CVE-2025-22108

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-22108", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.820Z", "datePublished": "2025-04-16T14:12:55.737Z", "dateUpdated": "2026-09-07T15:44:43.232Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-07T15:44:43.232Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Mask the bd_cnt field in the TX BD properly\n\nThe bd_cnt field in the TX BD specifies the total number of BDs for\nthe TX packet. The bd_cnt field has 5 bits and the maximum number\nsupported is 32 with the value 0.\n\nCONFIG_MAX_SKB_FRAGS can be modified and the total number of SKB\nfragments can approach or exceed the maximum supported by the chip.\nAdd a macro to properly mask the bd_cnt field so that the value 32\nwill be properly masked and set to 0 in the bd_cnd field.\n\nWithout this patch, the out-of-range bd_cnt value will corrupt the\nTX BD and may cause TX timeout.\n\nThe next patch will check for values exceeding 32."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "baseScore": 8.6, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - bnxt_en is a datacenter NIC typically deployed on routing/bridging/VM hosts, where an unauthenticated remote peer's burst of segments is coalesced by GRO into an skb with 30+ fragments and forwarded out the bnxt port, reaching bnxt_start_xmit() with no linearization because the driver advertises NETIF_F_SG.\nAC:L - On a kernel built with CONFIG_MAX_SKB_FRAGS >= 30 (the configuration in which the flaw exists, used in BIG TCP deployments), the attacker reliably drives the fragment count simply by sending a sustained burst, with no race or memory-layout condition to win.\nPR:N - In the forwarding scenario the trigger is ordinary unauthenticated network traffic transiting the host; no credentials or local account are needed, and the locally-reachable variant requires only an unprivileged socket.\nUI:N - Transmission happens automatically as part of normal packet forwarding or socket I/O; no victim action is required.\nS:U - The malformed descriptor, ring desynchronization, and subsequent device reset are all confined to the host kernel and its NIC, within a single security authority.\nC:L - The mis-parsed bd_cnt makes the chip consume descriptors beyond those the driver posted, so stale ring entries pointing at already-unmapped buffers can be DMA'd and emitted onto the wire, exposing a bounded amount of freed kernel buffer content to the attacker's network.\nI:L - The corrupted bd_cnt and length-hint bits cause mis-framed and truncated frames to be placed on the wire, and the resulting completion desync leads to dma_unmap calls with mismatched address/length against buffers the NIC still owns.\nA:H - The commit states the out-of-range bd_cnt corrupts the TX BD and causes TX timeout; the desynchronized completion path hits WARN_ON_ONCE(1) in bnxt_sched_reset_txr() and queues BNXT_RESET_TASK_SP_EVENT, forcing a full device reset and repeatable loss of network connectivity (an immediate panic on panic_on_warn systems)."}]}], "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", "drivers/net/ethernet/broadcom/bnxt/bnxt.h", "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"], "versions": [{"version": "3948b05950fdd64002a5f182c65ba5cf2d53cf71", "lessThan": "9ee185e0f15594017a6f1a191ebe6630cfea5f74", "status": "affected", "versionType": "git"}, {"version": "3948b05950fdd64002a5f182c65ba5cf2d53cf71", "lessThan": "f60b41b815826f15c4d0323f923f398c423178d0", "status": "affected", "versionType": "git"}, {"version": "3948b05950fdd64002a5f182c65ba5cf2d53cf71", "lessThan": "107b25db61122d8f990987895c2912927b8b6e3f", "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", "drivers/net/ethernet/broadcom/bnxt/bnxt.h", "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14.2", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15", "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": "6.4", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.14.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9ee185e0f15594017a6f1a191ebe6630cfea5f74"}, {"url": "https://git.kernel.org/stable/c/f60b41b815826f15c4d0323f923f398c423178d0"}, {"url": "https://git.kernel.org/stable/c/107b25db61122d8f990987895c2912927b8b6e3f"}], "title": "bnxt_en: Mask the bd_cnt field in the TX BD properly", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/broadcom/bnxt/bnxt.c", "drivers/net/ethernet/broadcom/bnxt/bnxt.h", "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9ee185e0f15594017a6f1a191ebe6630cfea5f74", "status": "affected", "version": "3948b05950fdd64002a5f182c65ba5cf2d53cf71", "versionType": "git"}, {"lessThan": "f60b41b815826f15c4d0323f923f398c423178d0", "status": "affected", "version": "3948b05950fdd64002a5f182c65ba5cf2d53cf71", "versionType": "git"}, {"lessThan": "107b25db61122d8f990987895c2912927b8b6e3f", "status": "affected", "version": "3948b05950fdd64002a5f182c65ba5cf2d53cf71", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/broadcom/bnxt/bnxt.c", "drivers/net/ethernet/broadcom/bnxt/bnxt.h", "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.4"}, {"lessThan": "6.4", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.14.