CVE-2024-53138 - Linux Melanox mlx5e kTLS Page Reference Counting Memory Leak

CVE-2024-53138 - Linux Melanox mlx5e kTLS Page Reference Counting Memory Leak

https://cvefeed.io/rssfeed/latest.atom / Wed, 12/04/2024 - 17:51
CVE ID : CVE-2024-53138
Published : Dec. 4, 2024, 3:15 p.m. | 1 hour, 36 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: kTLS, Fix incorrect page refcounting The kTLS tx handling code is using a mix of get_page() and page_ref_inc() APIs to increment the page reference. But on the release path (mlx5e_ktls_tx_handle_resync_dump_comp()), only put_page() is used. This is an issue when using pages from large folios: the get_page() references are stored on the folio page while the page_ref_inc() references are stored directly in the given page. On release the folio page will be dereferenced too many times. This was found while doing kTLS testing with sendfile() + ZC when the served file was read from NFS on a kernel with NFS large folios support (commit 49b29a573da8 ("nfs: add support for large folios")).
Severity: 0.0 | NA
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