Riskcovery

CVE-2026-93111

bpf: Mark tracing_multi trampolines as ftrace managed

State
Published
Severity
7.8 High
Published
Sep 17, 2026
Updated
Oct 19, 2026
Reserved
Sep 17, 2026

Read the record on cve.org

Description

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().

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • aef4dfa790b22d8052cfb78044eadbe03c876c39 to before 280145253fd38fa975cc04963ddaf74c7f415011Affected
  • aef4dfa790b22d8052cfb78044eadbe03c876c39 to before 30bdd6d1384d894931f113eb595636092d8e650cAffected
LinuxLinux
  • 7.2Affected
  • before 7.2Not affected
  • 7.2.6 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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