CVE-2021-42008 — Out-of-bounds Write in Kernel

CWE-787 — Out-of-bounds WriteCWE-20 — Improper Input Validation20 documents7 sources
Severity
7.8HIGHNVD
OSV6.5OSV5.4
EPSS
0.9%
top 23.88%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Linux KernelDebian LinuxDebian Linux+2 more
Timeline
PublishedOct 5
Latest updateMay 24

Description

The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages6 packages

▶NVDlinux/linux_kernel2.6.12 — 4.4.282+6
▶Debianlinux/linux_kernel< 5.10.70-1+3
▶Ubuntulinux/linux_kernel< 4.15.0-161.169+3
▶debiandebian/linux< linux 5.14.6-1 (bookworm)

Also affects: Debian Linux 9.0

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

9
GHSA
GHSA-qv6w-x298-fgf8: The decode_data function in drivers/net/hamradio/6pack↗2022-05-24
▶
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities↗2022-03-22
▶
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities↗2022-02-22
▶
OSV
linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-ibm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-↗2021-10-22
▶
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities↗2021-10-22
▶

📋Vendor Advisories

10
Ubuntu
Linux kernel vulnerabilities↗2022-03-22
▶
Ubuntu
Linux kernel vulnerabilities↗2022-02-22
▶
Ubuntu
Linux kernel vulnerabilities↗2021-10-22
▶
Ubuntu
Linux kernel vulnerabilities↗2021-10-22
▶
Ubuntu
Linux kernel vulnerabilities↗2021-10-20
▶
CVE-2021-42008 — Out-of-bounds Write in Linux Kernel | cvebase