{"id":68651,"date":"2025-08-22T20:32:38","date_gmt":"2025-08-22T17:02:38","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2025-38616-linux-tls-ulp-data-disappearance-out-of-bounds-read\/"},"modified":"2025-08-22T20:32:38","modified_gmt":"2025-08-22T17:02:38","slug":"cve-2025-38616-linux-tls-ulp-data-disappearance-out-of-bounds-read","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2025-38616-linux-tls-ulp-data-disappearance-out-of-bounds-read\/","title":{"rendered":"CVE-2025-38616 &#8211; &#8220;Linux TLS ULP Data Disappearance Out-of-Bounds Read&#8221;"},"content":{"rendered":"<p><strong>CVE ID : <\/strong>CVE-2025-38616<br \/>\n<br \/>\n<strong>Published : <\/strong> Aug. 22, 2025, 2:15 p.m. | 2\u00a0hours, 11\u00a0minutes ago<br \/>\n<br \/>\n<strong>Description : <\/strong>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tls: handle data disappearing from under the TLS ULP<\/p>\n<p>TLS expects that it owns the receive queue of the TCP socket.<br \/>\nThis cannot be guaranteed in case the reader of the TCP socket<br \/>\nentered before the TLS ULP was installed, or uses some non-standard<br \/>\nread API (eg. zerocopy ones). Replace the WARN_ON() and a buggy<br \/>\nearly exit (which leaves anchor pointing to a freed skb) with real<br \/>\nerror handling. Wipe the parsing state and tell the reader to retry.<\/p>\n<p>We already reload the anchor every time we (re)acquire the socket lock,<br \/>\nso the only condition we need to avoid is an out of bounds read<br \/>\n(not having enough bytes in the socket for previously parsed record len).<\/p>\n<p>If some data was read from under TLS but there&#8217;s enough in the queue<br \/>\nwe&#8217;ll reload and decrypt what is most likely not a valid TLS record.<br \/>\nLeading to some undefined behavior from TLS perspective (corrupting<br \/>\na stream? missing an alert? missing an attack?) but no kernel crash<br \/>\nshould take place.<br \/>\n<br \/>\n<strong>Severity:<\/strong> 0.0 | NA<br \/>\n<br \/>\nVisit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID : CVE-2025-38616 Published : Aug. 22, 2025, 2:15 p.m. | 2\u00a0hours, 11\u00a0minutes ago Description : In the Linux kernel, the following vulnerability has been resolved: tls: handle data disappearing from under the TLS ULP TLS expects that it owns the receive queue of the TCP socket. This cannot be guaranteed in case the &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-68651","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/68651","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=68651"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/68651\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=68651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=68651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=68651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}