Description (CNA)
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")).
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 84d1bb2b139e0184b1754aa1b5776186b475fce8 before a0ddb20a748b122ea86003485f7992fa5e84cc95; affected 84d1bb2b139e0184b1754aa1b5776186b475fce8 before ffad2ac8c859c1c1a981fe9c4f7ff925db684a43; affected 84d1bb2b139e0184b1754aa1b5776186b475fce8 before c7b97f9e794d8e2bbaa50e1d6c230196fd214b5e; affected 84d1bb2b139e0184b1754aa1b5776186b475fce8 before 69fbd07f17b0fdaf8970bc705f5bf115c297839d; affected 84d1bb2b139e0184b1754aa1b5776186b475fce8 before 93a14620b97c911489a5b008782f3d9b0c4aeff4; affected 84d1bb2b139e0184b1754aa1b5776186b475fce8 before 2723e8b2cbd486cb96e5a61b22473f7fd62e18df; affected 84d1bb2b139e0184b1754aa1b5776186b475fce8 before dd6e972cc5890d91d6749bb48e3912721c4e4b25 |
| Linux / Linux | affected 5.4; unaffected 0 before 5.4; unaffected 5.4.287 through 5.4.*; unaffected 5.10.231 through 5.10.*; unaffected 5.15.174 through 5.15.*; unaffected 6.1.119 through 6.1.*; unaffected 6.6.63 through 6.6.*; unaffected 6.11.10 through 6.11.*; unaffected 6.12 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a0ddb20a748b122ea86003485f7992fa5e84cc95
- https://git.kernel.org/stable/c/ffad2ac8c859c1c1a981fe9c4f7ff925db684a43
- https://git.kernel.org/stable/c/c7b97f9e794d8e2bbaa50e1d6c230196fd214b5e
- https://git.kernel.org/stable/c/69fbd07f17b0fdaf8970bc705f5bf115c297839d
- https://git.kernel.org/stable/c/93a14620b97c911489a5b008782f3d9b0c4aeff4
- https://git.kernel.org/stable/c/2723e8b2cbd486cb96e5a61b22473f7fd62e18df
- https://git.kernel.org/stable/c/dd6e972cc5890d91d6749bb48e3912721c4e4b25
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.