CVE-2026-63864

bpf: Propagate error from visit_tailcall_insn

High · published July 19, 2026

CVSS v3.1
8.4
EPSS
0%
Percentile
7.1
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

bpf: Propagate error from visit_tailcall_insn

Commit e40f5a6bf88a ("bpf: correct stack liveness for tail calls") added

visit_tailcall_insn() but did not check its return value.

The record
Technical detail
CVSS v3.1
8.4 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00180 · 7.1th percentile
Published
2026-07-19T14:04Z
EPSS history
Timeline
  • 19 JUL 14:04Z
    bpf: Propagate error from visit_tailcall_insn
    cvelistv5