272 lines
14 KiB
JSON
272 lines
14 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-2024-44940",
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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": "2024-08-21T05:34:56.664Z",
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"datePublished": "2024-08-26T11:20:44.914Z",
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"dateUpdated": "2026-08-05T11:37:09.480Z"
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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": "2026-08-05T11:37:09.480Z"
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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\nfou: remove warn in gue_gro_receive on unsupported protocol\n\nDrop the WARN_ON_ONCE inn gue_gro_receive if the encapsulated type is\nnot known or does not have a GRO handler.\n\nSuch a packet is easily constructed. Syzbot generates them and sets\noff this warning.\n\nRemove the warning as it is expected and not actionable.\n\nThe warning was previously reduced from WARN_ON to WARN_ON_ONCE in\ncommit 270136613bf7 (\"fou: Do WARN_ON_ONCE in gue_gro_receive for bad\nproto callbacks\")."
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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 warning is reached from the NAPI GRO receive path (`udp4_gro_receive` → `gue_gro_receive`) while parsing a UDP datagram arriving from the wire on a host with a FOU/GUE tunnel port, so any remote host that can send a UDP packet to that port triggers it.\nAC:L - The trigger is a single stateless, unsolicited UDP packet whose GUE header carries any `proto_ctype` lacking a registered offload handler; the commit itself notes \"such a packet is easily constructed\" and syzbot generates them, with no race, memory-layout, or timing condition involved.\nPR:N - The GRO path processes the packet before any authentication, authorization, or socket-level filtering — the FOU receive socket is unconnected, so an unauthenticated off-path attacker needs no credentials on the target.\nUI:N - Processing happens automatically in softirq context when the packet is received; no action by any local user or administrator is required.\nS:U - The warning and any resulting panic occur in the kernel of the receiving host, entirely within the same security authority, with no crossing of a VM, container, or IOMMU boundary.\nC:N - Control flow after the WARN is identical to the fixed code (`goto out`); no memory is read out of bounds and nothing is disclosed to the attacker, who cannot observe the kernel log.\nI:N - The bug involves no memory corruption or state modification — the packet is dropped from GRO either way, so no attacker-controlled data is written anywhere.\nA:H - The attacker-triggerable WARN_ON_ONCE becomes an immediate kernel panic on systems configured with `panic_on_warn=1` or a `warn_limit`, a common hardening/crash-dump setting in production, cloud, and Android fleets, allowing a single remote packet to take down the host."
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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/ipv4/fou_core.c"
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],
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"versions": [
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{
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"version": "37dd0247797b168ad1cc7f5dbec825a1ee66535b",
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"lessThan": "a925a200299a6dfc7c172f54da6f374edc930053",
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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": "37dd0247797b168ad1cc7f5dbec825a1ee66535b",
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"lessThan": "b1453a5616c7bd8acd90633ceba4e59105ba3b51",
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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": "37dd0247797b168ad1cc7f5dbec825a1ee66535b",
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"lessThan": "5a2e37bc648a2503bf6d687aed27b9f4455d82eb",
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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": "37dd0247797b168ad1cc7f5dbec825a1ee66535b",
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"lessThan": "3db4395332e7050ef9ddeb3052e6b5019f2a2a59",
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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": "37dd0247797b168ad1cc7f5dbec825a1ee66535b",
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"lessThan": "440ab7f97261bc28501636a13998e1b1946d2e79",
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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": "37dd0247797b168ad1cc7f5dbec825a1ee66535b",
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"lessThan": "dd89a81d850fa9a65f67b4527c0e420d15bf836c",
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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/ipv4/fou_core.c"
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],
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"versions": [
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{
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"version": "3.18",
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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": "3.18",
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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": "5.10.234",
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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": "5.15.174",
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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": "6.1.107",
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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": "6.6.47",
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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": "6.10.6",
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"lessThanOrEqual": "6.10.*",
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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": "6.11",
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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": "3.18",
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"versionEndExcluding": "5.10.234"
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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": "3.18",
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"versionEndExcluding": "5.15.174"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.18",
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"versionEndExcluding": "6.1.107"
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.18",
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"versionEndExcluding": "6.6.47"
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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": "3.18",
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"versionEndExcluding": "6.10.6"
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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": "3.18",
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"versionEndExcluding": "6.11"
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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/a925a200299a6dfc7c172f54da6f374edc930053"
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},
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{
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"url": "https://git.kernel.org/stable/c/b1453a5616c7bd8acd90633ceba4e59105ba3b51"
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},
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{
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"url": "https://git.kernel.org/stable/c/5a2e37bc648a2503bf6d687aed27b9f4455d82eb"
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},
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{
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"url": "https://git.kernel.org/stable/c/3db4395332e7050ef9ddeb3052e6b5019f2a2a59"
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},
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{
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"url": "https://git.kernel.org/stable/c/440ab7f97261bc28501636a13998e1b1946d2e79"
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},
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{
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"url": "https://git.kernel.org/stable/c/dd89a81d850fa9a65f67b4527c0e420d15bf836c"
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}
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],
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"title": "fou: remove warn in gue_gro_receive on unsupported protocol",
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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-2024-44940",
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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": "2024-09-10T15:27:32.251724Z"
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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": "2024-09-12T17:33:06.539Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
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},
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T22:13:45.636Z"
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}
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}
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]
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}
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} |