{"id":82541,"date":"2026-07-25T12:44:47","date_gmt":"2026-07-25T09:14:47","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-64522-net-mlx5e-fix-eswitch-mode-block-underflow-on-ipsec-acquire-sa\/"},"modified":"2026-07-25T12:44:47","modified_gmt":"2026-07-25T09:14:47","slug":"cve-2026-64522-net-mlx5e-fix-eswitch-mode-block-underflow-on-ipsec-acquire-sa","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-64522-net-mlx5e-fix-eswitch-mode-block-underflow-on-ipsec-acquire-sa\/","title":{"rendered":"CVE-2026-64522 &#8211; net\/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA"},"content":{"rendered":"<p>CVE ID :CVE-2026-64522<\/p>\n<p>  Published : July 25, 2026, 9:14 a.m. | 37\u00a0minutes ago<\/p>\n<p>  Description :In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net\/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA<\/p>\n<p>mlx5e_xfrm_add_state() handles acquire-flow temporary SAs by allocating<br \/>\nsoftware state and skipping hardware offload setup.<\/p>\n<p>That path jumps to the common success label before taking the eswitch mode<br \/>\nblock. After tunnel-mode validation was moved earlier, the common success<br \/>\nlabel unconditionally calls mlx5_eswitch_unblock_mode(). For acquire SAs,<br \/>\nthis decrements esw-&gt;offloads.num_block_mode without a matching increment.<\/p>\n<p>Return directly after installing the acquire SA offload handle, so only the<br \/>\npaths that successfully called mlx5_eswitch_block_mode() call the matching<br \/>\nunblock.<\/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-2026-64522 Published : July 25, 2026, 9:14 a.m. | 37\u00a0minutes ago Description :In the Linux kernel, the following vulnerability has been resolved: net\/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA mlx5e_xfrm_add_state() handles acquire-flow temporary SAs by allocating software state and skipping hardware offload setup. That path jumps to the common success &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-82541","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82541","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=82541"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82541\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}