180 lines
9.3 KiB
JSON
180 lines
9.3 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-2023-53033",
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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": "2025-03-27T16:40:15.758Z",
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"datePublished": "2025-03-27T16:44:01.044Z",
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"dateUpdated": "2026-08-05T09:12:27.289Z"
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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": "2026-08-05T09:12:27.289Z"
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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\nnetfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits\n\nIf the offset + length goes over the ethernet + vlan header, then the\nlength is adjusted to copy the bytes that are within the boundaries of\nthe vlan_ethhdr scratchpad area. The remaining bytes beyond ethernet +\nvlan header are copied directly from the skbuff data area.\n\nFix incorrect arithmetic operator: subtract, not add, the size of the\nvlan header in case of double-tagged packets to adjust the length\naccordingly to address CVE-2023-0179."
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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 bug is reached by installing crafted nftables nft_payload rules via netlink and then processing packets in that chain; netfilter/nftables rule install is a local attack surface, not remote pre-auth packet parsing alone.\nAC:L - An attacker fully controls the prerequisites by creating VLAN interfaces and nftables rules in their own netns and sending packets that hit the path; public PoCs trigger the overflow reliably with no races or luck.\nPR:L - CAP_NET_ADMIN is required for nfnetlink/nftables, but it is obtainable by an unprivileged user via user+network namespaces (unshare -Urn), which scores as Low per kernel CNA guidance.\nUI:N - The attacker installs rules and triggers packet evaluation themselves; no victim action is required.\nS:U - Impact is local kernel memory corruption and privilege escalation within the host kernel authority, not a cross-boundary escape such as guest-to-host or IOMMU bypass.\nC:H - The stack OOB write overwrites adjacent nft_regs and enables reliable leakage of stack/heap kernel addresses (KASLR defeat), giving a high-impact confidentiality compromise.\nI:H - Controlled stack overflow of regs/jumpstack enables expression/control-flow hijacking and demonstrated arbitrary kernel write (e.g. modprobe_path) for local root.\nA:H - Corrupt jumpstack/rule pointers readily cause kernel GPFs and panics, so availability impact is complete host crash."
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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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"net/netfilter/nft_payload.c"
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],
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"versions": [
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{
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"version": "f6ae9f120dada00abfb47313364c35118469455f",
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"lessThan": "550efeff989b041f3746118c0ddd863c39ddc1aa",
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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": "f6ae9f120dada00abfb47313364c35118469455f",
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"lessThan": "a8acfe2c6fb99f9375a9325807a179cd8c32e6e3",
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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": "f6ae9f120dada00abfb47313364c35118469455f",
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"lessThan": "76ef74d4a379faa451003621a84e3498044e7aa3",
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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": "f6ae9f120dada00abfb47313364c35118469455f",
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"lessThan": "696e1a48b1a1b01edad542a1ef293665864a4dd0",
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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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"net/netfilter/nft_payload.c"
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],
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"versions": [
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{
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"version": "5.5",
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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": "5.5",
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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": "5.10.164",
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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": "5.15.89",
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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": "6.1.7",
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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": "6.2",
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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": "5.5",
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"versionEndExcluding": "5.10.164"
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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": "5.5",
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"versionEndExcluding": "5.15.89"
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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": "5.5",
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"versionEndExcluding": "6.1.7"
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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": "5.5",
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"versionEndExcluding": "6.2"
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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/550efeff989b041f3746118c0ddd863c39ddc1aa"
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},
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{
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"url": "https://git.kernel.org/stable/c/a8acfe2c6fb99f9375a9325807a179cd8c32e6e3"
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},
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{
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"url": "https://git.kernel.org/stable/c/76ef74d4a379faa451003621a84e3498044e7aa3"
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},
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{
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"url": "https://git.kernel.org/stable/c/696e1a48b1a1b01edad542a1ef293665864a4dd0"
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}
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],
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"title": "netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits",
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"x_generator": {
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} |