*", "status": "unaffected", "version": "6.14.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.15", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C226DDBC-3E96-4B0C-9791-77DE3AE5D84B", "versionEndExcluding": "6.14.2", "versionStartIncluding": "6.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Mask the bd_cnt field in the TX BD properly\n\nThe bd_cnt field in the TX BD specifies the total number of BDs for\nthe TX packet. The bd_cnt field has 5 bits and the maximum number\nsupported is 32 with the value 0.\n\nCONFIG_MAX_SKB_FRAGS can be modified and the total number of SKB\nfragments can approach or exceed the maximum supported by the chip.\nAdd a macro to properly mask the bd_cnt field so that the value 32\nwill be properly masked and set to 0 in the bd_cnd field.\n\nWithout this patch, the out-of-range bd_cnt value will corrupt the\nTX BD and may cause TX timeout.\n\nThe next patch will check for values exceeding 32."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bnxt_en: Enmascarar correctamente el campo bd_cnt en el TX BD El campo bd_cnt en el TX BD especifica el n\u00famero total de BD para el paquete TX. El campo bd_cnt tiene 5 bits y el n\u00famero m\u00e1ximo admitido es 32 con el valor 0. CONFIG_MAX_SKB_FRAGS se puede modificar y el n\u00famero total de fragmentos SKB puede acercarse o superar el m\u00e1ximo admitido por el chip. Agregue una macro para enmascarar correctamente el campo bd_cnt para que el valor 32 se enmascare correctamente y se establezca en 0 en el campo bd_cnd. Sin este parche, el valor bd_cnt fuera de rango corromper\u00e1 el TX BD y puede causar tiempo de espera de TX. El siguiente parche verificar\u00e1 los valores que excedan 32."}], "id": "CVE-2025-22108", "lastModified": "2026-09-07T16:17:27.353", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "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"}]}, "published": "2025-04-16T15:16:05.083", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/107b25db61122d8f990987895c2912927b8b6e3f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9ee185e0f15594017a6f1a191ebe6630cfea5f74"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f60b41b815826f15c4d0323f923f398c423178d0"}], "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: bnxt_en: Mask the bd_cnt field in the TX BD properly", "id": "2360268", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2360268"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbnxt_en: Mask the bd_cnt field in the TX BD properly\nThe bd_cnt field in the TX BD specifies the total number of BDs for\nthe TX packet. The bd_cnt field has 5 bits and the maximum number\nsupported is 32 with the value 0.\nCONFIG_MAX_SKB_FRAGS can be modified and the total number of SKB\nfragments can approach or exceed the maximum supported by the chip.\nAdd a macro to properly mask the bd_cnt field so that the value 32\nwill be properly masked and set to 0 in the bd_cnd field.\nWithout this patch, the out-of-range bd_cnt value will corrupt the\nTX BD and may cause TX timeout.\nThe next patch will check for values exceeding 32."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, prevent module bnxt_en from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically."}, "name": "CVE-2025-22108", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Out of support scope", "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": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-04-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-22108\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-22108\nhttps://lore.kernel.org/linux-cve-announce/2025041623-CVE-2025-22108-39f0@gregkh/T"], "statement": "Only local user can trigger this bug. Need to modify the value of CONFIG_MAX_SKB_FRAGS to trigger it. For the Red Hat Enterprise Linux with the default value of the CONFIG_MAX_SKB_FRAGS would be complex to trigger. The security impact is limited to the deny of service (if would be possible to trigger it).", "threat_severity": "Moderate"}

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