Buffer overflow in Linux Kernel
CVE-2021-42008
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.13 (Release Notes, Vendor Advisory)
- www.youtube.com/watch (Exploit, Third Party Advisory)
- security.netapp.com/advisory/ntap-20211104-0002/ (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/12/msg00012.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-42008?
- CVE-2021-42008 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-10-05.
- How severe is CVE-2021-42008?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-42008 known to be exploited?
- 37 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.