{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-50094", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.943Z", "datePublished": "2024-11-05T17:04:57.299Z", "dateUpdated": "2025-05-04T09:45:50.181Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:45:50.181Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: Don't invoke xdp_do_flush() from netpoll.\n\nYury reported a crash in the sfc driver originated from\nnetpoll_send_udp(). The netconsole sends a message and then netpoll\ninvokes the driver's NAPI function with a budget of zero. It is\ndedicated to allow driver to free TX resources, that it may have used\nwhile sending the packet.\n\nIn the netpoll case the driver invokes xdp_do_flush() unconditionally,\nleading to crash because bpf_net_context was never assigned.\n\nInvoke xdp_do_flush() only if budget is not zero."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/sfc/efx_channels.c", "drivers/net/ethernet/sfc/siena/efx_channels.c"], "versions": [{"version": "401cb7dae8130fd34eb84648e02ab4c506df7d5e", "lessThan": "65d4fc76d75c136744e67754d20feda609e7b793", "status": "affected", "versionType": "git"}, {"version": "401cb7dae8130fd34eb84648e02ab4c506df7d5e", "lessThan": "55e802468e1d38dec8e25a2fdb6078d45b647e8c", "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/sfc/efx_channels.c", "drivers/net/ethernet/sfc/siena/efx_channels.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.4", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "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": "6.11", "versionEndExcluding": "6.11.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/65d4fc76d75c136744e67754d20feda609e7b793"}, {"url": "https://git.kernel.org/stable/c/55e802468e1d38dec8e25a2fdb6078d45b647e8c"}], "title": "sfc: Don't invoke xdp_do_flush() from netpoll.", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "66F99BD9-E74F-4CC8-834E-B73BD4643C7B", "versionEndExcluding": "6.11.4", "versionStartIncluding": "6.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: Don't invoke xdp_do_flush() from netpoll.\n\nYury reported a crash in the sfc driver originated from\nnetpoll_send_udp(). The netconsole sends a message and then netpoll\ninvokes the driver's NAPI function with a budget of zero. It is\ndedicated to allow driver to free TX resources, that it may have used\nwhile sending the packet.\n\nIn the netpoll case the driver invokes xdp_do_flush() unconditionally,\nleading to crash because bpf_net_context was never assigned.\n\nInvoke xdp_do_flush() only if budget is not zero."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sfc: No invoque xdp_do_flush() desde netpoll. Yury inform\u00f3 de un fallo en el controlador sfc originado desde netpoll_send_udp(). La netconsole env\u00eda un mensaje y luego netpoll invoca la funci\u00f3n NAPI del controlador con un presupuesto de cero. Est\u00e1 dedicada a permitir que el controlador libere recursos TX, que puede haber usado al enviar el paquete. En el caso de netpoll, el controlador invoca xdp_do_flush() incondicionalmente, lo que provoca un fallo porque bpf_net_context nunca se asign\u00f3. Invoque xdp_do_flush() solo si el presupuesto no es cero."}], "id": "CVE-2024-50094", "lastModified": "2024-11-13T00:42:02.983", "metrics": {"cvssMetricV31": [{"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"}]}, "published": "2024-11-05T17:15:06.733", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/55e802468e1d38dec8e25a2fdb6078d45b647e8c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/65d4fc76d75c136744e67754d20feda609e7b793"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: sfc: Don't invoke xdp_do_flush() from netpoll.", "id": "2323946", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2323946"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-400", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nsfc: Don't invoke xdp_do_flush() from netpoll.\nYury reported a crash in the sfc driver originated from\nnetpoll_send_udp(). The netconsole sends a message and then netpoll\ninvokes the driver's NAPI function with a budget of zero. It is\ndedicated to allow driver to free TX resources, that it may have used\nwhile sending the packet.\nIn the netpoll case the driver invokes xdp_do_flush() unconditionally,\nleading to crash because bpf_net_context was never assigned.\nInvoke xdp_do_flush() only if budget is not zero."], "name": "CVE-2024-50094", "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": "2024-11-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50094\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50094\nhttps://lore.kernel.org/linux-cve-announce/2024110551-CVE-2024-50094-5963@gregkh/T"], "threat_severity": "Moderate"}