{"id":"CVE-2026-99028","revision":null,"records":[{"revision":"de220e6d16c64de3baf59849bf174801","observedAt":"2026-10-23T16:01:20.601+00:00","statement":{"source":"cve-program","id":"CVE-2026-99028","aliases":[],"title":"net: xilinx: axienet: Free outstanding DMA buffers on dmaengine stop","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: xilinx: axienet: Free outstanding DMA buffers on dmaengine stop\n\nIn the dmaengine path the driver pre-submits RX buffers and holds\nin-flight TX buffers whose SKBs are DMA-mapped by the driver and freed\nonly in the completion callbacks. On ndo_stop() dmaengine_terminate_sync()\naborts these descriptors without running their callbacks, and the driver\nthen frees only the ring shells, leaking every SKB still owned by the\nengine and its DMA mapping on each ifdown. With 128 RX buffers pre-posted\nper channel, the mapping leak can eventually exhaust a limited IOMMU\naperture.\n\nClear the slot's skb in the TX and RX callbacks so a non-NULL skb marks a\nslot that still owns a live, DMA-mapped buffer, and on stop unmap and free\nevery such buffer.\n\naxienet_dma_rx_cb() runs from the DMA tasklet and re-arms the RX ring on\neach completion, so it can race axienet_stop(): a completion may submit a\nfresh buffer after dmaengine_terminate_sync() has returned, leaving the\nchannel armed with a buffer the teardown then frees while the engine may\nstill write into it (dma_release_channel() does not stop it either). Add a\nlock that axienet_dma_rx_cb() holds across the @stopping check and the\nresubmit, and axienet_stop() holds to set @stopping before terminating.\nOnce @stopping is set no callback can arm a new buffer, and any armed just\nbefore is aborted by the terminate, so teardown only frees buffers the\nengine no longer owns.","state":0,"publishedAt":"2026-10-23T12:21:20.294+00:00","modifiedAt":"2026-10-23T12:21:20.294+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/xilinx/xilinx_axienet.h\",\n                        \"drivers/net/ethernet/xilinx/xilinx_axienet_main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6a91b846af85a24241decd686269e8e038eb13d1\",\n                            \"lessThan\": \"079396129da5e7cb40ca0920aa1b9525bef6097c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6a91b846af85a24241decd686269e8e038eb13d1\",\n                            \"lessThan\": \"eececf7c3a679d9c08175ad6bacbc8c31848f5af\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6a91b846af85a24241decd686269e8e038eb13d1\",\n                            \"lessThan\": \"5e5cf3ad7c099ff86ea9e422cddb25a2e5317b58\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6a91b846af85a24241decd686269e8e038eb13d1\",\n                            \"lessThan\": \"bcf2573a68a808a5b54cadafa72b6672e662c2bf\",\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/xilinx/xilinx_axienet.h\",\n                        \"drivers/net/ethernet/xilinx/xilinx_axienet_main.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\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.58\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.11\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/079396129da5e7cb40ca0920aa1b9525bef6097c","https://git.kernel.org/stable/c/eececf7c3a679d9c08175ad6bacbc8c31848f5af","https://git.kernel.org/stable/c/5e5cf3ad7c099ff86ea9e422cddb25a2e5317b58","https://git.kernel.org/stable/c/bcf2573a68a808a5b54cadafa72b6672e662c2bf"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99028","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-99028","identifiers":["CVE-2026-99028"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-28T03:51:33.9437802+00:00","complete":true,"records":1760,"lastAttemptAt":"2026-10-28T03:51:33.9437802+00:00","lastSuccessAt":"2026-10-28T03:51:34.0961236+00:00","error":null,"lastVerifiedAt":"2026-10-28T03:51:34.0961246+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-d2186f400c54d65f61687f78bb1a00d184d2e215877d0194d7ed70caee809a44-5e002664ec8433c1a0afdeba204aeae5ffbe828d6bbdb74ae37529eb2b6b1b6f","complete":true,"records":415510,"lastAttemptAt":"2026-10-28T03:51:32.842736+00:00","lastSuccessAt":"2026-10-28T03:51:32.8041674+00:00","error":null,"lastVerifiedAt":"2026-10-28T03:51:32.842736+00:00","snapshotPublishedAt":"2026-10-28T03:24:13+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-233b167da0484950a642d70fecbb2f8f","complete":false,"records":9694,"lastAttemptAt":"2026-10-28T04:03:09.0504101+00:00","lastSuccessAt":"2026-10-28T04:03:09.046+00:00","error":"18 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-10-28T04:03:09.046+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":4982,"expectedIdentifiers":13514,"failedIdentifiers":18},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-28T03:51:33.9437802+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-28T03:51:33.9437802+00:00","lastSuccessAt":"2026-10-28T03:51:34.0971299+00:00","error":null,"lastVerifiedAt":"2026-10-28T03:51:34.09713+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-8d16a738328646698f9217d8ea11893c","complete":true,"records":13449,"lastAttemptAt":"2026-10-28T03:51:36.4785313+00:00","lastSuccessAt":"2026-10-27T22:48:29.491+00:00","error":null,"lastVerifiedAt":"2026-10-27T22:48:29.491+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13514,"expectedIdentifiers":13514,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-f7cb12508d9e6a348c8a60f772ed85529cc80cd2ff853da1099b57754b20e943","complete":true,"records":9790,"lastAttemptAt":"2026-10-28T03:51:33.4681471+00:00","lastSuccessAt":"2026-10-27T21:49:03.9756799+00:00","error":null,"lastVerifiedAt":"2026-10-28T03:51:33.4681471+00:00","snapshotPublishedAt":"2026-10-27T21:48:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-72e5e79de0026dd0562d40734074a2236a06886643d67182b8381eaee757dbf7","complete":true,"records":1966,"lastAttemptAt":"2026-10-28T03:51:32.8879793+00:00","lastSuccessAt":"2026-10-27T21:46:38.0277323+00:00","error":null,"lastVerifiedAt":"2026-10-28T03:51:32.8879793+00:00","snapshotPublishedAt":"2026-10-27T21:18:15+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-3a5b306d60fc44677a03a8afc99d87e6c5402770ef68d560f94a8c3ad3802b75","complete":true,"records":3001,"lastAttemptAt":"2026-10-28T03:51:33.8464162+00:00","lastSuccessAt":"2026-10-27T16:45:49.0050993+00:00","error":null,"lastVerifiedAt":"2026-10-28T03:51:33.8464162+00:00","snapshotPublishedAt":"2026-10-27T16:33:43+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-5f3141cf1b985319fe2c9d9b1b1aab03f442c3a2272590c3c2e44d5d3d31bfb3","complete":true,"records":230854,"lastAttemptAt":"2026-10-28T03:51:33.3608683+00:00","lastSuccessAt":"2026-10-28T02:53:16.9493663+00:00","error":null,"lastVerifiedAt":"2026-10-28T03:51:33.3608683+00:00","snapshotPublishedAt":"2026-10-28T02:33:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}