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-2022-49026",
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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": "2024-08-22T01:27:53.651Z",
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"datePublished": "2024-10-21T20:06:31.876Z",
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"dateUpdated": "2026-08-05T08:53:32.469Z"
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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": "2026-08-05T08:53:32.469Z"
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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\ne100: Fix possible use after free in e100_xmit_prepare\n\nIn e100_xmit_prepare(), if we can't map the skb, then return -ENOMEM, so\ne100_xmit_frame() will return NETDEV_TX_BUSY and the upper layer will\nresend the skb. But the skb is already freed, which will cause UAF bug\nwhen the upper layer resends the skb.\n\nRemove the harmful free."
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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 in the e100 ndo_start_xmit path (e100_xmit_frame → e100_exec_cb → e100_xmit_prepare), reached when a local process transmits via an ordinary socket send routed over the e100 netdev; remote peers do not parse into this TX-prepare path.\nAC:L - Once DMA mapping fails, the free-then-NETDEV_TX_BUSY requeue UAF is deterministic with no race; a local attacker can induce mapping failure by exhausting swiotlb/IOMMU resources against this 32-bit DMA device, which is within attacker influence.\nPR:L - Any unprivileged local user can send packets out an up e100 interface through the generic networking stack; no CAP_NET_ADMIN or other capability is required on the transmit path.\nUI:N - The attacker triggers the TX path and resource exhaustion themselves via their own send syscalls; no victim action is required.\nS:U - This is a standard in-kernel skb heap UAF enabling local privilege escalation within the same kernel security authority, with no VM, IOMMU, or sandbox boundary crossed.\nC:H - Use-after-free of the requeued skb allows heap spraying and reuse of the freed object, enabling arbitrary kernel memory disclosure primitives.\nI:H - The same skb UAF (and the dangling cb->skb later freed again in e100_clean_cbs) enables heap corruption and write primitives suitable for control-flow hijacking or arbitrary kernel writes.\nA:H - Reusing the freed skb on TX retry or interface cleanup reliably causes kernel oops/panic even without a full exploit."
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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/e100.c"
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],
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"versions": [
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{
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"version": "5e5d49422dfb035ca9e280cd61d434095c151272",
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"lessThan": "b775f37d943966f6f77dca402f5a9dedce502c25",
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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": "5e5d49422dfb035ca9e280cd61d434095c151272",
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"lessThan": "9fc27d22cdb9b1fcd754599d216a8992fed280cd",
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"status": "affected",
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{
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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/e100.c"
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],
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"versions": [
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{
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"version": "4.3",
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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": "4.3",
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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": "5.10.158",
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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": "5.15.82",
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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": "6.0.12",
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"lessThanOrEqual": "6.0.*",
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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",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.3",
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"versionEndExcluding": "5.10.158"
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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/b775f37d943966f6f77dca402f5a9dedce502c25"
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},
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{
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"url": "https://git.kernel.org/stable/c/9fc27d22cdb9b1fcd754599d216a8992fed280cd"
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},
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{
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"url": "https://git.kernel.org/stable/c/b46f6144ab89d3d757ead940759c505091626a7d"
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},
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{
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"url": "https://git.kernel.org/stable/c/45605c75c52c7ae7bfe902214343aabcfe5ba0ff"
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}
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],
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"title": "e100: Fix possible use after free in e100_xmit_prepare",
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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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"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-2022-49026",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2024-10-22T13:11:54.975076Z"
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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": "2024-10-22T13:18:36.450Z"
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}
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}
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]
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}
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} |