{"api_version":"1","generated_at":"2026-08-22T22:42:04+00:00","cve":"CVE-2026-74622","urls":{"html":"https://cve.report/CVE-2026-74622","api":"https://cve.report/api/cve/CVE-2026-74622.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74622","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74622"},"summary":{"title":"net: atlantic: free RX pages of consumed but not refilled buffers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: free RX pages of consumed but not refilled buffers\n\naq_ring_rx_deinit() only walks [sw_head, sw_tail), the region posted to\nhardware. Since the page reuse strategy was added, a cleaned RX buffer\nkeeps its page (and its DMA mapping) in the ring for reuse, and refill\nis batched: aq_ring_rx_fill() returns early until AQ_CFG_RX_REFILL_THRES\nslots are free. Slots that were consumed but not yet reposted therefore\nsit in the complementary [sw_tail, sw_head) gap with a live page, and\nthe deinit walk never visits them: up to a refill batch worth of pages\nand DMA mappings leak on every interface down.\n\nWalk the whole ring instead and release whatever is still there. Also\nbail out if the buffer ring is already gone: a partial\naq_ptp_ring_alloc() failure frees the ring but leaves aq_nic set, so\naq_ptp_ring_deinit() still gets here on the unwind path.","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/24d87dc28ddd3771dd0e88719209811809729439","name":"https://git.kernel.org/stable/c/24d87dc28ddd3771dd0e88719209811809729439","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/64e1346bc66b947eb80b848e4c8d9828ba50e0fe","name":"https://git.kernel.org/stable/c/64e1346bc66b947eb80b848e4c8d9828ba50e0fe","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ff451bc4290b79c04f1c5cfa928d448f9d47ecf5","name":"https://git.kernel.org/stable/c/ff451bc4290b79c04f1c5cfa928d448f9d47ecf5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/30c473ea097ef0c93b064281b3e295c97d17e28b","name":"https://git.kernel.org/stable/c/30c473ea097ef0c93b064281b3e295c97d17e28b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/782cc40b7ade4614a8aec0b948b8cf95c69f8d4b","name":"https://git.kernel.org/stable/c/782cc40b7ade4614a8aec0b948b8cf95c69f8d4b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1e58b0bab40dcbdfc04acaba6a221d40801c3770","name":"https://git.kernel.org/stable/c/1e58b0bab40dcbdfc04acaba6a221d40801c3770","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/17c99dd86f169c7a3e73d6778e79ef5b1ed3ceac","name":"https://git.kernel.org/stable/c/17c99dd86f169c7a3e73d6778e79ef5b1ed3ceac","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e8e7471ef686b6c002218fee9671cc61992ae01a","name":"https://git.kernel.org/stable/c/e8e7471ef686b6c002218fee9671cc61992ae01a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74622","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74622","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86 1e58b0bab40dcbdfc04acaba6a221d40801c3770 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86 30c473ea097ef0c93b064281b3e295c97d17e28b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86 17c99dd86f169c7a3e73d6778e79ef5b1ed3ceac git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86 ff451bc4290b79c04f1c5cfa928d448f9d47ecf5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.216 5.15.* 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"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1e58b0bab40dcbdfc04acaba6a221d40801c3770","status":"affected","version":"46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86","versionType":"git"},{"lessThan":"30c473ea097ef0c93b064281b3e295c97d17e28b","status":"affected","version":"46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86","versionType":"git"},{"lessThan":"17c99dd86f169c7a3e73d6778e79ef5b1ed3ceac","status":"affected","version":"46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86","versionType":"git"},{"lessThan":"ff451bc4290b79c04f1c5cfa928d448f9d47ecf5","status":"affected","version":"46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86","versionType":"git"},{"lessThan":"64e1346bc66b947eb80b848e4c8d9828ba50e0fe","status":"affected","version":"46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86","versionType":"git"},{"lessThan":"782cc40b7ade4614a8aec0b948b8cf95c69f8d4b","status":"affected","version":"46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86","versionType":"git"},{"lessThan":"24d87dc28ddd3771dd0e88719209811809729439","status":"affected","version":"46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86","versionType":"git"},{"lessThan":"e8e7471ef686b6c002218fee9671cc61992ae01a","status":"affected","version":"46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/aquantia/atlantic/aq_ring.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.2"},{"lessThan":"5.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.265","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.216","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":"5.10.265","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.216","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.183","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.152","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.104","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.45","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.9","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"5.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: free RX pages of consumed but not refilled buffers\n\naq_ring_rx_deinit() only walks [sw_head, sw_tail), the region posted to\nhardware. Since the page reuse strategy was added, a cleaned RX buffer\nkeeps its page (and its DMA mapping) in the ring for reuse, and refill\nis batched: aq_ring_rx_fill() returns early until AQ_CFG_RX_REFILL_THRES\nslots are free. Slots that were consumed but not yet reposted therefore\nsit in the complementary [sw_tail, sw_head) gap with a live page, and\nthe deinit walk never visits them: up to a refill batch worth of pages\nand DMA mappings leak on every interface down.\n\nWalk the whole ring instead and release whatever is still there. Also\nbail out if the buffer ring is already gone: a partial\naq_ptp_ring_alloc() failure frees the ring but leaves aq_nic set, so\naq_ptp_ring_deinit() still gets here on the unwind path."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:32:05.719Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1e58b0bab40dcbdfc04acaba6a221d40801c3770"},{"url":"https://git.kernel.org/stable/c/30c473ea097ef0c93b064281b3e295c97d17e28b"},{"url":"https://git.kernel.org/stable/c/17c99dd86f169c7a3e73d6778e79ef5b1ed3ceac"},{"url":"https://git.kernel.org/stable/c/ff451bc4290b79c04f1c5cfa928d448f9d47ecf5"},{"url":"https://git.kernel.org/stable/c/64e1346bc66b947eb80b848e4c8d9828ba50e0fe"},{"url":"https://git.kernel.org/stable/c/782cc40b7ade4614a8aec0b948b8cf95c69f8d4b"},{"url":"https://git.kernel.org/stable/c/24d87dc28ddd3771dd0e88719209811809729439"},{"url":"https://git.kernel.org/stable/c/e8e7471ef686b6c002218fee9671cc61992ae01a"}],"title":"net: atlantic: free RX pages of consumed but not refilled buffers","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74622","datePublished":"2026-08-22T15:32:05.719Z","dateReserved":"2026-08-15T05:44:03.921Z","dateUpdated":"2026-08-22T15:32:05.719Z","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":"74622","Ordinal":"1","Title":"net: atlantic: free RX pages of consumed but not refilled buffer","CVE":"CVE-2026-74622","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74622","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: free RX pages of consumed but not refilled buffers\n\naq_ring_rx_deinit() only walks [sw_head, sw_tail), the region posted to\nhardware. Since the page reuse strategy was added, a cleaned RX buffer\nkeeps its page (and its DMA mapping) in the ring for reuse, and refill\nis batched: aq_ring_rx_fill() returns early until AQ_CFG_RX_REFILL_THRES\nslots are free. Slots that were consumed but not yet reposted therefore\nsit in the complementary [sw_tail, sw_head) gap with a live page, and\nthe deinit walk never visits them: up to a refill batch worth of pages\nand DMA mappings leak on every interface down.\n\nWalk the whole ring instead and release whatever is still there. Also\nbail out if the buffer ring is already gone: a partial\naq_ptp_ring_alloc() failure frees the ring but leaves aq_nic set, so\naq_ptp_ring_deinit() still gets here on the unwind path.","Type":"Description","Title":"net: atlantic: free RX pages of consumed but not refilled buffer"}]}}}