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CVE-2021-29154

HIGHCVSS 7.8/10EPSS 0.94%

Last modified

CVE-2021-29154 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

Description

BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.94%

56.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 3.0, < 4.4.266
LinuxLinux Kernel>= 4.5, < 4.9.266
LinuxLinux Kernel>= 4.10, < 4.14.230
LinuxLinux Kernel>= 4.15, < 4.19.186
LinuxLinux Kernel>= 4.20, < 5.4.111
LinuxLinux Kernel>= 5.5, < 5.10.29
LinuxLinux Kernel>= 5.11, < 5.11.13
FedoraprojectFedora33
DebianDebian Linux9.0
NetappCloud BackupAll versions
NetappHci Management NodeAll versions
NetappSolidfireAll versions
NetappH300s FirmwareAll versions
NetappH500s FirmwareAll versions
NetappH700s FirmwareAll versions
NetappH300e FirmwareAll versions
NetappH500e FirmwareAll versions
NetappH700e FirmwareAll versions
NetappH410s FirmwareAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-29154?
BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.
How severe is CVE-2021-29154?
CVE-2021-29154 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.
How do I fix CVE-2021-29154?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-29154?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST