4.7

CVE-2022-49798

tracing: Fix race where eprobes can be called before the event

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

tracing: Fix race where eprobes can be called before the event

The flag that tells the event to call its triggers after reading the event
is set for eprobes after the eprobe is enabled. This leads to a race where
the eprobe may be triggered at the beginning of the event where the record
information is NULL. The eprobe then dereferences the NULL record causing
a NULL kernel pointer bug.

Test for a NULL record to keep this from happening.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.15 < 5.15.80
Linux ≫ Linux Kernel Version >= 5.16 < 6.0.10
Linux ≫ Linux Kernel Version 6.1 Update rc1
Linux ≫ Linux Kernel Version 6.1 Update rc2
Linux ≫ Linux Kernel Version 6.1 Update rc3
Linux ≫ Linux Kernel Version 6.1 Update rc4
Linux ≫ Linux Kernel Version 6.1 Update rc5
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.033
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 4.7 1 3.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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.

https://git.kernel.org/stable/c/7291dec4f2d17a2d3fd1f789fb41e58476539f21
Patch
https://git.kernel.org/stable/c/73f5191467ffe3af82f27fe0ea6a8c2fac724d3f
Patch
https://git.kernel.org/stable/c/94eedf3dded5fb472ce97bfaf3ac1c6c29c35d26
Patch