CVE-2026-97573

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97573", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.156Z", "datePublished": "2026-09-25T10:21:57.443Z", "dateUpdated": "2026-10-19T09:09:35.902Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:09:35.902Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()\n\nbnxt_rx_ring_reset() frees the ring buffers and then reallocates them,\nignoring the result.\n\nbnxt_alloc_one_rx_ring() can fail in bnxt_alloc_one_tpa_info_data(), which\nreturns -ENOMEM on the first failed allocation and leaves the remaining\nrxr->rx_tpa[] entries zeroed.\n\nThe error isn't propagated up, so the loop in bnxt_rx_ring_reset\ncontinues and at the end the code re-enables TPA with partially\nunallocated rx_tpa array.\n\nThis means that when the agg_id from hardware is mapped to a SW index in\nrxr->rx_tpa[], an uninitialized slot can be chosen which would hand a\nzero DMA address to the device.\n\nFix this by falling back to a global reset, which is what the existing\ncode already does when other functions fail, but unlike the other\nfailure cases this particular failure has to return because TPA can't\nbe re-enabled since the allocation failed."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The fixed function bnxt_rx_ring_reset() is a driver error path with no malformed input. What it damages is received data: bnxt_tpa_start() hands the NIC a stale rx_tpa[] mapping, and the NIC DMAs packet bytes sent by a remote host into that freed buffer. The remote peer supplies the data that gets written, so the vector is Network.\nAC:H - Two things must happen together. A pre-P5 chip must hit an RX buffer error, cons mismatch or ring-monitor event that schedules the per-ring reset, and the GFP_KERNEL refill in bnxt_alloc_one_tpa_info_data() must fail under memory pressure. A remote sender cannot force that allocation failure.\nPR:N - No authentication is involved. Any host that can send TCP traffic that the NIC aggregates with TPA (hardware GRO/LRO) fills the stale buffers and can also generate the traffic that leads to RX buffer errors.\nUI:N - No user action is needed. The reset runs from the bnxt sp_task workqueue, and the bad TPA slot is used as soon as TPA_START completions arrive.\nS:U - The corruption hits kernel memory on the host that owns the NIC, which is the same authority as the driver. No VM or other security boundary is crossed.\nC:H - bnxt_free_one_tpa_info_data() clears tpa_info->data but leaves tpa_info->mapping stale. The NIC then writes into a page returned to page_pool that can be reused, and a reused buffer carrying other data can end up delivered as the next RX packet.\nI:H - The device DMA-writes TCP payload bytes chosen by the remote sender into freed memory (bnxt_tpa_start() puts the stale mapping into rx_bd_haddr). That is a write into memory the kernel may have reused, with attacker-chosen contents.\nA:H - The NULL tpa_info->data is moved into rx_buf_ring by bnxt_tpa_start(). When that buffer is consumed, the RX path dereferences NULL, and on top of that the stray DMA corrupts memory, so the kernel crashes."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/broadcom/bnxt/bnxt.c"], "versions": [{"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "lessThan": "52fc97cbc3ba118aad84e7c001bf02ebe8496f70", "status": "affected", "versionType": "git"}, {"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "lessThan": "40b4a7bb6b0b872b45f017dbf211268de098b75c", "status": "affected", "versionType": "git"}, {"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "lessThan": "af9a2bdaba0b4ceb0fc5e5122ef3fc6b7e5a366a", "status": "affected", "versionType": "git"}, {"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "lessThan": "cfec9e7f15a56cb0104bac13d01e5d11e1ba84fb", "status": "affected", "versionType": "git"}, {"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "lessThan": "1a3670b6a6b5679fe56c5890157b344f091e64f8", "status": "affected", "versionType": "git"}, {"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "lessThan": "4a17c73c83798c2fa9c7920ad5a98803adce3e01", "status": "affected", "versionType": "git"}, {"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "lessThan": "8b2fd5c0aeda935294159206af9d6179282d425a", "status": "affected", "versionType": "git"}, {"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "lessThan": "961e2a17c5e3559b3f8654d2daabdd25a42e770a", "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/broadcom/bnxt/bnxt.c"], "versions": [{"version": "5.10", "status": "affected"}, {"version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "5.10", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/52fc97cbc3ba118aad84e7c001bf02ebe8496f70"}, {"url": "https://git.kernel.org/stable/c/40b4a7bb6b0b872b45f017dbf211268de098b75c"}, {"url": "https://git.kernel.org/stable/c/af9a2bdaba0b4ceb0fc5e5122ef3fc6b7e5a366a"}, {"url": "https://git.kernel.org/stable/c/cfec9e7f15a56cb0104bac13d01e5d11e1ba84fb"}, {"url": "https://git.kernel.org/stable/c/1a3670b6a6b5679fe56c5890157b344f091e64f8"}, {"url": "https://git.kernel.org/stable/c/4a17c73c83798c2fa9c7920ad5a98803adce3e01"}, {"url": "https://git.kernel.org/stable/c/8b2fd5c0aeda935294159206af9d6179282d425a"}, {"url": "https://git.kernel.org/stable/c/961e2a17c5e3559b3f8654d2daabdd25a42e770a"}], "title": "bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/broadcom/bnxt/bnxt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "52fc97cbc3ba118aad84e7c001bf02ebe8496f70", "status": "affected", "version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "versionType": "git"}, {"lessThan": "40b4a7bb6b0b872b45f017dbf211268de098b75c", "status": "affected", "version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "versionType": "git"}, {"lessThan": "af9a2bdaba0b4ceb0fc5e5122ef3fc6b7e5a366a", "status": "affected", "version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "versionType": "git"}, {"lessThan": "cfec9e7f15a56cb0104bac13d01e5d11e1ba84fb", "status": "affected", "version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "versionType": "git"}, {"lessThan": "1a3670b6a6b5679fe56c5890157b344f091e64f8", "status": "affected", "version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "versionType": "git"}, {"lessThan": "4a17c73c83798c2fa9c7920ad5a98803adce3e01", "status": "affected", "version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "versionType": "git"}, {"lessThan": "8b2fd5c0aeda935294159206af9d6179282d425a", "status": "affected", "version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "versionType": "git"}, {"lessThan": "961e2a17c5e3559b3f8654d2daabdd25a42e770a", "status": "affected", "version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/broadcom/bnxt/bnxt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"lessThan": "5.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()\n\nbnxt_rx_ring_reset() frees the ring buffers and then reallocates them,\nignoring the result.\n\nbnxt_alloc_one_rx_ring() can fail in bnxt_alloc_one_tpa_info_data(), which\nreturns -ENOMEM on the first failed allocation and leaves the remaining\nrxr->rx_tpa[] entries zeroed.\n\nThe error isn't propagated up, so the loop in bnxt_rx_ring_reset\ncontinues and at the end the code re-enables TPA with partially\nunallocated rx_tpa array.\n\nThis means that when the agg_id from hardware is mapped to a SW index in\nrxr->rx_tpa[], an uninitialized slot can be chosen which would hand a\nzero DMA address to the device.\n\nFix this by falling back to a global reset, which is what the existing\ncode already does when other functions fail, but unlike the other\nfailure cases this particular failure has to return because TPA can't\nbe re-enabled since the allocation failed."}], "id": "CVE-2026-97573", "lastModified": "2026-10-19T10:17:26.470", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-25T11:17:08.017", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1a3670b6a6b5679fe56c5890157b344f091e64f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/40b4a7bb6b0b872b45f017dbf211268de098b75c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4a17c73c83798c2fa9c7920ad5a98803adce3e01"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/52fc97cbc3ba118aad84e7c001bf02ebe8496f70"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b2fd5c0aeda935294159206af9d6179282d425a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/961e2a17c5e3559b3f8654d2daabdd25a42e770a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/af9a2bdaba0b4ceb0fc5e5122ef3fc6b7e5a366a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cfec9e7f15a56cb0104bac13d01e5d11e1ba84fb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()", "id": "2541032", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541032"}, "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"}, "cwe": "CWE-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()\nbnxt_rx_ring_reset() frees the ring buffers and then reallocates them,\nignoring the result.\nbnxt_alloc_one_rx_ring() can fail in bnxt_alloc_one_tpa_info_data(), which\nreturns -ENOMEM on the first failed allocation and leaves the remaining\nrxr->rx_tpa[] entries zeroed.\nThe error isn't propagated up, so the loop in bnxt_rx_ring_reset\ncontinues and at the end the code re-enables TPA with partially\nunallocated rx_tpa array.\nThis means that when the agg_id from hardware is mapped to a SW index in\nrxr->rx_tpa[], an uninitialized slot can be chosen which would hand a\nzero DMA address to the device.\nFix this by falling back to a global reset, which is what the existing\ncode already does when other functions fail, but unlike the other\nfailure cases this particular failure has to return because TPA can't\nbe re-enabled since the allocation failed.", "A flaw was found in the Linux kernel's Broadcom NetXtreme-E (bnxt_en) network driver. The driver fails to verify memory allocation success during receive ring buffer resets, ignoring failure responses when memory is low. A local user or network event that triggers a reset under memory exhaustion can cause the driver to supply uninitialized Direct Memory Access (DMA) addresses to the network device, resulting in a system crash and a Denial of Service (DoS)."], "name": "CVE-2026-97573", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97573\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97573\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97573.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8fbf58e17dce8f250dda9ad6b0a49b3041f0af14,1a3670b6a6b5679fe56c5890157b344f091e64f8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8fbf58e17dce8f250dda9ad6b0a49b3041f0af14,4a17c73c83798c2fa9c7920ad5a98803adce3e01)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8fbf58e17dce8f250dda9ad6b0a49b3041f0af14,8b2fd5c0aeda935294159206af9d6179282d425a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8fbf58e17dce8f250dda9ad6b0a49b3041f0af14,961e2a17c5e3559b3f8654d2daabdd25a42e770a)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T17:00:16.143264+00:00", "updated": "2026-10-01T09:30:05.891026+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}