:13:08 2022] kvmalloc_node+0xa6/0xd0 [Tue Oct 25 00:13:08 2022] ? hash_netiface4_resize+0x99/0x710 \u0026lt;...\u0026gt; La soluci\u00f3n es aplicar el l\u00edmite documentado en la p\u00e1gina de manual de ipset(8): \u0026gt; La restricci\u00f3n interna del tipo de conjunto hash:net,iface es que el mismo prefijo de red no se puede almacenar con m\u00e1s de 64 interfaces diferentes en un solo conjunto.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/42d20d5e24575c9afa2d66d9a51e7386db9514f5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/510841da1fcc16f702440ab58ef0b4d82a9056b7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a37ef32fe5956fe9248df68f6a61997845ba047e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.