{"api_version":"1","generated_at":"2026-08-23T03:49:23+00:00","cve":"CVE-2026-74623","urls":{"html":"https://cve.report/CVE-2026-74623","api":"https://cve.report/api/cve/CVE-2026-74623.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74623","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74623"},"summary":{"title":"net: atlantic: free stranded TX buffers on ring deinit","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: free stranded TX buffers on ring deinit\n\naq_vec_deinit() drains the TX rings with a single aq_ring_tx_clean()\ncall, which frees at most AQ_CFG_TX_CLEAN_BUDGET (256) descriptors and\nstops at hw_head, which no longer moves once aq_vec_stop() has stopped\nthe hardware and NAPI. Completed descriptors beyond the budget and\neverything still posted in [hw_head, sw_tail) keep their skb or\nxdp_frame when the interface goes down: aq_vec_ring_free() then frees\nthe buffer ring and the references are lost for good.\n\nToday this is a silent memory leak on every interface down under\nTX/XDP_TX load. With the conversion of the RX path to page_pool posted\nfor net-next it becomes much more visible: XDP_TX frames carry fragment\nreferences on the RX ring's page_pool, so a single stranded frame keeps\nthe pool's inflight count above zero forever. page_pool_destroy() then\nnever completes, the pool is leaked together with its pages, and\n\"page_pool_release_retry() stalled pool shutdown\" is warned every 60\nseconds from that point on, on every ifdown, XDP detach or ring resize\nunder XDP_TX load.\n\nBring back aq_ring_tx_deinit() as it was before the removal and use it\nfor teardown again, with one extension: TX rings can hold xdp_frames\nnowadays, so release those too. They are returned with\nxdp_return_frame() since this runs in process context.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-22 16:16:35","updated_at":"2026-08-22 16:16:35"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c","name":"https://git.kernel.org/stable/c/7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/307d80193b4a4a75b8dc4e0d3162be3755abbed7","name":"https://git.kernel.org/stable/c/307d80193b4a4a75b8dc4e0d3162be3755abbed7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3447641d361dcc5511841d986ad4d849b2900d9b","name":"https://git.kernel.org/stable/c/3447641d361dcc5511841d986ad4d849b2900d9b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/452636ea5410a96e02ebaaf80b21e3620b98e0dd","name":"https://git.kernel.org/stable/c/452636ea5410a96e02ebaaf80b21e3620b98e0dd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b13202d401e1a20fec89b0cda733dcbaf279f79d","name":"https://git.kernel.org/stable/c/b13202d401e1a20fec89b0cda733dcbaf279f79d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dd633280de7fdfd60dc4fcf63d04e2ad95b43269","name":"https://git.kernel.org/stable/c/dd633280de7fdfd60dc4fcf63d04e2ad95b43269","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74623","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74623","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb36bedf28be6d986bdbcfa375bab08ffa45efd8 307d80193b4a4a75b8dc4e0d3162be3755abbed7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb36bedf28be6d986bdbcfa375bab08ffa45efd8 7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb36bedf28be6d986bdbcfa375bab08ffa45efd8 3447641d361dcc5511841d986ad4d849b2900d9b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb36bedf28be6d986bdbcfa375bab08ffa45efd8 b13202d401e1a20fec89b0cda733dcbaf279f79d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb36bedf28be6d986bdbcfa375bab08ffa45efd8 dd633280de7fdfd60dc4fcf63d04e2ad95b43269 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb36bedf28be6d986bdbcfa375bab08ffa45efd8 452636ea5410a96e02ebaaf80b21e3620b98e0dd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.11","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.183 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.152 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.104 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.45 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.9 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/aquantia/atlantic/aq_ring.c","drivers/net/ethernet/aquantia/atlantic/aq_ring.h","drivers/net/ethernet/aquantia/atlantic/aq_vec.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"307d80193b4a4a75b8dc4e0d3162be3755abbed7","status":"affected","version":"eb36bedf28be6d986bdbcfa375bab08ffa45efd8","versionType":"git"},{"lessThan":"7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c","status":"affected","version":"eb36bedf28be6d986bdbcfa375bab08ffa45efd8","versionType":"git"},{"lessThan":"3447641d361dcc5511841d986ad4d849b2900d9b","status":"affected","version":"eb36bedf28be6d986bdbcfa375bab08ffa45efd8","versionType":"git"},{"lessThan":"b13202d401e1a20fec89b0cda733dcbaf279f79d","status":"affected","version":"eb36bedf28be6d986bdbcfa375bab08ffa45efd8","versionType":"git"},{"lessThan":"dd633280de7fdfd60dc4fcf63d04e2ad95b43269","status":"affected","version":"eb36bedf28be6d986bdbcfa375bab08ffa45efd8","versionType":"git"},{"lessThan":"452636ea5410a96e02ebaaf80b21e3620b98e0dd","status":"affected","version":"eb36bedf28be6d986bdbcfa375bab08ffa45efd8","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/aquantia/atlantic/aq_ring.c","drivers/net/ethernet/aquantia/atlantic/aq_ring.h","drivers/net/ethernet/aquantia/atlantic/aq_vec.