172 lines
9.0 KiB
JSON
172 lines
9.0 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2024-44945",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2024-08-21T05:34:56.665Z",
|
|
"datePublished": "2024-08-31T06:23:32.842Z",
|
|
"dateUpdated": "2026-08-05T11:37:12.719Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T11:37:12.719Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink: Initialise extack before use in ACKs\n\nAdd missing extack initialisation when ACKing BATCH_BEGIN and BATCH_END."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"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"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - The vulnerable code is reached only through a `NETLINK_NETFILTER` socket via `sendmsg()`, i.e. a local netlink/syscall interface. Per kernel scoring guidance netfilter/nfnetlink netlink paths are Local.\nAC:L - The attacker fully controls every precondition: it enables `NETLINK_EXT_ACK` on its own socket and sends a well-formed `BATCH_BEGIN|NLM_F_ACK` + `BATCH_END` batch, which deterministically reaches `nfnl_err_add()` with the uninitialized `extack` and delivers it. Stack contents at that frame offset can be groomed by preceding syscalls, so no condition lies outside the attacker's influence.\nPR:L - `nfnetlink_rcv()` requires `CAP_NET_ADMIN` only via `netlink_net_capable()`, which is evaluated against the netns owner's user namespace, so any unprivileged user obtains it with `unshare -Urn`. The nf_tables subsystem is module-autoloaded on demand from that namespace.\nUI:N - The attacker triggers the entire sequence from its own process with socket/sendmsg calls; no victim action or cooperation is involved.\nS:U - The uninitialized read and the resulting disclosure/crash occur entirely within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - `netlink_ack_tlv_fill()` does `nla_put_string(skb, NLMSGERR_ATTR_MSG, extack->_msg)` on an uninitialized pointer, copying kernel memory at an attacker-groomable address straight back to userspace, and the uninitialized `cookie_len` (up to 255 vs. a 20-byte array) additionally leaks ~130 bytes past the `nfnl_err` slab object. This is an attacker-directed kernel memory read primitive, defeating KASLR and exposing arbitrary kernel data.\nI:N - The defect is a pure use of uninitialized memory — every affected field is only read and serialized into a freshly allocated reply skb, whose `nla_put` calls are tailroom-checked. No kernel memory is written or corrupted, so no modification primitive arises.\nA:H - `strlen()` on the uninitialized `_msg` pointer dereferences a wild address, producing a page-fault oops, and the out-of-bounds `cookie_len` read triggers a KASAN slab-out-of-bounds report (panic with panic_on_warn/KASAN panic). The trigger is cheap and repeatable, so an unprivileged user can crash the kernel at will."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"net/netfilter/nfnetlink.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "bf2ac490d28c21a349e9eef81edc45320fca4a3c",
|
|
"lessThan": "3e03b536d9454c5802168b9e85248d456d3ff6a3",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "bf2ac490d28c21a349e9eef81edc45320fca4a3c",
|
|
"lessThan": "d1a7b382a9d3f0f3e5a80e0be2991c075fa4f618",
|
|
"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/nfnetlink.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.10",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.10",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.10.7",
|
|
"lessThanOrEqual": "6.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.11",
|
|
"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": "6.10",
|
|
"versionEndExcluding": "6.10.7"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.10",
|
|
"versionEndExcluding": "6.11"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/3e03b536d9454c5802168b9e85248d456d3ff6a3"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/d1a7b382a9d3f0f3e5a80e0be2991c075fa4f618"
|
|
}
|
|
],
|
|
"title": "netfilter: nfnetlink: Initialise extack before use in ACKs",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2024-44945",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2024-09-10T15:27:09.691209Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2024-09-12T17:33:04.018Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |