Linux Kernel kTLS splice OOB write flaw CVE-2024-0646
CVE-2024-0646 Published on January 17, 2024

Kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination
An out-of-bounds memory write flaw was found in the Linux kernels Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privileges on the system.

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Vulnerability Analysis

CVE-2024-0646 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
LOCAL
Attack Complexity:
HIGH
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Timeline

Reported to Red Hat.

Made public.

Weakness Type

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2024-0646 has been classified to as a Memory Corruption vulnerability or weakness.


Products Associated with CVE-2024-0646

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2024-0646 are published in these products:

Linux Kernel
 
Red Hat Enterprise Linux (RHEL)
 
Canonical Ubuntu Linux
 
Red Hat Rhel Aus
 
Red Hat Rhel E4s
 
Red Hat Rhel Tus
 
Red Hat Rhel Eus
 
Red Hat Rhev Hypervisor
 
Red Hat Logging
 
Google Chrome
 

Exploit Probability

EPSS
0.02%
Percentile
3.89%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.