CVE-2024-53212
Vulnerability from cvelistv5
Published
2024-12-27 13:49
Modified
2024-12-27 13:49
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
netlink: fix false positive warning in extack during dumps
Commit under fixes extended extack reporting to dumps.
It works under normal conditions, because extack errors are
usually reported during ->start() or the first ->dump(),
it's quite rare that the dump starts okay but fails later.
If the dump does fail later, however, the input skb will
already have the initiating message pulled, so checking
if bad attr falls within skb->data will fail.
Switch the check to using nlh, which is always valid.
syzbot found a way to hit that scenario by filling up
the receive queue. In this case we initiate a dump
but don't call ->dump() until there is read space for
an skb.
WARNING: CPU: 1 PID: 5845 at net/netlink/af_netlink.c:2210 netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209
RIP: 0010:netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209
Call Trace:
<TASK>
netlink_dump_done+0x513/0x970 net/netlink/af_netlink.c:2250
netlink_dump+0x91f/0xe10 net/netlink/af_netlink.c:2351
netlink_recvmsg+0x6bb/0x11d0 net/netlink/af_netlink.c:1983
sock_recvmsg_nosec net/socket.c:1051 [inline]
sock_recvmsg+0x22f/0x280 net/socket.c:1073
__sys_recvfrom+0x246/0x3d0 net/socket.c:2267
__do_sys_recvfrom net/socket.c:2285 [inline]
__se_sys_recvfrom net/socket.c:2281 [inline]
__x64_sys_recvfrom+0xde/0x100 net/socket.c:2281
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff37dd17a79
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/netlink/af_netlink.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "6406d0ce0414b807af5d2a4b781c3f3ee52b8a4d",
"status": "affected",
"version": "8af4f60472fce1f22db5068107b37bcc1a65eabd",
"versionType": "git"
},
{
"lessThan": "28af028a71371df5fcbf807fd4444bba8d0c33cc",
"status": "affected",
"version": "8af4f60472fce1f22db5068107b37bcc1a65eabd",
"versionType": "git"
},
{
"lessThan": "3bf39fa849ab8ed52abb6715922e6102d3df9f97",
"status": "affected",
"version": "8af4f60472fce1f22db5068107b37bcc1a65eabd",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/netlink/af_netlink.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.10"
},
{
"lessThan": "6.10",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.11.*",
"status": "unaffected",
"version": "6.11.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.13-rc1",
"versionType": "original_commit_for_fix"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: fix false positive warning in extack during dumps\n\nCommit under fixes extended extack reporting to dumps.\nIt works under normal conditions, because extack errors are\nusually reported during -\u003estart() or the first -\u003edump(),\nit\u0027s quite rare that the dump starts okay but fails later.\nIf the dump does fail later, however, the input skb will\nalready have the initiating message pulled, so checking\nif bad attr falls within skb-\u003edata will fail.\n\nSwitch the check to using nlh, which is always valid.\n\nsyzbot found a way to hit that scenario by filling up\nthe receive queue. In this case we initiate a dump\nbut don\u0027t call -\u003edump() until there is read space for\nan skb.\n\nWARNING: CPU: 1 PID: 5845 at net/netlink/af_netlink.c:2210 netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209\nRIP: 0010:netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209\nCall Trace:\n \u003cTASK\u003e\n netlink_dump_done+0x513/0x970 net/netlink/af_netlink.c:2250\n netlink_dump+0x91f/0xe10 net/netlink/af_netlink.c:2351\n netlink_recvmsg+0x6bb/0x11d0 net/netlink/af_netlink.c:1983\n sock_recvmsg_nosec net/socket.c:1051 [inline]\n sock_recvmsg+0x22f/0x280 net/socket.c:1073\n __sys_recvfrom+0x246/0x3d0 net/socket.c:2267\n __do_sys_recvfrom net/socket.c:2285 [inline]\n __se_sys_recvfrom net/socket.c:2281 [inline]\n __x64_sys_recvfrom+0xde/0x100 net/socket.c:2281\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n RIP: 0033:0x7ff37dd17a79"
}
],
"providerMetadata": {
"dateUpdated": "2024-12-27T13:49:57.904Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/6406d0ce0414b807af5d2a4b781c3f3ee52b8a4d"
},
{
"url": "https://git.kernel.org/stable/c/28af028a71371df5fcbf807fd4444bba8d0c33cc"
},
{
"url": "https://git.kernel.org/stable/c/3bf39fa849ab8ed52abb6715922e6102d3df9f97"
}
],
"title": "netlink: fix false positive warning in extack during dumps",
"x_generator": {
"engine": "bippy-5f407fcff5a0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-53212",
"datePublished": "2024-12-27T13:49:57.904Z",
"dateReserved": "2024-11-19T17:17:25.021Z",
"dateUpdated": "2024-12-27T13:49:57.904Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2024-53212\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T14:15:29.130\",\"lastModified\":\"2024-12-27T14:15:29.130\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetlink: fix false positive warning in extack during dumps\\n\\nCommit under fixes extended extack reporting to dumps.\\nIt works under normal conditions, because extack errors are\\nusually reported during -\u003estart() or the first -\u003edump(),\\nit\u0027s quite rare that the dump starts okay but fails later.\\nIf the dump does fail later, however, the input skb will\\nalready have the initiating message pulled, so checking\\nif bad attr falls within skb-\u003edata will fail.\\n\\nSwitch the check to using nlh, which is always valid.\\n\\nsyzbot found a way to hit that scenario by filling up\\nthe receive queue. In this case we initiate a dump\\nbut don\u0027t call -\u003edump() until there is read space for\\nan skb.\\n\\nWARNING: CPU: 1 PID: 5845 at net/netlink/af_netlink.c:2210 netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209\\nRIP: 0010:netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209\\nCall Trace:\\n \u003cTASK\u003e\\n netlink_dump_done+0x513/0x970 net/netlink/af_netlink.c:2250\\n netlink_dump+0x91f/0xe10 net/netlink/af_netlink.c:2351\\n netlink_recvmsg+0x6bb/0x11d0 net/netlink/af_netlink.c:1983\\n sock_recvmsg_nosec net/socket.c:1051 [inline]\\n sock_recvmsg+0x22f/0x280 net/socket.c:1073\\n __sys_recvfrom+0x246/0x3d0 net/socket.c:2267\\n __do_sys_recvfrom net/socket.c:2285 [inline]\\n __se_sys_recvfrom net/socket.c:2281 [inline]\\n __x64_sys_recvfrom+0xde/0x100 net/socket.c:2281\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n RIP: 0033:0x7ff37dd17a79\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/28af028a71371df5fcbf807fd4444bba8d0c33cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3bf39fa849ab8ed52abb6715922e6102d3df9f97\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6406d0ce0414b807af5d2a4b781c3f3ee52b8a4d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.