CVE-2023-53394

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The cqe flushing\nis done in the reset state of the rq. mlx5e_rq_to_ready code is moved\ninto the flush function to allow for this."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is triggered by local AF_XDP bind/teardown that calls ndo_bpf(XDP_SETUP_XSK_POOL) into mlx5e_xsk_enable/disable_locked, which flushes and later reactivates the regular RQ; remote packets alone cannot drive that control path.\nAC:L - The attacker fully controls XSK open/close (and can generate the concurrent RX traffic that leaves stale CQEs), so the flush-without-CQE-drain then reactivate sequence is reliably inducible with no race or layout outside attacker influence.\nPR:L - AF_XDP creation only needs ns_capable(CAP_NET_RAW), and XDP/XSK setup needs CAP_NET_ADMIN/CAP_BPF in the netns owner user_ns; both are obtainable via unshare -Urn, including on an mlx5 VF delegated into a container netns.\nUI:N - The attacker loads XDP, binds/closes the XSK socket, and supplies traffic entirely on its own; no separate victim action is required.\nS:U - Impact is confined to the host kernel\u2019s mlx5e RQ/page-pool objects within the same OS security authority, with no VM escape, IOMMU bypass, or sandbox boundary crossed.\nC:H - Processing stale CQEs against a refilled RQ desynchronizes WQE/page accounting so completion and free_rx_descs can release or reuse page_pool pages still referenced elsewhere, yielding a use-after-free read primitive over reclaimed pages.\nI:H - The same RQ corruption produces page double-free/UAF on the close/deactivate path (and DMA into recycled buffers while HW may still complete), which with heap spraying is exploitable for arbitrary kernel memory corruption and control-flow hijack.\nA:H - The commit-documented result is RQ corruption that stops RX and crashes on the next close/deactivation (oops/panic), which is a full availability loss."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en_main.c"], "versions": [{"version": "082a9edf12fef88400172e7d1b131d65a3ed492e", "lessThan": "ecf583abb07da326d5058dc6ba79dae58aa800d3", "status": "affected", "versionType": "git"}, {"version": "082a9edf12fef88400172e7d1b131d65a3ed492e", "lessThan": "02a84eb2af6bea7871cd34264fb27f141f005fd9", "status": "affected", "versionType": "git"}, {"version": "082a9edf12fef88400172e7d1b131d65a3ed492e", "lessThan": "39646d9bcd1a65d2396328026626859a1dab59d7", "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/mellanox/mlx5/core/en_main.c"], "versions": [{"version": "6.1", "status": "affected"}, {"version": "0", "lessThan": "6.1", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.4.10", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5", "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": "6.1", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.4.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.5"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ecf583abb07da326d5058dc6ba79dae58aa800d3"}, {"url": "https://git.kernel.org/stable/c/02a84eb2af6bea7871cd34264fb27f141f005fd9"}, {"url": "https://git.kernel.org/stable/c/39646d9bcd1a65d2396328026626859a1dab59d7"}], "title": "net/mlx5e: xsk: Fix crash on regular rq reactivation", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2023-53394", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-14T18:59:43.131324Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T19:03:05.902Z"}}]}}

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The cqe flushing\nis done in the reset state of the rq. mlx5e_rq_to_ready code is moved\ninto the flush function to allow for this."}], "id": "CVE-2023-53394", "lastModified": "2026-10-30T13:17:18.240", "metrics": {"cvssMetricV31": [{"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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-53394", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-14T18:59:43.131324Z", "version": "2.0.3"}}]}, "published": "2025-09-18T14:15:42.580", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/02a84eb2af6bea7871cd34264fb27f141f005fd9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/39646d9bcd1a65d2396328026626859a1dab59d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ecf583abb07da326d5058dc6ba79dae58aa800d3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net/mlx5e: xsk: Fix crash on regular rq reactivation", "id": "2396380", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2396380"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-53394", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53394\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53394\nhttps://lore.kernel.org/linux-cve-announce/2025091859-CVE-2023-53394-dd17@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-19T09:36:39.269242+00:00", "updated": "2025-09-19T09:36:39.269289+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}