7.1

CVE-2020-8428

fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.19 < 5.5
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.66% 0.465
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.1 1.8 5.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
nvd@nist.gov 3.6 3.9 4.9
AV:L/AC:L/Au:N/C:P/I:N/A:P
CWE-416 Use After Free

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://www.debian.org/security/2020/dsa-4698
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
https://usn.ubuntu.com/4319-1/
https://usn.ubuntu.com/4325-1/
https://security.netapp.com/advisory/ntap-20200313-0003/
http://www.openwall.com/lists/oss-security/2020/01/28/4
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2020/02/02/1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6
Patch
Vendor Advisory
Mailing List
https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6
Patch
Third Party Advisory
https://usn.ubuntu.com/4318-1/
https://usn.ubuntu.com/4320-1/
https://usn.ubuntu.com/4324-1/
https://www.debian.org/security/2020/dsa-4667
https://www.openwall.com/lists/oss-security/2020/01/28/2
Third Party Advisory
Mailing List