CVE-2022-48960

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The bug is in the Hisilicon HIX5HD2 Gigabit Ethernet MAC RX path (hix5hd2_rx), reached when frames arrive on the L2 Ethernet segment of hi3516a/hi3798cv200 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; GRO is enabled by default via NETIF_F_SOFT_FEATURES and no attacker-uncontrollable race 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/hix5hd2_gmac.c"], "versions": [{"version": 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"https://git.kernel.org/stable/c/1b6360a093ab8969c91a30bb58b753282e2ced4c"}, {"url": "https://git.kernel.org/stable/c/93aaa4bb72e388f6a4887541fd3d18b84f1b5ddc"}, {"url": "https://git.kernel.org/stable/c/b8ce0e6f9f88a6bb49d291498377e61ea27a5387"}, {"url": "https://git.kernel.org/stable/c/b6307f7a2fc1c5407b6176f2af34a95214a8c262"}, {"url": "https://git.kernel.org/stable/c/433c07a13f59856e4585e89e86b7d4cc59348fab"}], "title": "net: hisilicon: Fix potential use-after-free in hix5hd2_rx()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-48960", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:20:30.429141Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:28:39.279Z"}}]}}

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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; GRO is enabled by default via NETIF_F_SOFT_FEATURES and no attacker-uncontrollable race 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": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "57c5bc9ad7d799e9507ba6e993398d2c55f03fab", "lessThan": "179499e7a240b2ef590f05eb379c810c26bbc8a4", "versionType": "git"}, {"status": "affected", "version": "57c5bc9ad7d799e9507ba6e993398d2c55f03fab", "lessThan": "8067cd244cea2c332f8326842fd10158fa2cb64f", "versionType": "git"}, {"status": "affected", "version": 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"vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*", "matchCriteriaId": "3FFFB0B3-930D-408A-91E2-BAE0C2715D80", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*", "matchCriteriaId": "8535320E-A0DB-4277-800E-D0CE5BBA59E8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc8:*:*:*:*:*:*", "matchCriteriaId": "21718AA4-4056-40F2-968E-BDAA465A7872", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hisilicon: Fix potential use-after-free in hix5hd2_rx()\n\nThe skb is delivered to napi_gro_receive() which may free it, after\ncalling this, dereferencing skb may trigger use-after-free."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: hisilicon: Se corrige un posible use after free en hix5hd2_rx() El skb se env\u00eda a napi_gro_receive() que puede liberarlo; despu\u00e9s de llamarlo, desreferenciar skb puede desencadenar un use after free."}], "id": "CVE-2022-48960", "lastModified": "2026-08-04T10:17:28.480", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-48960", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-22T13:20:30.429141Z", "version": "2.0.3"}}]}, "published": "2024-10-21T20:15:07.663", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/179499e7a240b2ef590f05eb379c810c26bbc8a4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1b6360a093ab8969c91a30bb58b753282e2ced4c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3a4eddd1cb023a71df4152fcc76092953e6fe95a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/433c07a13f59856e4585e89e86b7d4cc59348fab"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8067cd244cea2c332f8326842fd10158fa2cb64f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/93aaa4bb72e388f6a4887541fd3d18b84f1b5ddc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b6307f7a2fc1c5407b6176f2af34a95214a8c262"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b8ce0e6f9f88a6bb49d291498377e61ea27a5387"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: hisilicon: Fix potential use-after-free in hix5hd2_rx()", "id": "2320662", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320662"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: hisilicon: Fix potential use-after-free in hix5hd2_rx()\nThe skb is delivered to napi_gro_receive() which may free it, after\ncalling this, dereferencing skb may trigger use-after-free."], "name": "CVE-2022-48960", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48960\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48960\nhttps://lore.kernel.org/linux-cve-announce/2024102142-CVE-2022-48960-c9af@gregkh/T"], "threat_severity": "Moderate"}

{}