Disclosure summary
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.
Source-reported weakness categories
CWE-908, CWE-909
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2020-11494
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| linux | linux_kernel | * {"versionStartIncluding":"3.16","versionEndIncluding":"5.6.2"} |
| opensuse | leap | 15.1 |
| debian | debian_linux | 8.0 |
| debian | debian_linux | 9.0 |
| canonical | ubuntu_linux | 14.04 |
| canonical | ubuntu_linux | 16.04 |
| canonical | ubuntu_linux | 18.04 |
| canonical | ubuntu_linux | 19.10 |
Original records & references
- NIST NVD record
- CVE Program record
- git.kernel.org — Mailing List, Patch, Vendor Advisory
- github.com — Patch, Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- security.netapp.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- www.debian.org — Third Party Advisory
- git.kernel.org — Mailing List, Patch, Vendor Advisory
- github.com — Patch, Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- security.netapp.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- www.debian.org — Third Party Advisory
PUBLISHED 2020-04-02T17:15:13-04:00
MODIFIED 2026-10-08T17:17:20-04:00
INGESTED 2026-10-10T20:50:19-04:00