243 lines
13 KiB
JSON
243 lines
13 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-2022-49084",
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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": "2025-02-26T01:49:39.248Z",
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"datePublished": "2025-02-26T01:54:43.099Z",
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"dateUpdated": "2026-08-05T08:53:47.633Z"
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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": "2026-08-05T08:53:47.633Z"
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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\nqede: confirm skb is allocated before using\n\nqede_build_skb() assumes build_skb() always works and goes straight\nto skb_reserve(). However, build_skb() can fail under memory pressure.\nThis results in a kernel panic because the skb to reserve is NULL.\n\nAdd a check in case build_skb() failed to allocate and return NULL.\n\nThe NULL return is handled correctly in callers to qede_build_skb()."
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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 - qede is the QLogic/Marvell FastLinQ Ethernet NIC RX path (qede_msix_fp_int → NAPI qede_poll → qede_rx_int → qede_rx_process_cqe → qede_rx_build_skb → qede_build_skb), reached when frames arrive on internet-facing servers and cloud VFs; a remote peer triggers it by sending packets.\nAC:L - build_skb() uses GFP_ATOMIC and fails under atomic allocation pressure that a sustained packet flood readily creates, and frames larger than the 256-byte rx_copybreak (or TPA/GRO) deterministically take the vulnerable path; the attacker drives both reachability and the failure condition.\nPR:N - NIC receive and NAPI softirq processing run on every inbound frame with no authentication, capability check, or local account required.\nUI:N - Reception and NAPI polling proceed automatically whenever the qede interface is up; no victim action such as opening a file or mounting a filesystem is needed.\nS:U - The NULL dereference and resulting oops remain inside the host kernel that owns the qede driver; no VM escape, IOMMU bypass, or other cross-authority boundary is crossed.\nC:N - skb_reserve() on a NULL skb is a pure NULL pointer dereference of fixed struct offsets below mmap_min_addr with no OOB read, UAF reclaim, or other disclosure primitive.\nI:N - The fault stores through a NULL skb pointer and aborts immediately without modifying attacker-influenced kernel objects, so there is no write primitive or control-flow hijack.\nA:H - The NULL dereference in skb_reserve() causes a kernel oops/panic in softirq/NAPI context, which is a full availability impact under kernel CVSS guidance."
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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/qlogic/qede/qede_fp.c"
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],
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"versions": [
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{
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"version": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
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"lessThan": "9648adb1b3ece55c657d3a4f52bfee663b710dfe",
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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": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
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"lessThan": "034a92c6a81048128fc7b18d278d52438a13902a",
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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": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
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"lessThan": "8928239e5e2e460d95b8a0b89f61671625e7ece0",
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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": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
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"lessThan": "c9bdce2359b5f4986eb38d1e81865b3586cc20d2",
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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": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
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"lessThan": "b2d6b3db9d1cf80908964036dbe1c52a86b1afb1",
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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": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
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"lessThan": "e1fd0c42acfa22bb34d2ab6a111484f466ab8093",
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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": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
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"lessThan": "4e910dbe36508654a896d5735b318c0b88172570",
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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/qlogic/qede/qede_fp.c"
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],
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"versions": [
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{
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"version": "4.18",
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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": "4.18",
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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": "4.19.238",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.189",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.111",
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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": "5.15.34",
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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": "5.16.20",
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"lessThanOrEqual": "5.16.*",
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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": "5.17.3",
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"lessThanOrEqual": "5.17.*",
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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": "5.18",
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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": "4.18",
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"versionEndExcluding": "4.19.238"
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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": "4.18",
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"versionEndExcluding": "5.4.189"
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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": "4.18",
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"versionEndExcluding": "5.10.111"
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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": "4.18",
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"versionEndExcluding": "5.15.34"
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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": "4.18",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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": "4.18",
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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/9648adb1b3ece55c657d3a4f52bfee663b710dfe"
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},
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{
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"url": "https://git.kernel.org/stable/c/034a92c6a81048128fc7b18d278d52438a13902a"
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},
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{
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"url": "https://git.kernel.org/stable/c/8928239e5e2e460d95b8a0b89f61671625e7ece0"
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},
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{
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"url": "https://git.kernel.org/stable/c/c9bdce2359b5f4986eb38d1e81865b3586cc20d2"
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},
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{
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"url": "https://git.kernel.org/stable/c/b2d6b3db9d1cf80908964036dbe1c52a86b1afb1"
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},
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{
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"url": "https://git.kernel.org/stable/c/e1fd0c42acfa22bb34d2ab6a111484f466ab8093"
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},
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{
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"url": "https://git.kernel.org/stable/c/4e910dbe36508654a896d5735b318c0b88172570"
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}
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],
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"title": "qede: confirm skb is allocated before using",
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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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}
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} |