bpf: Mark tracing_multi trampolines as ftrace managed
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 7.2.6
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Mark tracing_multi trampolines as ftrace managed Since tracing_multi link does not set ftrace_managed, it would fail to release the tracing_multi link when attaching tracing_multi link and then attaching fentry link. [ 3.714215] WARNING: kernel/bpf/trampoline.c:1727 at bpf_trampoline_multi_detach+0x20b/0x240, CPU#1: test_progs/97 ... [ 3.733170] bpf_tracing_multi_link_release+0x14/0x30 [ 3.733890] bpf_link_free+0x58/0x130 [ 3.734414] bpf_link_release+0x23/0x30 Fix it by setting 'ftrace_managed = true' in register_fentry_multi().
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From aef4dfa790b22d8052cfb78044eadbe03c876c39 · fixed in 280145253fd38fa975cc04963ddaf74c7f415011; From aef4dfa790b22d8052cfb78044eadbe03c876c39 · fixed in 30bdd6d1384d894931f113eb595636092d8e650c
- Linux Linux
7.2
- KernelLinux
From 7.2.0 · fixed in 7.2.6