CVE-2020-11494

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 3.1

4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS

0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-25)

CWEs

CWE-908, CWE-909

Published

2020-04-02

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• canonical:ubuntu_linux
• debian:debian_linux
• linux:linux_kernel
• opensuse:leap

References

• http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html
• http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html
• https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32ce6239dc75fd5e869590e29bc62bbc28
• https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264
• https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html

Check your stackJSON