CVE-2021-20320CWE-200information-disclosure

CVE-2021-20320

Medium · published February 18, 2022

CVSS v3.1
5.5
EPSS
0%
Percentile
16.8
In the wild
Unconfirmed
What it is

A flaw was found in s390 eBPF JIT in bpf_jit_insn in arch/s390/net/bpf_jit_comp.c in the Linux kernel. In this flaw, a local attacker with special user privilege can circumvent the verifier and may lead to a confidentiality problem.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00260 · 16.8th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2022-02-18T23:15Z
Affected products (7)
ProductVersionsFixed in
linux/linux_kernel< 5.155.15
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
fedoraproject/fedoraall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
References (4)
https://bugzilla.redhat.com/show_bug.cgi?id=2010090 · [email protected]https://lore.kernel.org/bpf/20210902185229.1840281-1-johan.almbladh%40anyfinetworks.com/ · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2010090 · af854a3a-2127-422b-91ae-364da2661108https://lore.kernel.org/bpf/20210902185229.1840281-1-johan.almbladh%40anyfinetworks.com/ · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 18 FEB 17:50Z
    A flaw was found in s390 eBPF JIT in bpf_jit_insn in arch/s390/net/bpf_jit_comp.c in the Linux kernel
    cvelistv5