214 lines
11 KiB
JSON
214 lines
11 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-2025-38526",
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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": "2025-04-16T04:51:24.023Z",
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"datePublished": "2025-08-16T11:12:20.036Z",
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"dateUpdated": "2026-10-15T21:52:18.578Z"
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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": "2026-08-05T12:02:39.169Z"
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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\nice: add NULL check in eswitch lag check\n\nThe function ice_lag_is_switchdev_running() is being called from outside of\nthe LAG event handler code. This results in the lag->upper_netdev being\nNULL sometimes. To avoid a NULL-pointer dereference, there needs to be a\ncheck before it is dereferenced."
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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 sits directly in the ice per-packet TX datapath (`ice_xmit_frame_ring()`), so any inbound packet that elicits a kernel-generated reply — ARP, ICMP echo, TCP SYN-ACK/RST — drives the host into the NULL dereference from the network. ice is the 100G NIC used in internet-facing cloud and datacenter servers, so a remote unauthenticated peer can reach the faulting code.\nAC:L - Once the affected configuration is present (SRIOV-LAG-capable PF not enslaved in a bond, which is the default post-probe state), the dereference is deterministic on the very next transmit — no race to win, no memory layout to groom, no packet content requirements.\nPR:N - Reaching `ice_xmit_frame_ring()` requires no credentials at all: a remote peer needs only to send a packet the host answers, and locally any unprivileged process calling `sendto()` on the interface suffices. No capability, namespace, or authentication check exists anywhere on that path.\nUI:N - No victim action is needed; the crash occurs during ordinary packet transmission driven entirely by the attacker's traffic.\nS:U - The fault and its impact are both in the host kernel's own security authority — a standard kernel oops with no crossing of a VM, IOMMU, or sandbox boundary. The one VF-originated path (`virtchnl` promiscuous-mode) is gated behind trusted-VF status, so no guest-to-host boundary crossing is established.\nC:N - This is a read of `nd_net` at a small fixed offset from a NULL pointer; the faulting address is not attacker-influenced and the value is never returned to userspace or the wire, so no information is disclosed.\nI:N - No memory is written, no object is freed or reused, and no type confusion occurs — the bug is a pure read fault with no path to modifying kernel state.\nA:H - The NULL dereference occurs in the transmit/softirq path and produces a kernel oops or panic, taking down the networking datapath and typically the whole system, and it re-triggers on every subsequent transmit attempt."
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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/intel/ice/ice_lag.c"
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],
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"versions": [
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{
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"lessThan": "27591d926191e42b2332e4bad3bcd3a49def393b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"lessThan": "5a5d64f0eec82076b2c09fee2195d640cfbe3379",
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"status": "affected",
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"status": "affected",
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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/intel/ice/ice_lag.c"
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],
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"versions": [
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{
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"version": "6.6",
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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": "6.6",
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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": "6.6.100",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.40",
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"lessThanOrEqual": "6.12.*",
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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": "6.15.8",
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"lessThanOrEqual": "6.15.*",
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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": "6.16",
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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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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6",
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"versionEndExcluding": "6.6.100"
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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/27591d926191e42b2332e4bad3bcd3a49def393b"
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},
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{
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"url": "https://git.kernel.org/stable/c/5a5d64f0eec82076b2c09fee2195d640cfbe3379"
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},
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{
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"url": "https://git.kernel.org/stable/c/245917d3c5ed7c6ae720302b64eac5c6f0c85177"
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},
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{
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"url": "https://git.kernel.org/stable/c/3ce58b01ada408b372f15b7c992ed0519840e3cf"
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}
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],
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"title": "ice: add NULL check in eswitch lag check",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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"adp": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2025-38526",
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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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{
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"Automatable": "yes"
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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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"version": "2.0.3",
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"timestamp": "2026-10-15T21:51:23.742828Z"
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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": "2026-10-15T21:52:18.578Z"
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} |