298 lines
15 KiB
JSON
298 lines
15 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-2026-74548",
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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": "2026-08-15T05:44:03.915Z",
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"datePublished": "2026-08-15T12:27:56.387Z",
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"dateUpdated": "2026-10-16T19:05:55.094Z"
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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": "2026-08-19T16:38:39.684Z"
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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\nforcedeth: fix UAF of txrx_stats in nv_remove\n\nnv_remove() frees the per-CPU txrx_stats before unregister_netdev().\nUntil unregister completes, ndo_get_stats64, the NAPI/xmit data path,\nand nv_close()/drain may still access txrx_stats, leading to a\nuse-after-free.\n\nFree the stats only after unregister_netdev()."
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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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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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:L - The UAF is opened in nv_remove() during local PCI/driver teardown (sysfs unbind, module unload, or hot-unplug); although NAPI/xmit and stats readers can run concurrently on still-registered netdev traffic, there is no standalone remote path into nv_remove itself.\nAC:L - Once teardown starts, unregister_netdev() deterministically calls nv_close()→nv_drain_tx(), which increments freed txrx_stats when TX skbs remain, and an attacker can also drive the race by timing unbind against stats polling or packet I/O they control.\nPR:L - Privileged teardown opens the window, but unprivileged peers can supply the concurrent netdev access (rtnetlink/sysfs stats via nv_get_stats64, and RX/TX on the still-up interface) that performs the UAF; per CNA driver-removal UAF precedent and the higher-severity tiebreak, PR:L.\nUI:N - No separate victim action is required beyond routine driver removal or module unload on a live interface; monitoring daemons and network traffic can hit the freed stats automatically during the unregister window without user cooperation.\nS:U - Impact is kernel heap corruption and crash/privilege escalation within the host kernel security authority; it does not cross VM, hypervisor, IOMMU, or container sandbox boundaries.\nC:H - The bug is a kmalloc-backed per-CPU UAF: nv_get_stats64 reads freed nv_txrx_stats counters via per_cpu_ptr(), and once the slab is reallocated an attacker can obtain arbitrary kernel memory disclosure.\nI:H - Freed txrx_stats are updated from NAPI/xmit and nv_drain_tx() via __this_cpu_inc/add on attacker-influenced traffic, enabling heap grooming and controlled writes through the dangling per-CPU pointer for code execution.\nA:H - Use-after-free dereferences of txrx_stats during netdev teardown reliably cause kernel oops/panic (as in the fix description), and even unsuccessful exploitation still crashes the system when concurrent RX/TX or drain paths touch freed memory."
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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/nvidia/forcedeth.c"
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],
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"versions": [
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{
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"version": "f4b633b911fd3b4cbe1dc065e8fb064078d0889d",
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"lessThan": "cdf864d5d3c813ae1876f2bacc1cf3ac3c66dfc9",
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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": "f4b633b911fd3b4cbe1dc065e8fb064078d0889d",
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"lessThan": "7c22b4ee0bd003cecfc14ca28981cb213e201f70",
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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": "f4b633b911fd3b4cbe1dc065e8fb064078d0889d",
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"lessThan": "d51ce7a63b76eda02cabfed1b0cc277b2f5c9bcc",
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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": "f4b633b911fd3b4cbe1dc065e8fb064078d0889d",
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"lessThan": "cf2dcde2284562ff87830ca0b7fa2b06e95aef1e",
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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": "f4b633b911fd3b4cbe1dc065e8fb064078d0889d",
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"lessThan": "c9d24a205fd508b9999fcab6aca4c590490a12cf",
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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": "f4b633b911fd3b4cbe1dc065e8fb064078d0889d",
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"lessThan": "ae20a8a4de06a289d40b0a0633d8d573f1fcb049",
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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": "f4b633b911fd3b4cbe1dc065e8fb064078d0889d",
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"lessThan": "201e05aa531eba0dfe2ee05b4e178f6ffa12c8b1",
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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": "f4b633b911fd3b4cbe1dc065e8fb064078d0889d",
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"lessThan": "22666ba1420164753d7b0f5a841986b25ace5435",
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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/nvidia/forcedeth.c"
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],
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"versions": [
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{
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"version": "5.3",
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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": "5.3",
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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": "5.10.265",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.216",
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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": "6.1.183",
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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": "6.6.151",
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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": "6.12.103",
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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": "6.18.44",
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"lessThanOrEqual": "6.18.*",
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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": "7.1.8",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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": "5.3",
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"versionEndExcluding": "5.10.265"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/cdf864d5d3c813ae1876f2bacc1cf3ac3c66dfc9"
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},
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{
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"url": "https://git.kernel.org/stable/c/7c22b4ee0bd003cecfc14ca28981cb213e201f70"
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},
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{
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"url": "https://git.kernel.org/stable/c/d51ce7a63b76eda02cabfed1b0cc277b2f5c9bcc"
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},
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{
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"url": "https://git.kernel.org/stable/c/cf2dcde2284562ff87830ca0b7fa2b06e95aef1e"
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},
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{
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"url": "https://git.kernel.org/stable/c/c9d24a205fd508b9999fcab6aca4c590490a12cf"
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},
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{
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"url": "https://git.kernel.org/stable/c/ae20a8a4de06a289d40b0a0633d8d573f1fcb049"
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},
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{
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"url": "https://git.kernel.org/stable/c/201e05aa531eba0dfe2ee05b4e178f6ffa12c8b1"
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},
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{
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"url": "https://git.kernel.org/stable/c/22666ba1420164753d7b0f5a841986b25ace5435"
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}
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],
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"title": "forcedeth: fix UAF of txrx_stats in nv_remove",
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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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"id": "CVE-2026-74548",
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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": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T18:59:51.900384Z"
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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": "2026-10-16T19:05:55.094Z"
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}
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}
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]
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}
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} |