7.8

CVE-2021-4028

A flaw in the Linux kernel's implementation of RDMA communications manager listener code allowed an attacker with local access to setup a socket to listen on a high port allowing for a list element to be used after free. Given the ability to execute code, a local attacker could leverage this use-after-free to crash the system or possibly escalate privileges on the system.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.10 < 5.10.71
Linux ≫ Linux Kernel Version >= 5.11 < 5.14.10
Suse ≫ Linux Enterprise Version15.0 Updatesp3
Suse ≫ Linux Enterprise Version15.0 Updatesp4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.3% 0.213
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://access.redhat.com/security/cve/CVE-2021-4028
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2027201
Third Party Advisory
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=1193167#c0
Patch
Third Party Advisory
Issue Tracking
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0bdc5afaa74
Patch
Vendor Advisory
Mailing List
https://lkml.org/lkml/2021/10/4/697
Patch
Vendor Advisory
Mailing List
https://security.netapp.com/advisory/ntap-20221228-0002/
Third Party Advisory