CVE ID :CVE-2026-46333<\/p>\n
Published : May 15, 2026, 12:58 p.m. | 59\u00a0minutes ago<\/p>\n
Description :In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ptrace: slightly saner ‘get_dumpable()’ logic<\/p>\n
The ‘dumpability’ of a task is fundamentally about the memory image of
\nthe task – the concept comes from whether it can core dump or not – and
\nmakes no sense when you don’t have an associated mm.<\/p>\n
And almost all users do in fact use it only for the case where the task
\nhas a mm pointer.<\/p>\n
But we have one odd special case: ptrace_may_access() uses ‘dumpable’ to
\ncheck various other things entirely independently of the MM (typically
\nexplicitly using flags like PTRACE_MODE_READ_FSCREDS). Including for
\nthreads that no longer have a VM (and maybe never did, like most kernel
\nthreads).<\/p>\n
It’s not what this flag was designed for, but it is what it is.<\/p>\n
The ptrace code does check that the uid\/gid matches, so you do have to
\nbe uid-0 to see kernel thread details, but this means that the
\ntraditional “drop capabilities” model doesn’t make any difference for
\nthis all.<\/p>\n
Make it all make a *bit* more sense by saying that if you don’t have a
\nMM pointer, we’ll use a cached “last dumpability” flag if the thread
\never had a MM (it will be zero for kernel threads since it is never
\nset), and require a proper CAP_SYS_PTRACE capability to override.<\/p>\n
Severity: 0.0 | NA<\/p>\n
Visit the link for more details, such as CVSS details, affected products, timeline, and more…\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"
CVE ID :CVE-2026-46333 Published : May 15, 2026, 12:58 p.m. | 59\u00a0minutes ago Description :In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner ‘get_dumpable()’ logic The ‘dumpability’ of a task is fundamentally about the memory image of the task – the concept comes from whether it can core dump or not …<\/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-78513","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78513","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=78513"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78513\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=78513"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=78513"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=78513"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}