CVE-2022-49911

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-49911", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-01T14:05:17.248Z", "datePublished": "2025-05-01T14:10:53.631Z", "dateUpdated": "2026-05-11T19:09:05.818Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:09:05.818Z"}, "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 <...>\n [Tue Oct 25 00:13:08 2022] Call Trace:\n [Tue Oct 25 00:13:08 2022] <TASK>\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 <...>\n\nThe fix is to enforce the limit documented in the ipset(8) manpage:\n\n> The internal restriction of the hash:net,iface set type is that the same\n> network prefix cannot be stored with more than 64 different interfaces\n> in a single set."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/ipset/ip_set_hash_gen.h"], "versions": [{"version": "ccf0a4b7fc688561428290265e4effde41446668", "lessThan": "42d20d5e24575c9afa2d66d9a51e7386db9514f5", "status": "affected", "versionType": "git"}, {"version": "ccf0a4b7fc688561428290265e4effde41446668", "lessThan": "a37ef32fe5956fe9248df68f6a61997845ba047e", "status": "affected", "versionType": "git"}, {"version": "ccf0a4b7fc688561428290265e4effde41446668", "lessThan": "510841da1fcc16f702440ab58ef0b4d82a9056b7", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/ipset/ip_set_hash_gen.h"], "versions": [{"version": "5.11", "status": "affected"}, {"version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.78", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.8", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.15.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.0.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.1"}]}]}], "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"}}}}

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{"affected": [{"affectedData": [{"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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AB8B27B9-B41B-42D5-AE67-0A89A8A8EEB1", "versionEndExcluding": "5.15.78", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "EC9A754E-625D-42F3-87A7-960D643E2867", "versionEndExcluding": "6.0.8", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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 <...>\n [Tue Oct 25 00:13:08 2022] Call Trace:\n [Tue Oct 25 00:13:08 2022] <TASK>\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 <...>\n\nThe fix is to enforce the limit documented in the ipset(8) manpage:\n\n> The internal restriction of the hash:net,iface set type is that the same\n> network prefix cannot be stored with more than 64 different interfaces\n> 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 &lt;...&gt; [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 &lt;...&gt; La soluci\u00f3n es aplicar el l\u00edmite documentado en la p\u00e1gina de manual de ipset(8): &gt; 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."}], "id": "CVE-2022-49911", "lastModified": "2026-06-17T05:19:29.653", "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": "2025-05-01T15:16:16.260", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/42d20d5e24575c9afa2d66d9a51e7386db9514f5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/510841da1fcc16f702440ab58ef0b4d82a9056b7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a37ef32fe5956fe9248df68f6a61997845ba047e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2023:2458", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:2458", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}], "bugzilla": {"description": "kernel: netfilter: ipset: enforce documented limit to prevent allocating huge memory", "id": "2363421", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363421"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: ipset: enforce documented limit to prevent allocating huge memory\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.\nThe quick reproducer is\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\nThe backtrace when vmalloc fails:\n[Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages\n<...>\n[Tue Oct 25 00:13:08 2022] Call Trace:\n[Tue Oct 25 00:13:08 2022] <TASK>\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<...>\nThe fix is to enforce the limit documented in the ipset(8) manpage:\n> The internal restriction of the hash:net,iface set type is that the same\n> network prefix cannot be stored with more than 64 different interfaces\n> in a single set."], "name": "CVE-2022-49911", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49911\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49911\nhttps://lore.kernel.org/linux-cve-announce/2025050105-CVE-2022-49911-2e28@gregkh/T"], "threat_severity": "Moderate"}

{}