Bug 2214024 - kernel: in net/sched Kernel Flower classifier possible OOB write in fl_set_geneve_opt
Summary: kernel: in net/sched Kernel Flower classifier possible OOB write in fl_set_ge...
Keywords:
Status: CLOSED DUPLICATE of bug 2215768
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2214025 2214028 2214030
Blocks: 2213076
TreeView+ depends on / blocked
 
Reported: 2023-06-11 07:43 UTC by Alex
Modified: 2023-06-26 10:53 UTC (History)
45 users (show)

Fixed In Version:
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Last Closed: 2023-06-26 10:28:10 UTC
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Description Alex 2023-06-11 07:43:43 UTC 
A flaw in the Linux Kernel Flower classifier found. If local user creates some specific rules for networking packets classifier and then few malicious packets being received, it can lead to kernel crash and potential privileges escalation.

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/sched?id=4d56304e5827c8cc8cc18c75343d283af7c4825c
Comment 1 Alex 2023-06-11 07:44:03 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2214025]
Comment 5 Justin M. Forbes 2023-06-12 12:59:42 UTC 
This was fixed for Fedora with the 6.3.7 stable kernel update.
Comment 9 Marcelo Ricardo Leitner 2023-06-23 22:19:57 UTC 
(In reply to Alex from comment #0)
> A flaw in the Linux Kernel Flower classifier found. If local user creates
> some specific rules for networking packets classifier and then few malicious
> packets being received, it can lead to kernel crash and potential privileges
> escalation.

I get the point that the system may be configured in a vulnerable state without the user knowing it, but I wonder how this can lead to privilege escalation in this situation.
Comment 10 Mauro Matteo Cascella 2023-06-26 10:28:10 UTC 

*** This bug has been marked as a duplicate of bug 2215768 ***
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