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CVE-2021-38300

HIGH
7.8
CVSS Score
Published: September 20, 2021 at 05:25 AM UTC
Updated: June 17, 2026 at 04:01 AM UTC
19 products affected across 3 vendorsLinux KernelDebian LinuxCloud Backup

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Severity
HIGH7.8
Exploit prediction
EPSS 0.6%

Description

arch/mips/net/bpf_jit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architecture.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
10.09.0
Linux Kernel· Linux
95%
3.16 ≤ v < 4.14.2514.15 ≤ v < 4.19.2114.20 ≤ v < 5.4.1535.11 ≤ v < 5.14.105.5 ≤ v < 5.10.71
Affected range stops below 4.14.251, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.211, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.71, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.14.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.153, so it looks safe — our inference, not a vendor statement
Cloud Backup· NetAppdrupal
95%
All versions
H300E Firmware· NetAppdrupal
95%
All versions
netapp-h300e (same device)
H300S Firmware· NetAppdrupal
95%
All versions
netapp-h300s (same device)
H410C Firmware· NetAppdrupal
95%
All versions
netapp-h410c (same device)
H410S Firmware· NetAppdrupal
95%
All versions
netapp-h410s (same device)
H500E Firmware· NetAppdrupal
95%
All versions
netapp-h500e (same device)
H500S Firmware· NetAppdrupal
95%
All versions
netapp-h500s (same device)
H700E Firmware· NetAppdrupal
95%
All versions
netapp-h700e (same device)

References (6)

x_refsource_MISCMailing ListPatchThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/09/15/5
x_refsource_CONFIRMMailing ListVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10
x_refsource_CONFIRMExploitMailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=37cb28ec7d3a36a5bace7063a3dba633ab110f8b
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20211008-0003/
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2022/dsa-5096

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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