CVE-2021-38300
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedSep 20, 2021
First seenSep 20, 2021
How to fix
Update
- linux linux_kernel4.14.251, 4.19.211, 5.4.153, 5.10.71, 5.14.10 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.16 ≤ v < 4.14.251, 4.15 ≤ v < 4.19.211, 4.20 ≤ v < 5.4.153, 5.5 ≤ v < 5.10.71, 5.11 ≤ v < 5.14.10 | 4.14.251, 4.19.211, 5.4.153, 5.10.71, 5.14.10 |
| netapp cloud_backup | No range specified | — |
| netapp h410c_firmware | No range specified | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h300e_firmware | No range specified | — |
| netapp h500e_firmware | No range specified | — |
| netapp h700e_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| debian debian_linux | 9.0, 10.0 | — |
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