{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-46799", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-09-11T15:12:18.280Z", "datePublished": "2024-09-18T07:12:53.508Z", "dateUpdated": "2026-08-05T11:38:38.529Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:38:38.529Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: ti: am65-cpsw: Fix NULL dereference on XDP_TX\n\nIf number of TX queues are set to 1 we get a NULL pointer\ndereference during XDP_TX.\n\n~# ethtool -L eth0 tx 1\n~# ./xdp-trafficgen udp -A -a eth0 -t 2\nTransmitting on eth0 (ifindex 2)\n[ 241.135257] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030\n\nFix this by using actual TX queues instead of max TX queues\nwhen picking the TX channel in am65_cpsw_ndo_xdp_xmit()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - The vulnerable function is the XDP_REDIRECT egress hook, invoked from `bq_xmit_all()` while processing received network frames, so a remote sender's packet drives the code path on an XDP-forwarding TI CPSW gateway. No local access to the target is required to deliver the triggering frame.\nAC:L - Given the vulnerable configuration (TX channels reduced below CPU count with an XDP redirect program attached), every redirected frame handled on a CPU index at or above `tx_ch_num` faults deterministically, and with one TX channel that is most CPUs on a 4- or 8-core SoC. The attacker can further steer which RX CPU handles the flow by varying source ports, so no condition outside their control must align.\nPR:N - Triggering only requires sending a frame that the already-loaded XDP program redirects out the CPSW port; no credentials or account on the target are needed. The privileged steps (`ethtool -L`, XDP attach) are the administrator's configuration, not part of the attack.\nUI:N - The crash occurs autonomously in softirq/NAPI context as soon as a redirected frame is processed. No victim action is required.\nS:U - The fault is confined to the kernel of the affected host; no VM, IOMMU, or sandbox boundary is crossed. Impact stays within the same security authority.\nC:N - The index stays inside the fixed 8-element `tx_chns[]` array, so there is no out-of-bounds read, and the dereference is of a NULL `desc_pool` at a small fixed offset. No kernel memory contents are read or disclosed.\nI:N - No out-of-bounds or use-after-free write occurs; the faulting address is in the unmappable low page (blocked by `mmap_min_addr` and arm64 PAN), so no write or control-flow primitive is available. Nothing is modified before the oops.\nA:H - The NULL dereference produces a kernel oops in softirq/NAPI context, killing the network datapath and typically panicking the system on embedded configurations with `panic_on_oops`. It repeats on every redirected packet, so the denial of service is total and sustained." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/ti/am65-cpsw-nuss.c" ], "versions": [ { "version": "8acacc40f7337527ff84cd901ed2ef0a2b95b2b6", "lessThan": "2e7189d2b1de51fc2567676cd4f96c0fe0960b9f", "status": "affected", "versionType": "git" }, { "version": "8acacc40f7337527ff84cd901ed2ef0a2b95b2b6", "lessThan": "0a50c35277f96481a5a6ed5faf347f282040c57d", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/ti/am65-cpsw-nuss.c" ], "versions": [ { "version": "6.10", "status": "affected" }, { "version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.10", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.10.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/2e7189d2b1de51fc2567676cd4f96c0fe0960b9f" }, { "url": "https://git.kernel.org/stable/c/0a50c35277f96481a5a6ed5faf347f282040c57d" } ], "title": "net: ethernet: ti: am65-cpsw: Fix NULL dereference on XDP_TX", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-09-29T14:21:59.771097Z", "id": "CVE-2024-46799", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-29T14:22:10.684Z" } } ] } }