Vulnerability Details CVE-2024-57934
In the Linux kernel, the following vulnerability has been resolved:
fgraph: Add READ_ONCE() when accessing fgraph_array[]
In __ftrace_return_to_handler(), a loop iterates over the fgraph_array[]
elements, which are fgraph_ops. The loop checks if an element is a
fgraph_stub to prevent using a fgraph_stub afterward.
However, if the compiler reloads fgraph_array[] after this check, it might
race with an update to fgraph_array[] that introduces a fgraph_stub. This
could result in the stub being processed, but the stub contains a null
"func_hash" field, leading to a NULL pointer dereference.
To ensure that the gops compared against the fgraph_stub matches the gops
processed later, add a READ_ONCE(). A similar patch appears in commit
63a8dfb ("function_graph: Add READ_ONCE() when accessing fgraph_array[]").
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 3.4%
CVSS Severity
CVSS v3 Score 4.7
References
Products affected by CVE-2024-57934
-
cpe:2.3:o:linux:linux_kernel:6.11
-
cpe:2.3:o:linux:linux_kernel:6.11.1
-
cpe:2.3:o:linux:linux_kernel:6.11.10
-
cpe:2.3:o:linux:linux_kernel:6.11.11
-
cpe:2.3:o:linux:linux_kernel:6.11.2
-
cpe:2.3:o:linux:linux_kernel:6.11.3
-
cpe:2.3:o:linux:linux_kernel:6.11.4
-
cpe:2.3:o:linux:linux_kernel:6.11.5
-
cpe:2.3:o:linux:linux_kernel:6.11.6
-
cpe:2.3:o:linux:linux_kernel:6.11.7
-
cpe:2.3:o:linux:linux_kernel:6.11.8
-
cpe:2.3:o:linux:linux_kernel:6.11.9
-
cpe:2.3:o:linux:linux_kernel:6.12
-
cpe:2.3:o:linux:linux_kernel:6.12.1
-
cpe:2.3:o:linux:linux_kernel:6.12.2
-
cpe:2.3:o:linux:linux_kernel:6.12.3
-
cpe:2.3:o:linux:linux_kernel:6.12.4
-
cpe:2.3:o:linux:linux_kernel:6.12.5
-
cpe:2.3:o:linux:linux_kernel:6.12.6
-
cpe:2.3:o:linux:linux_kernel:6.12.7
-
cpe:2.3:o:linux:linux_kernel:6.12.8
-
cpe:2.3:o:linux:linux_kernel:6.13