CVE-2026-64411 (GCVE-0-2026-64411)
Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-07-27 05:00
VLAI
EPSS
VEX
Title
netfilter: ebtables: terminate table name before find_table_lock()
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ebtables: terminate table name before find_table_lock()
update_counters() and compat_update_counters() forward a user-supplied
32-byte table name to find_table_lock() without NUL-terminating it. On a
lookup miss, find_inlist_lock() calls try_then_request_module(..., "%s%s",
"ebtable_", name), and vsnprintf() reads past the name field and the
stack object until it hits a zero byte.
BUG: KASAN: stack-out-of-bounds in string (lib/vsprintf.c:648 lib/vsprintf.c:730)
Read of size 1 at addr ffff8880119dfb20 by task exploit/147
Call Trace:
...
string (lib/vsprintf.c:648 lib/vsprintf.c:730)
vsnprintf (lib/vsprintf.c:2945)
__request_module (kernel/module/kmod.c:150)
do_update_counters.isra.0 (net/bridge/netfilter/ebtables.c:371 net/bridge/netfilter/ebtables.c:380)
update_counters (net/bridge/netfilter/ebtables.c:1440)
do_ebt_set_ctl (net/bridge/netfilter/ebtables.c:2573)
nf_setsockopt (net/netfilter/nf_sockopt.c:101)
ip_setsockopt (net/ipv4/ip_sockglue.c:1424)
raw_setsockopt (net/ipv4/raw.c:847)
__sys_setsockopt (net/socket.c:2393)
...
compat_do_replace() shares the same unterminated name via
compat_copy_ebt_replace_from_user(); terminate it there too so all
find_table_lock() callers behave alike. The other callers already
terminate the name after the copy.
Severity
7.1 (High)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4c046ca4e35a83ea32f6e748f54139f5fe2a1d01
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ab63ccefb9c71627f957a0724c2b9ebc869c6f20 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c6f539311e58e76aa96feef0f1572b13a564f8a2 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2664f537ca5bcb2ef3fac2683dcca602e51fad24 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7436da6c1bc44654b7f11a17e746f6999fd37250 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6fe8d3cecd20bfaaaf440db3a06ba674d2f2e322 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b6183b1b88a722b6d8ea0cecc99eba168a15e0be (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a622d2e9608c9dff47fc2e5759ac7aa3a836b45d (git) |
|
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc3 , ≤ * (original_commit_for_fix) |
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{
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},
{
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"version": "6.1.178",
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{
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"version": "6.12.96",
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{
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{
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"version": "7.1.4",
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},
{
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
}
]
}
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},
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{
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"vulnerable": true
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{
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}
],
"negate": false,
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ebtables: terminate table name before find_table_lock()\n\nupdate_counters() and compat_update_counters() forward a user-supplied\n32-byte table name to find_table_lock() without NUL-terminating it. On a\nlookup miss, find_inlist_lock() calls try_then_request_module(..., \"%s%s\",\n\"ebtable_\", name), and vsnprintf() reads past the name field and the\nstack object until it hits a zero byte.\n\n BUG: KASAN: stack-out-of-bounds in string (lib/vsprintf.c:648 lib/vsprintf.c:730)\n Read of size 1 at addr ffff8880119dfb20 by task exploit/147\n Call Trace:\n ...\n string (lib/vsprintf.c:648 lib/vsprintf.c:730)\n vsnprintf (lib/vsprintf.c:2945)\n __request_module (kernel/module/kmod.c:150)\n do_update_counters.isra.0 (net/bridge/netfilter/ebtables.c:371 net/bridge/netfilter/ebtables.c:380)\n update_counters (net/bridge/netfilter/ebtables.c:1440)\n do_ebt_set_ctl (net/bridge/netfilter/ebtables.c:2573)\n nf_setsockopt (net/netfilter/nf_sockopt.c:101)\n ip_setsockopt (net/ipv4/ip_sockglue.c:1424)\n raw_setsockopt (net/ipv4/raw.c:847)\n __sys_setsockopt (net/socket.c:2393)\n ...\n\ncompat_do_replace() shares the same unterminated name via\ncompat_copy_ebt_replace_from_user(); terminate it there too so all\nfind_table_lock() callers behave alike. The other callers already\nterminate the name after the copy."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-27T05:00:41.895Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
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"url": "https://git.kernel.org/stable/c/4c046ca4e35a83ea32f6e748f54139f5fe2a1d01"
},
{
"url": "https://git.kernel.org/stable/c/ab63ccefb9c71627f957a0724c2b9ebc869c6f20"
},
{
