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")).
from 84d1bb2b139e0184b1754aa1b5776186b475fce8 before a0ddb20a748b122ea86003485f7992fa5e84cc95; from 84d1bb2b139e0184b1754aa1b5776186b475fce8 before ffad2ac8c859c1c1a981fe9c4f7ff925db684a43; from 84d1bb2b139e0184b1754aa1b5776186b475fce8 before c7b97f9e794d8e2bbaa50e1d6c230196fd214b5e; 84d1bb2b139e0184b1754aa1b5776186b475fce8 builds before 69fbd07f17b0fdaf8970bc705f5bf115c297839d; from 84d1bb2b139e0184b1754aa1b5776186b475fce8 before 93a14620b97c911489a5b008782f3d9b0c4aeff4; from 84d1bb2b139e0184b1754aa1b5776186b475fce8 before 2723e8b2cbd486cb96e5a61b22473f7fd62e18df; from 84d1bb2b139e0184b1754aa1b5776186b475fce8 before dd6e972cc5890d91d6749bb48e3912721c4e4b25
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.
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