138 lines
7.8 KiB
JSON
138 lines
7.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-22110",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-12-29T08:45:45.820Z",
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"datePublished": "2025-04-16T14:12:57.061Z",
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"dateUpdated": "2026-08-05T11:56:50.656Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:56:50.656Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error\n\nIt is possible that ctx in nfqnl_build_packet_message() could be used\nbefore it is properly initialize, which is only initialized\nby nfqnl_get_sk_secctx().\n\nThis patch corrects this problem by initializing the lsmctx to a safe\nvalue when it is declared.\n\nThis is similar to the commit 35fcac7a7c25\n(\"audit: Initialize lsmctx to avoid memory allocation error\")."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:N - The uninitialized `lsm_context` is consumed in `nfqnl_build_packet_message()`, which runs in the softirq packet-receive path for every packet hitting an NFQUEUE verdict (`nf_hook_slow` → `nf_queue` → `nfqnl_enqueue_packet`). On an internet-facing host running an inline NFQUEUE-based IPS (Suricata/Snort IPS mode), remote packets alone drive the vulnerable code.\nAC:L - The uninitialized-memory use is unconditional and deterministic — it fires on every queued packet with no crafting required — and the attacker can repeat it millions of times while shaping the underlying stack through the preceding IP/conntrack/netfilter processing of their own packets.\nPR:N - In the inline-IPS deployment the remote attacker needs no credentials whatsoever; merely sending traffic to the host executes the vulnerable code. Even in the purely local model, the `NFQUEUE` rule and nfnetlink queue socket are gated only by `netlink_net_capable(CAP_NET_ADMIN)`/`ns_capable()`, which any unprivileged user obtains via `unshare -Urn`.\nUI:N - No victim action is required — the flaw triggers automatically during kernel packet processing as soon as traffic traverses the NFQUEUE rule.\nS:U - The invalid free and resulting slab corruption occur entirely within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Uninitialized stack memory is interpreted as a pointer and length, and the resulting wild `kfree()` yields slab corruption that can be groomed into an arbitrary-read primitive, so treat as high per use-after-free/uninitialized-memory guidance.\nI:H - `selinux_release_secctx()`/`apparmor_release_secctx()` call `kfree()` on an attacker-influenceable stale stack value, giving an arbitrary-free primitive that corrupts the slab allocator and is a well-established route to arbitrary write and control-flow hijack.\nA:H - Freeing a bogus pointer triggers slab metadata corruption, `BUG_ON`/oops, or panic, and the path is reached on every queued packet so it can be driven repeatedly until the kernel dies."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/netfilter/nfnetlink_queue.c"
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],
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"versions": [
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{
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"version": "2d470c778120d3cdb8d8ab250329ca85f49f12b1",
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"lessThan": "ddbf7e1d82a1d0c1d3425931a6cb1b83f8454759",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2d470c778120d3cdb8d8ab250329ca85f49f12b1",
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"lessThan": "778b09d91baafb13408470c721d034d6515cfa5a",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/netfilter/nfnetlink_queue.c"
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],
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"versions": [
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{
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"version": "6.14",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.14",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.14.2",
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"lessThanOrEqual": "6.14.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.15",
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"lessThanOrEqual": "*",
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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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}
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],
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"cpeApplicability": [
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"versionStartIncluding": "6.14",
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"versionEndExcluding": "6.14.2"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.14",
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}
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/ddbf7e1d82a1d0c1d3425931a6cb1b83f8454759"
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},
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{
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"url": "https://git.kernel.org/stable/c/778b09d91baafb13408470c721d034d6515cfa5a"
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}
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],
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"title": "netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error",
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