"url": "https://git.kernel.org/stable/c/c6f539311e58e76aa96feef0f1572b13a564f8a2"
},
{
"url": "https://git.kernel.org/stable/c/2664f537ca5bcb2ef3fac2683dcca602e51fad24"
},
{
"url": "https://git.kernel.org/stable/c/7436da6c1bc44654b7f11a17e746f6999fd37250"
},
{
"url": "https://git.kernel.org/stable/c/6fe8d3cecd20bfaaaf440db3a06ba674d2f2e322"
},
{
"url": "https://git.kernel.org/stable/c/b6183b1b88a722b6d8ea0cecc99eba168a15e0be"
},
{
"url": "https://git.kernel.org/stable/c/a622d2e9608c9dff47fc2e5759ac7aa3a836b45d"
}
],
"title": "netfilter: ebtables: terminate table name before find_table_lock()",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64411",
"datePublished": "2026-07-25T08:50:52.143Z",
"dateReserved": "2026-07-19T15:36:31.786Z",
"dateUpdated": "2026-07-27T05:00:41.895Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-64411",
"date": "2026-07-26",
"epss": "0.00177",
"percentile": "0.07463"
},
"microsoft_vex": {
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"cve": "CVE-2026-64411",
"id": "msrc_CVE-2026-64411",
"initial_release_date": "2026-07-26T01:06:18.000Z",
"product_status:under_investigation": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "netfilter: ebtables: terminate table name before find_table_lock()",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64411.json",
"version": "1"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-64411\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-25T10:17:24.853\",\"lastModified\":\"2026-07-27T05:16:48.123\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: ebtables: terminate table name before find_table_lock()\\n\\nupdate_counters() and compat_update_counters() forward a user-supplied\\n32-byte table name to find_table_lock() without NUL-terminating it. On a\\nlookup miss, find_inlist_lock() calls try_then_request_module(..., \\\"%s%s\\\",\\n\\\"ebtable_\\\", name), and vsnprintf() reads past the name field and the\\nstack object until it hits a zero byte.\\n\\n BUG: KASAN: stack-out-of-bounds in string (lib/vsprintf.c:648 lib/vsprintf.c:730)\\n Read of size 1 at addr ffff8880119dfb20 by task exploit/147\\n Call Trace:\\n ...\\n string (lib/vsprintf.c:648 lib/vsprintf.c:730)\\n vsnprintf (lib/vsprintf.c:2945)\\n __request_module (kernel/module/kmod.c:150)\\n do_update_counters.isra.0 (net/bridge/netfilter/ebtables.c:371 net/bridge/netfilter/ebtables.c:380)\\n update_counters (net/bridge/netfilter/ebtables.c:1440)\\n do_ebt_set_ctl (net/bridge/netfilter/ebtables.c:2573)\\n nf_setsockopt (net/netfilter/nf_sockopt.c:101)\\n ip_setsockopt (net/ipv4/ip_sockglue.c:1424)\\n raw_setsockopt (net/ipv4/raw.c:847)\\n __sys_setsockopt (net/socket.c:2393)\\n ...\\n\\ncompat_do_replace() shares the same unterminated name via\\ncompat_copy_ebt_replace_from_user(); terminate it there too so all\\nfind_table_lock() callers behave alike. The other callers already\\nterminate the name after the copy.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/bridge/netfilter/ebtables.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"4c046ca4e35a83ea32f6e748f54139f5fe2a1d01\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"ab63ccefb9c71627f957a0724c2b9ebc869c6f20\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"c6f539311e58e76aa96feef0f1572b13a564f8a2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"2664f537ca5bcb2ef3fac2683dcca602e51fad24\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"7436da6c1bc44654b7f11a17e746f6999fd37250\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"6fe8d3cecd20bfaaaf440db3a06ba674d2f2e322\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"b6183b1b88a722b6d8ea0cecc99eba168a15e0be\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"a622d2e9608c9dff47fc2e5759ac7aa3a836b45d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/bridge/netfilter/ebtables.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2664f537ca5bcb2ef3fac2683dcca602e51fad24\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4c046ca4e35a83ea32f6e748f54139f5fe2a1d01\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6fe8d3cecd20bfaaaf440db3a06ba674d2f2e322\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7436da6c1bc44654b7f11a17e746f6999fd37250\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a622d2e9608c9dff47fc2e5759ac7aa3a836b45d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ab63ccefb9c71627f957a0724c2b9ebc869c6f20\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b6183b1b88a722b6d8ea0cecc99eba168a15e0be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c6f539311e58e76aa96feef0f1572b13a564f8a2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
"suse_vex": {
"aggregate_severity": "not set",
"current_release_date": "2026-07-25T15:59:51Z",
"cve": "CVE-2026-64411",
"id": "CVE-2026-64411",
"initial_release_date": "2026-07-25T15:59:51Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-64411",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64411.json",
"version": "2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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