CVE-2023-53360
BaseFortify
Publication date: 2025-09-17
Last updated on: 2025-12-11
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 6.4 (inc) to 6.4.16 (exc) |
| linux | linux_kernel | From 6.5 (inc) to 6.5.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-415 | The product calls free() twice on the same memory address. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is in the Linux kernel's NFSv4.2 implementation related to the READ_PLUS operation. The issue arises because the read code might send multiple requests using the same nfs_pgio_header, but the setup function nfs4_proc_read_setup() is only called once. This can lead to double-freeing the scratch buffer or setting a NULL pointer with a non-zero length to the xdr scratch buffer. As a result, an 'oops' (kernel crash) can occur when decoding READ_PLUS hole segments. The fix involves moving scratch buffer handling into the pageio read code, ensuring proper allocation and freeing of the scratch buffer.
How can this vulnerability impact me? :
This vulnerability can cause the Linux kernel to crash (an 'oops') during NFSv4.2 READ_PLUS operations, potentially leading to system instability or denial of service. If your system uses NFSv4.2 and performs READ_PLUS operations, it may be affected by unexpected kernel crashes due to improper memory handling.