Vulnerability Details : CVE-2020-14416
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2020-14416
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-14416
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 13 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-14416
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.7
|
MEDIUM | AV:L/AC:M/Au:N/C:N/I:N/A:C |
3.4
|
6.9
|
NIST | |
4.2
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H |
0.6
|
3.6
|
NIST |
CWE ids for CVE-2020-14416
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The 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.Assigned by: nvd@nist.gov (Primary)
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The 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-14416
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https://bugzilla.suse.com/show_bug.cgi?id=1162002
Bug 1162002 – VUL-0: CVE-2020-14416: kernel-source: can, slip: Protect tty->disc_data in write_wakeup and close with RCUIssue Tracking;Patch;Third Party Advisory
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https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.16
Release Notes;Vendor Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html
[security-announce] openSUSE-SU-2020:0935-1: important: Security updateMailing List;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
[security-announce] openSUSE-SU-2020:1153-1: important: Security updateMailing List;Third Party Advisory
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ace17d56824165c7f4c68785d6b58971db954dd
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
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