Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-11494

CVE-2020-11494MEDIUM

n/a n/a — An issue was discovered in slc_bump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   H   N  U  H  N  N    4.4   .0072   53.1     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Apr 2   Reserved by mitre
  Apr 2   Published (CNA: mitre)
  Oct 8   ENRICHED — CVE-2020-11494. Received CVSS 4.4 and CPE data from NVD.

CWE-908, CWE-909 · CNA: mitre · CVSS v3.1 · 13 references · NVD status: Modified

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 2, 2020	Reserved	Reserved by mitre
April 2, 2020	Published	Published (CNA: mitre)
October 8, 2026	ENRICHED	ENRICHED — CVE-2020-11494. Received CVSS 4.4 and CPE data from NVD.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-908 · CWE-909

References (13)

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html [Mailing List, Third Party Advisory]
http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html [Third Party Advisory, VDB Entry]
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32ce6239dc75fd5e869590e29bc62bbc28 [Mailing List, Patch, Vendor Advisory]
https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264 [Patch, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html [Mailing List, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html [Mailing List, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html [Mailing List, Third 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-4698 [Third Party Advisory]

Authoritative record: CVE-2020-11494 at cve.org

Weaknesses: CWE-908 · CWE-909

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-11494 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.