172 lines
9.1 KiB
JSON
172 lines
9.1 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-2024-46799",
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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": "2024-09-11T15:12:18.280Z",
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"datePublished": "2024-09-18T07:12:53.508Z",
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"dateUpdated": "2026-08-05T11:38:38.529Z"
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},
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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": "2026-08-05T11:38:38.529Z"
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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\nnet: ethernet: ti: am65-cpsw: Fix NULL dereference on XDP_TX\n\nIf number of TX queues are set to 1 we get a NULL pointer\ndereference during XDP_TX.\n\n~# ethtool -L eth0 tx 1\n~# ./xdp-trafficgen udp -A <ipv6-src> -a <ipv6-dst> eth0 -t 2\nTransmitting on eth0 (ifindex 2)\n[ 241.135257] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030\n\nFix this by using actual TX queues instead of max TX queues\nwhen picking the TX channel in am65_cpsw_ndo_xdp_xmit()."
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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:N/I:N/A:H",
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"baseScore": 7.5,
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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:N - The vulnerable function is the XDP_REDIRECT egress hook, invoked from `bq_xmit_all()` while processing received network frames, so a remote sender's packet drives the code path on an XDP-forwarding TI CPSW gateway. No local access to the target is required to deliver the triggering frame.\nAC:L - Given the vulnerable configuration (TX channels reduced below CPU count with an XDP redirect program attached), every redirected frame handled on a CPU index at or above `tx_ch_num` faults deterministically, and with one TX channel that is most CPUs on a 4- or 8-core SoC. The attacker can further steer which RX CPU handles the flow by varying source ports, so no condition outside their control must align.\nPR:N - Triggering only requires sending a frame that the already-loaded XDP program redirects out the CPSW port; no credentials or account on the target are needed. The privileged steps (`ethtool -L`, XDP attach) are the administrator's configuration, not part of the attack.\nUI:N - The crash occurs autonomously in softirq/NAPI context as soon as a redirected frame is processed. No victim action is required.\nS:U - The fault is confined to the kernel of the affected host; no VM, IOMMU, or sandbox boundary is crossed. Impact stays within the same security authority.\nC:N - The index stays inside the fixed 8-element `tx_chns[]` array, so there is no out-of-bounds read, and the dereference is of a NULL `desc_pool` at a small fixed offset. No kernel memory contents are read or disclosed.\nI:N - No out-of-bounds or use-after-free write occurs; the faulting address is in the unmappable low page (blocked by `mmap_min_addr` and arm64 PAN), so no write or control-flow primitive is available. Nothing is modified before the oops.\nA:H - The NULL dereference produces a kernel oops in softirq/NAPI context, killing the network datapath and typically panicking the system on embedded configurations with `panic_on_oops`. It repeats on every redirected packet, so the denial of service is total and sustained."
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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/net/ethernet/ti/am65-cpsw-nuss.c"
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],
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"versions": [
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{
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"version": "8acacc40f7337527ff84cd901ed2ef0a2b95b2b6",
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"lessThan": "2e7189d2b1de51fc2567676cd4f96c0fe0960b9f",
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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": "8acacc40f7337527ff84cd901ed2ef0a2b95b2b6",
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"lessThan": "0a50c35277f96481a5a6ed5faf347f282040c57d",
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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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"drivers/net/ethernet/ti/am65-cpsw-nuss.c"
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],
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"versions": [
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{
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"version": "6.10",
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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": "6.10",
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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": "6.10.10",
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"lessThanOrEqual": "6.10.*",
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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": "6.11",
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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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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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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": "6.10",
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"versionEndExcluding": "6.10.10"
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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": "6.10",
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"versionEndExcluding": "6.11"
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}
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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/2e7189d2b1de51fc2567676cd4f96c0fe0960b9f"
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},
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{
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"url": "https://git.kernel.org/stable/c/0a50c35277f96481a5a6ed5faf347f282040c57d"
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}
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],
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"title": "net: ethernet: ti: am65-cpsw: Fix NULL dereference on XDP_TX",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-09-29T14:21:59.771097Z",
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"id": "CVE-2024-46799",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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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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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-29T14:22:10.684Z"
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}
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}
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]
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}
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} |