5.5

CVE-2021-47186

tipc: check for null after calling kmemdup

In the Linux kernel, the following vulnerability has been resolved:

tipc: check for null after calling kmemdup

kmemdup can return a null pointer so need to check for it, otherwise
the null key will be dereferenced later in tipc_crypto_key_xmit as
can be seen in the trace [1].


[1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.82
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.5
Linux ≫ Linux Kernel Version5.16 Updaterc1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.22% 0.125
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916
Patch
https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10
Patch
https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9
Patch