{"id":"CVE-2025-68770","revision":null,"records":[{"revision":"092377bfadcf4c43935928c6a5d5c6b9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-68770","aliases":[],"title":"bnxt_en: Fix XDP_TX path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Fix XDP_TX path\n\nFor XDP_TX action in bnxt_rx_xdp(), clearing of the event flags is not\ncorrect.  __bnxt_poll_work() -> bnxt_rx_pkt() -> bnxt_rx_xdp() may be\nlooping within NAPI and some event flags may be set in earlier\niterations.  In particular, if BNXT_TX_EVENT is set earlier indicating\nsome XDP_TX packets are ready and pending, it will be cleared if it is\nXDP_TX action again.  Normally, we will set BNXT_TX_EVENT again when we\nsuccessfully call __bnxt_xmit_xdp().  But if the TX ring has no more\nroom, the flag will not be set.  This will cause the TX producer to be\nahead but the driver will not hit the TX doorbell.\n\nFor multi-buf XDP_TX, there is no need to clear the event flags and set\nBNXT_AGG_EVENT.  The BNXT_AGG_EVENT flag should have been set earlier in\nbnxt_rx_pkt().\n\nThe visible symptom of this is that the RX ring associated with the\nTX XDP ring will eventually become empty and all packets will be dropped.\nBecause this condition will cause the driver to not refill the RX ring\nseeing that the TX ring has forever pending XDP_TX packets.\n\nThe fix is to only clear BNXT_RX_EVENT when we have successfully\ncalled __bnxt_xmit_xdp().","state":0,"publishedAt":"2026-01-13T15:28:48.604+00:00","modifiedAt":"2026-10-19T18:05:06.691+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7f0a168b0441ef7fd6b46563efb2706c58ac2a4c\",\n                            \"lessThan\": \"4b83902a1e67ff327ab5c6c65021a03e72c081d6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7f0a168b0441ef7fd6b46563efb2706c58ac2a4c\",\n                            \"lessThan\": \"f17e0c1208485b24d61271bc1ddc8f2087e71561\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7f0a168b0441ef7fd6b46563efb2706c58ac2a4c\",\n                            \"lessThan\": \"0373d5c387f24de749cc22e694a14b3a7c7eb515\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.64\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.3\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/4b83902a1e67ff327ab5c6c65021a03e72c081d6","https://git.kernel.org/stable/c/f17e0c1208485b24d61271bc1ddc8f2087e71561","https://git.kernel.org/stable/c/0373d5c387f24de749cc22e694a14b3a7c7eb515"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-68770","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-68770","identifiers":["CVE-2025-68770"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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