CVE-2020-14416: linux linux_kernel
Vulnerability summary
CVE-2020-14416 is a medium (CVSS 4.7) vulnerability in linux linux_kernel. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 23.8% of scored vulnerabilities.
Not severe (CVSS 4.2, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 18 · Related 17Timeline
- 18-06-2020PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel before 5.4.16, a race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · DebianEcosystem advisory · calculated4.2MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
- NVDNIST4.2MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.31%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.31% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-362Concurrent Execution using Shared Resource with Improper SynchronizationThe product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
- CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Affected systems
Known conditions: local access, administrative account, user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu35 products
- linuxAll versions (No fix recorded) | < 4.4.0-176.206 | < 4.15.0-91.92
- linux-aws< 4.4.0-1064.68 | < 4.4.0-1104.115 | < 4.15.0-1063.67
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
- linux-aws-hwe< 4.15.0-1063.67~16.04.1
Debian1 product
- linux< 5.4.19-1
Linux1 product
- linux_kernel< 5.4.16
Opensuse1 product
- leapEOL15.1 | 15.2
4 vendors · 38 products
References
8 links- bugzilla.suse.com/show_bug.cgi?id=1162002X Refsource MISCREPORTIssue TrackingPatchThird Party Advisory
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.16X Refsource MISCREPORTRelease NotesVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
