CVE-2026-45863
i3c: dw: Fix memory leak in dw_i3c_master_i2c_xfers()
Description
In the Linux kernel, the following vulnerability has been resolved: i3c: dw: Fix memory leak in dw_i3c_master_i2c_xfers() The dw_i3c_master_i2c_xfers() function allocates memory for the xfer structure using dw_i3c_master_alloc_xfer(). If pm_runtime_resume_and_get() fails, the function returns without freeing the allocated xfer, resulting in a memory leak. Add a dw_i3c_master_free_xfer() call to the error path to ensure the allocated memory is properly freed. Compile tested only. Issue found using a prototype static analysis tool and code review.
INFO
Published Date :
May 27, 2026, 2:16 p.m.
Last Modified :
May 27, 2026, 2:48 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Add a call to dw_i3c_master_free_xfer() in error paths.
- Ensure allocated memory is freed when pm_runtime_resume_and_get fails.
- Apply the patch to the Linux kernel source code.
- Recompile the kernel after applying the fix.
References to Advisories, Solutions, and Tools
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CWE - Common Weakness Enumeration
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specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45863 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
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stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45863
weaknesses.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 27, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: i3c: dw: Fix memory leak in dw_i3c_master_i2c_xfers() The dw_i3c_master_i2c_xfers() function allocates memory for the xfer structure using dw_i3c_master_alloc_xfer(). If pm_runtime_resume_and_get() fails, the function returns without freeing the allocated xfer, resulting in a memory leak. Add a dw_i3c_master_free_xfer() call to the error path to ensure the allocated memory is properly freed. Compile tested only. Issue found using a prototype static analysis tool and code review. Added Reference https://git.kernel.org/stable/c/140a45bd4f6db7d1b30cab967d29689b946c52fa Added Reference https://git.kernel.org/stable/c/2537089413514caaa9a5fdeeac3a34d45100f747 Added Reference https://git.kernel.org/stable/c/8e71414e252c1cb235911008a98fd47927d3a55c Added Reference https://git.kernel.org/stable/c/a2c41467ef42f69a3958493a0395ba75174710dc