Vulnerability in Linux Kernel
CVE-2021-34693
net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lore.kernel.org/netdev/trinity-87eaea25-2a7d-4aa9-92a5-269b822e5d95-16236092110…
- www.openwall.com/lists/oss-security/2021/06/15/1 (mailing-list, Exploit, Patch, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/07/msg00016.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/07/msg00014.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/07/msg00015.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2021/dsa-4941 (vendor-advisory, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/
Frequently asked questions
- What is CVE-2021-34693?
- CVE-2021-34693 is a medium-severity vulnerability in Linux Kernel, classified under CWE-909. CVSS score: 5.5/10. Published 2021-06-14.
- How severe is CVE-2021-34693?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-34693 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.