242 lines
12 KiB
JSON
242 lines
12 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-2023-53432",
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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": "2025-09-17T14:54:09.745Z",
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"datePublished": "2025-09-18T16:04:12.446Z",
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"dateUpdated": "2026-08-05T09:14:07.109Z"
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},
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"containers": {
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"cna": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T09:14:07.109Z"
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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\nfirewire: net: fix use after free in fwnet_finish_incoming_packet()\n\nThe netif_rx() function frees the skb so we can't dereference it to\nsave the skb->len."
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"baseScore": 8.8,
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"baseSeverity": "HIGH"
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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:A - The vulnerable path processes IP-over-1394 packets (RFC 2734/3146) from another node on the shared IEEE 1394 bus via fwnet_receive_packet/fwnet_receive_broadcast → fwnet_incoming_packet → fwnet_finish_incoming_packet, matching this CNA’s Adjacent shared-physical-segment model for FireWire (CVE-2024-50113).\nAC:L - An attacker-controlled FireWire peer can reliably send unfragmented or reassembled datagrams that reach netif_rx() on the success path; the subsequent skb->len use-after-free does not depend on conditions the attacker cannot influence, and UAF bugs are scored AC:L unless a truly uncontrollable race is required.\nPR:N - fwnet_receive_packet accepts TCODE_WRITE_BLOCK_REQUEST payloads from any bus peer with no capability check, credentials, or authentication, and fwnet_receive_broadcast likewise processes GASP packets automatically from the ISO context.\nUI:N - Packet receive and finishing run entirely in FireWire/IRQ softirq context once the firewire-net interface is up; the attacker’s own node supplies the frames and no victim user action (open/mount/click) is required.\nS:U - The use-after-free is confined to kernel sk_buff heap objects under the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Use-after-free of an sk_buff after netif_rx() handoff allows the freed object to be reclaimed (e.g. via RPS on another CPU) and its contents disclosed through the dangling skb->len read, enabling arbitrary kernel memory read primitives per UAF guidance.\nI:H - sk_buff use-after-free in a general-purpose slab is a classic heap-grooming primitive that can yield attacker-controlled object reuse and control-flow hijacking, so integrity impact is High per UAF scoring guidance.\nA:H - Dereferencing a freed sk_buff can oops/panic the kernel, and an attacker on the bus can repeatedly inject packets to crash the machine at will."
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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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"drivers/firewire/net.c"
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],
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"status": "affected",
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{
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"programFiles": [
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"drivers/firewire/net.c"
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],
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"versions": [
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{
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"version": "2.6.31",
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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": "2.6.31",
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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": "5.15.128",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.47",
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"lessThanOrEqual": "6.1.*",
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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": "6.4.12",
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"lessThanOrEqual": "6.4.*",
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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": "6.5",
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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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"nodes": [
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"operator": "OR",
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"negate": false,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.31",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/2ea70379e4f4efa95c9daa7f3f9bdd4d40aec927"
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},
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{
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"url": "https://git.kernel.org/stable/c/3ff256751a2853e1ffaa36958ff933ccc98c6cb5"
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}
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],
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"title": "firewire: net: fix use after free in fwnet_finish_incoming_packet()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"confidentialityImpact": "HIGH"
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}
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},
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{
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"type": "ssvc",
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"content": {
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"id": "CVE-2023-53432",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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{
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"Automatable": "no"
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{
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"Technical Impact": "total"
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"version": "2.0.3",
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"timestamp": "2026-01-14T19:15:23.838324Z"
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"problemTypes": [
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-416",
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"description": "CWE-416 Use After Free"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"dateUpdated": "2026-01-14T19:23:09.629Z"
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}
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}
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} |