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.11"},{"lessThan":"4.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.152","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.104","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.45","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.183","versionStartIncluding":"4.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.152","versionStartIncluding":"4.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.104","versionStartIncluding":"4.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.45","versionStartIncluding":"4.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.9","versionStartIncluding":"4.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"4.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: free stranded TX buffers on ring deinit\n\naq_vec_deinit() drains the TX rings with a single aq_ring_tx_clean()\ncall, which frees at most AQ_CFG_TX_CLEAN_BUDGET (256) descriptors and\nstops at hw_head, which no longer moves once aq_vec_stop() has stopped\nthe hardware and NAPI. Completed descriptors beyond the budget and\neverything still posted in [hw_head, sw_tail) keep their skb or\nxdp_frame when the interface goes down: aq_vec_ring_free() then frees\nthe buffer ring and the references are lost for good.\n\nToday this is a silent memory leak on every interface down under\nTX/XDP_TX load. With the conversion of the RX path to page_pool posted\nfor net-next it becomes much more visible: XDP_TX frames carry fragment\nreferences on the RX ring's page_pool, so a single stranded frame keeps\nthe pool's inflight count above zero forever. page_pool_destroy() then\nnever completes, the pool is leaked together with its pages, and\n\"page_pool_release_retry() stalled pool shutdown\" is warned every 60\nseconds from that point on, on every ifdown, XDP detach or ring resize\nunder XDP_TX load.\n\nBring back aq_ring_tx_deinit() as it was before the removal and use it\nfor teardown again, with one extension: TX rings can hold xdp_frames\nnowadays, so release those too. They are returned with\nxdp_return_frame() since this runs in process context."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:32:06.467Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/307d80193b4a4a75b8dc4e0d3162be3755abbed7"},{"url":"https://git.kernel.org/stable/c/7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c"},{"url":"https://git.kernel.org/stable/c/3447641d361dcc5511841d986ad4d849b2900d9b"},{"url":"https://git.kernel.org/stable/c/b13202d401e1a20fec89b0cda733dcbaf279f79d"},{"url":"https://git.kernel.org/stable/c/dd633280de7fdfd60dc4fcf63d04e2ad95b43269"},{"url":"https://git.kernel.org/stable/c/452636ea5410a96e02ebaaf80b21e3620b98e0dd"}],"title":"net: atlantic: free stranded TX buffers on ring deinit","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74623","datePublished":"2026-08-22T15:32:06.467Z","dateReserved":"2026-08-15T05:44:03.921Z","dateUpdated":"2026-08-22T15:32:06.467Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-22 16:16:35","lastModifiedDate":"2026-08-22 16:16:35","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74623","Ordinal":"1","Title":"net: atlantic: free stranded TX buffers on ring deinit","CVE":"CVE-2026-74623","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74623","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: free stranded TX buffers on ring deinit\n\naq_vec_deinit() drains the TX rings with a single aq_ring_tx_clean()\ncall, which frees at most AQ_CFG_TX_CLEAN_BUDGET (256) descriptors and\nstops at hw_head, which no longer moves once aq_vec_stop() has stopped\nthe hardware and NAPI. Completed descriptors beyond the budget and\neverything still posted in [hw_head, sw_tail) keep their skb or\nxdp_frame when the interface goes down: aq_vec_ring_free() then frees\nthe buffer ring and the references are lost for good.\n\nToday this is a silent memory leak on every interface down under\nTX/XDP_TX load. With the conversion of the RX path to page_pool posted\nfor net-next it becomes much more visible: XDP_TX frames carry fragment\nreferences on the RX ring's page_pool, so a single stranded frame keeps\nthe pool's inflight count above zero forever. page_pool_destroy() then\nnever completes, the pool is leaked together with its pages, and\n\"page_pool_release_retry() stalled pool shutdown\" is warned every 60\nseconds from that point on, on every ifdown, XDP detach or ring resize\nunder XDP_TX load.\n\nBring back aq_ring_tx_deinit() as it was before the removal and use it\nfor teardown again, with one extension: TX rings can hold xdp_frames\nnowadays, so release those too. They are returned with\nxdp_return_frame() since this runs in process context.","Type":"Description","Title":"net: atlantic: free stranded TX buffers on ring deinit"}]}}}