{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-48962", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-22T01:27:53.628Z", "datePublished": "2024-10-21T20:05:46.514Z", "dateUpdated": "2026-08-05T08:53:09.824Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:53:09.824Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hisilicon: Fix potential use-after-free in hisi_femac_rx()\n\nThe skb is delivered to napi_gro_receive() which may free it, after\ncalling this, dereferencing skb may trigger use-after-free." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The bug is in the Hisilicon FEMAC Fast Ethernet MAC RX path (hisi_femac_rx), reached when frames arrive on the L2 Ethernet segment of Hi3516CV300 and similar SoCs; an attacker must be on the same LAN/broadcast domain to deliver those frames, matching Adjacent scoring for Ethernet NIC RX UAFs of this class.\nAC:L - An adjacent peer can reliably force GRO merge (GRO_MERGED_FREE) by bursting same-flow TCP segments so napi_gro_receive() frees the skb before the immediate skb->len read; no attacker-uncontrollable race or rare config is required.\nPR:N - Frame delivery runs in softirq/NAPI with no host authentication or capability check; any unauthenticated peer that can put Ethernet frames on the wire triggers the path.\nUI:N - RX interrupt and NAPI processing run automatically once the interface is up; no victim action such as opening a file or confirming a prompt is required.\nS:U - The use-after-free corrupts host-kernel sk_buff heap state within the same OS security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - This is a heap use-after-free of an sk_buff after napi_gro_receive may free it; reclaiming the general-purpose slab object enables disclosure of reused kernel memory via the dangling skb->len read, scored High per UAF guidance.\nI:H - sk_buff use-after-free in a general-purpose slab is a classic heap-grooming primitive that can yield attacker-controlled object reuse and control-flow hijacking, so integrity impact is High per kernel UAF scoring guidance.\nA:H - Dereferencing a freed sk_buff can oops/panic the kernel, and an adjacent attacker can repeatedly inject frames to crash the host at will." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/hisilicon/hisi_femac.c" ], "versions": [ { "version": "542ae60af24f02e130e62cb3b7c23163a2350056", "lessThan": "3501da8eb6d0f5f114a09ec953c54423f6f35885", "status": "affected", "versionType": "git" }, { "version": "542ae60af24f02e130e62cb3b7c23163a2350056", "lessThan": "196e12671cb629d9f3b77b4d8bec854fc445533a", "status": "affected", "versionType": "git" }, { "version": "542ae60af24f02e130e62cb3b7c23163a2350056", "lessThan": "aceec8ab752428d8e151321479e82cc1a40fee2e", "status": "affected", "versionType": "git" }, { "version": "542ae60af24f02e130e62cb3b7c23163a2350056", "lessThan": "e71a46cc8c9ad75f3bb0e4b361e81f79c0214cca", "status": "affected", "versionType": "git" }, { "version": "542ae60af24f02e130e62cb3b7c23163a2350056", "lessThan": "296a50aa8b2982117520713edc1375777a9f8506", "status": "affected", "versionType": "git" }, { "version": "542ae60af24f02e130e62cb3b7c23163a2350056", "lessThan": "6f4798ac9c9e98f41553c4f5e6c832c8860a6942", "status": "affected", "versionType": "git" }, { "version": "542ae60af24f02e130e62cb3b7c23163a2350056", "lessThan": "8595a2db8eb0ffcbb466eb9f4a7507a5ba06ebb9", "status": "affected", "versionType": "git" }, { "version": "542ae60af24f02e130e62cb3b7c23163a2350056", "lessThan": "4640177049549de1a43e9bc49265f0cdfce08cfd", "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/hisilicon/hisi_femac.c" ], "versions": [ { "version": "4.8", "status": "affected" }, { "version": "0", "lessThan": "4.8", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.336", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.302", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.269", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.227", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.159", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.83", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.13", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1", "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": "4.8", "versionEndExcluding": "4.9.336" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "4.14.302" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "4.19.269" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.4.227" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.10.159" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.15.83" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.0.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3501da8eb6d0f5f114a09ec953c54423f6f35885" }, { "url": "https://git.kernel.org/stable/c/196e12671cb629d9f3b77b4d8bec854fc445533a" }, { "url": "https://git.kernel.org/stable/c/aceec8ab752428d8e151321479e82cc1a40fee2e" }, { "url": "https://git.kernel.org/stable/c/e71a46cc8c9ad75f3bb0e4b361e81f79c0214cca" }, { "url": "https://git.kernel.org/stable/c/296a50aa8b2982117520713edc1375777a9f8506" }, { "url": "https://git.kernel.org/stable/c/6f4798ac9c9e98f41553c4f5e6c832c8860a6942" }, { "url": "https://git.kernel.org/stable/c/8595a2db8eb0ffcbb466eb9f4a7507a5ba06ebb9" }, { "url": "https://git.kernel.org/stable/c/4640177049549de1a43e9bc49265f0cdfce08cfd" } ], "title": "net: hisilicon: Fix potential use-after-free in hisi_femac_rx()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2022-48962", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-10-22T13:20:14.894557Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:28:38.998Z" } } ] } }