{"id":"CVE-2024-35889","state":"PUBLISHED","title":"idpf: fix kernel panic on unknown packet types","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix kernel panic on unknown packet types\n\nIn the very rare case where a packet type is unknown to the driver,\nidpf_rx_process_skb_fields would return early without calling\neth_type_trans to set the skb protocol / the network layer handler.\nThis is especially problematic if tcpdump is running when such a\npacket is received, i.e. it would cause a kernel panic.\n\nInstead, call eth_type_trans for every single packet, even when\nthe packet type is unknown.","publishedAt":"2024-05-19T08:34:45.274Z","updatedAt":"2026-08-05T11:30:43.420Z","severity":{"score":8.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3a8845af66edb340ba9210bb8a0da040c7d6e590","status":"affected","lessThan":"b4d28f7fa4dd531cf503a4fe1ca7008960cc5832","versionType":"git"},{"version":"3a8845af66edb340ba9210bb8a0da040c7d6e590","status":"affected","lessThan":"dd19e827d63ac60debf117676d1126bff884bdb8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/idpf/idpf_txrx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.8.5","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/idpf/idpf_txrx.c"]}],"references":["https://git.kernel.org/stable/c/b4d28f7fa4dd531cf503a4fe1ca7008960cc5832","https://git.kernel.org/stable/c/dd19e827d63ac60debf117676d1126bff884bdb8"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:30.303Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/35xxx/CVE-2024-35889.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-35889","state":"PUBLISHED","datePublished":"2024-05-19T08:34:45.274Z","dateUpdated":"2026-08-05T11:30:43.420Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-17T13:50:33.113Z"},"containers":{"cna":{"title":"idpf: fix kernel panic on unknown packet types","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix kernel panic on unknown packet types\n\nIn the very rare case where a packet type is unknown to the driver,\nidpf_rx_process_skb_fields would return early without calling\neth_type_trans to set the skb protocol / the network layer handler.\nThis is especially problematic if tcpdump is running when such a\npacket is received, i.e. it would cause a kernel panic.\n\nInstead, call eth_type_trans for every single packet, even when\nthe packet type is unknown."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3a8845af66edb340ba9210bb8a0da040c7d6e590","status":"affected","lessThan":"b4d28f7fa4dd531cf503a4fe1ca7008960cc5832","versionType":"git"},{"version":"3a8845af66edb340ba9210bb8a0da040c7d6e590","status":"affected","lessThan":"dd19e827d63ac60debf117676d1126bff884bdb8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/idpf/idpf_txrx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.8.5","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/idpf/idpf_txrx.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b4d28f7fa4dd531cf503a4fe1ca7008960cc5832"},{"url":"https://git.kernel.org/stable/c/dd19e827d63ac60debf117676d1126bff884bdb8"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","baseScore":8.6,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:N - The bug is reached purely by processing a received Ethernet frame in the idpf splitq NAPI RX path, before any protocol demux, socket lookup, or firewall, so any remote party able to get a packet to the interface triggers it. Frames that the E2100/IPU parser leaves unclassified include routable traffic (unusual IP protocol numbers, exotic IPv6 extension-header chains, unsupported nested tunnels), so reachability is not limited to the local L2 segment.\nAC:L - The attacker fully controls the only variable that matters — the packet's protocol layout — and can sweep encapsulations until the NIC returns a ptype absent from the driver's lookup table; no race, no memory grooming, no timing window. The consumers that turn the malformed skb into a panic or an OOB read (AF_PACKET/tcpdump taps, bridge/OVS rx_handler, GRO header comparison) are ubiquitous on the cloud-host and cloud-VM systems where idpf is deployed, and the GRO path needs no extra configuration at all.\nPR:N - No credentials, authentication, or local account are required; the panic occurs in idpf's softirq RX path before any protocol demux, so the frame need not even be addressed to a listening service. Any unauthenticated sender on the network suffices.\nUI:N - Triggering requires only that the victim's idpf interface be up and receiving; the fault happens in softirq context during ordinary packet reception. No local user or administrator has to open, mount, or click anything.\nS:U - The vulnerable driver code and the impacted resource are both the same kernel — a standard in-kernel crash and in-kernel OOB read with no crossing of a VM, IOMMU, or sandbox security authority.\nC:L - Because mac_header is left at the 0xFFFF \"unset\" sentinel, consumers dereference skb->head + 65535: gro_list_prepare()'s compare_ether_header() reads 14 bytes of unrelated kernel memory out of bounds on the normal GRO path, and br_handle_frame() reads eth_hdr()->h_source from the same address, with those out-of-bounds bytes then learned into the bridge FDB where any local user can read them back via netlink. The disclosure is real but bounded to a fixed 14-byte window rather than an arbitrary read.\nI:L - Out-of-bounds bytes are written into kernel forwarding state (bridge FDB entries learned from head+65535), and the skb is propagated with corrupted metadata — protocol 0, wrapped mac_len, un-stripped Ethernet header — which misdirects downstream forwarding and header parsing. There is no arbitrary-write primitive: skb_push()'s underflow is caught by the skb_under_panic() bounds check before any memory is written, so the impact is limited rather than High.\nA:H - packet_rcv()/tpacket_rcv() computes a ~4-billion-byte skb_push() length from the unset mac_header, driving skb->data below skb->head and hitting skb_under_panic() → BUG() from NAPI/softirq context — a fatal exception in interrupt and a full kernel panic. A single crafted frame takes the machine down and can be replayed at will against every affected host."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T11:30:43.420Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.8.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.9"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-35889","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-05-23T19:38:07.128474Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-06-04T17:34:30.127Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/b4d28f7fa4dd531cf503a4fe1ca7008960cc5832","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/dd19e827d63ac60debf117676d1126bff884bdb8","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T03:21:48.615Z"}}]}}}