CVE-2024-53138

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux84d1bb2b139e0184b1754aa1b5776186b475fce8 < a0ddb20a748b122ea86003485f7992fa5e84cc95affected
LinuxLinux84d1bb2b139e0184b1754aa1b5776186b475fce8 < ffad2ac8c859c1c1a981fe9c4f7ff925db684a43affected
LinuxLinux84d1bb2b139e0184b1754aa1b5776186b475fce8 < c7b97f9e794d8e2bbaa50e1d6c230196fd214b5eaffected
LinuxLinux84d1bb2b139e0184b1754aa1b5776186b475fce8 < 69fbd07f17b0fdaf8970bc705f5bf115c297839daffected
LinuxLinux84d1bb2b139e0184b1754aa1b5776186b475fce8 < 93a14620b97c911489a5b008782f3d9b0c4aeff4affected
LinuxLinux84d1bb2b139e0184b1754aa1b5776186b475fce8 < 2723e8b2cbd486cb96e5a61b22473f7fd62e18dfaffected
LinuxLinux84d1bb2b139e0184b1754aa1b5776186b475fce8 < dd6e972cc5890d91d6749bb48e3912721c4e4b25affected
LinuxLinux5.4affected
LinuxLinux0 < 5.4unaffected
LinuxLinux5.4.287 <= 5.4.*unaffected
LinuxLinux5.10.231 <= 5.10.*unaffected
LinuxLinux5.15.174 <= 5.15.*unaffected
LinuxLinux6.1.119 <= 6.1.*unaffected
LinuxLinux6.6.63 <= 6.6.*unaffected
LinuxLinux6.11.10 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References