{"id":82513,"date":"2026-07-24T19:01:21","date_gmt":"2026-07-24T15:31:21","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-64253-kernel-fork-clear-pf_block_ts-in-copy_process\/"},"modified":"2026-07-24T19:01:21","modified_gmt":"2026-07-24T15:31:21","slug":"cve-2026-64253-kernel-fork-clear-pf_block_ts-in-copy_process","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-64253-kernel-fork-clear-pf_block_ts-in-copy_process\/","title":{"rendered":"CVE-2026-64253 &#8211; kernel\/fork: clear PF_BLOCK_TS in copy_process()"},"content":{"rendered":"<p>CVE ID :CVE-2026-64253<\/p>\n<p>  Published : July 24, 2026, 3:31 p.m. | 19\u00a0minutes ago<\/p>\n<p>  Description :In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>kernel\/fork: clear PF_BLOCK_TS in copy_process()<\/p>\n<p>PF_BLOCK_TS is only set in blk_time_get_ns() when current-&gt;plug is<br \/>\nnon-NULL, and blk_finish_plug() clears it via __blk_flush_plug()<br \/>\nbefore NULLing the plug pointer.  copy_process() breaks the<br \/>\ninvariant by inheriting PF_BLOCK_TS from the parent while resetting<br \/>\nthe child&#8217;s plug to NULL.<\/p>\n<p>Clear PF_BLOCK_TS alongside that assignment so callers can rely on<br \/>\n&#8220;PF_BLOCK_TS set implies current-&gt;plug != NULL&#8221; and dereference<br \/>\ncurrent-&gt;plug unguarded.<\/p>\n<p>  Severity: 0.0 | NA<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-64253 Published : July 24, 2026, 3:31 p.m. | 19\u00a0minutes ago Description :In the Linux kernel, the following vulnerability has been resolved: kernel\/fork: clear PF_BLOCK_TS in copy_process() PF_BLOCK_TS is only set in blk_time_get_ns() when current-&gt;plug is non-NULL, and blk_finish_plug() clears it via __blk_flush_plug() before NULLing the plug pointer. copy_process() breaks the invariant by &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-82513","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82513","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=82513"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82513\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82513"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82513"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82513"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}