CVE-2026-64075: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: fprobe: Fix unregister_fprobe() to wait for RCU grace period Commit 4346ba1604093 ("fprobe: Rewrite fprobe on function-graph tracer") changed fprobe to register struct fprobe to an rcu-hlist, but it forgot to wait for RCU GP. Thus there can be use-after-free if the fprobe is released right after unregistering. This can be happened on fprobe event and sample module code. To fix this issue, add synchronize_rcu() in unregister_fprobe(). Note that BPF is OK because fprobe is used as a part of bpf_kprobe_multi_link. This unregisters its fprobe in bpf_kprobe_multi_link_release() and it is deallocated via bpf_kprobe_multi_link_dealloc(), which is invoked from bpf_link_defer_dealloc_rcu_gp() RCU callback. For BPF, this also introduced unregister_fprobe_async() which does NOT wait for RCU grace priod.

Засегнати продукти

• Linux Linux: 4346ba1604093305a287e08eb465a9c15ba05b80 преди 56b4cfcf1518245493c60fd39c56978f508f1816; 4346ba1604093305a287e08eb465a9c15ba05b80 преди a4f6a9005ed6cfd360ef2520430927f05f92ffb0; 4346ba1604093305a287e08eb465a9c15ba05b80 преди 657b594b2084b39a4bc6d8493aa2140cb00cea49
• Linux Linux: 6.14; преди 6.14; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-64075
• https://nvd.nist.gov/vuln/detail/CVE-2026-64075
• https://git.kernel.org/stable/c/56b4cfcf1518245493c60fd39c56978f508f1816
• https://git.kernel.org/stable/c/a4f6a9005ed6cfd360ef2520430927f05f92ffb0
• https://git.kernel.org/stable/c/657b594b2084b39a4bc6d8493aa2140cb00cea49