{"id":5375,"date":"2026-09-04T18:47:47","date_gmt":"2026-09-04T10:47:47","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68192"},"modified":"2026-09-04T18:47:47","modified_gmt":"2026-09-04T10:47:47","slug":"cve-2026-68192","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68192","title":{"rendered":"CVE-2026-68192 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: make"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>wifi: brcmfmac: make release_scratchbuffers idempotent<\/p>\n<p>brcmf_pcie_release_scratchbuffers() frees the shared.scratch and<br \/>\nshared.ringupd DMA buffers with dma_free_coherent() but does not clear<br \/>\nthe pointers afterwards, unlike the sibling release_ringbuffers() which<br \/>\nNULLs commonrings\/flowrings\/idxbuf on release.<\/p>\n<p>Both the bus_reset .reset callback (brcmf_pcie_reset) and<br \/>\nbrcmf_pcie_remove() call release_scratchbuffers.  When reset teardown<br \/>\nhas run before removal, remove&#8217;s own teardown would call<br \/>\ndma_free_coherent() a second time on the already-freed DMA allocation.<\/p>\n<p>NULL the pointers after free, matching release_ringbuffers(), so a later<br \/>\nrelease observes that the allocation has already been released.  This<br \/>\npatch makes repeated sequential release safe; the reset-work lifetime is<br \/>\nhandled separately by the following patch.<\/p>\n<p>This issue was found by an in-house static analysis tool.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>wifi: brcmfmac: make release_scratchbuffers idempotent<\/p>\n<p>brcmf_pcie_release_scratchbuffers() frees the shared.scratch and<br \/>\nshared.rin<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5375","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5375","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}