Vulnerability Description
An issue was discovered in slc_bump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2. It allows attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL, aka CID-b9258a2cece4.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.16, <= 5.6.2 |
| Opensuse | Leap | 15.1 |
| Debian | Debian Linux | 8.0 |
| Canonical | Ubuntu Linux | 14.04 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.htmlMailing ListThird Party Advisory
- http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSThird Party AdvisoryVDB Entry
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32cMailing ListPatchVendor Advisory
- https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f626PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200430-0004/Third Party Advisory
- https://usn.ubuntu.com/4363-1/Third Party Advisory
- https://usn.ubuntu.com/4364-1/Third Party Advisory
- https://usn.ubuntu.com/4368-1/Third Party Advisory
- https://usn.ubuntu.com/4369-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4698Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.htmlMailing ListThird Party Advisory
- http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSThird Party AdvisoryVDB Entry
FAQ
What is CVE-2020-11494?
CVE-2020-11494 is a vulnerability with a CVSS score of 4.4 (MEDIUM). An issue was discovered in slc_bump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2. It allows attackers to read uninitialized can_frame data, potentially containing sensitive inform...
How severe is CVE-2020-11494?
CVE-2020-11494 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-11494?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Opensuse Leap, Debian Debian Linux, Canonical Ubuntu Linux.