In the Linux kernel, the following vulnerability has been resolved:
block: Fix WARNING in _copy_from_iter
Syzkaller reports a warning in _copy_from_iter because an
iov_iter is supposedly used in the wrong direction. The reason
is that syzcaller managed to generate a request with
a transfer direction of SG_DXFER_TO_FROM_DEV. This instructs
the kernel to copy user buffers into the kernel, read into
the copied buffers and then copy the data back to user space.
Thus the iovec is used in both directions.
Detect this situation in the block layer and construct a new
iterator with the correct direction for the copy-in.
References
Configurations
Configuration 1 (hide)
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History
02 Apr 2025, 13:17
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956 - Patch | |
| References | () https://git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6 - Patch | |
| References | () https://git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b - Patch | |
| References | () https://git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b - Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | NVD-CWE-noinfo | |
| First Time |
Linux linux Kernel
Linux |
Information
Published : 2024-04-17 10:15
Updated : 2025-04-02 13:17
NVD link : CVE-2024-26844
Mitre link : CVE-2024-26844
CVE.ORG link : CVE-2024-26844
JSON object : View
Products Affected
linux
- linux_kernel
CWE