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Test your applicationsUpgrade SLES:15.6
kernel-livepatch-6_4_0-150600_10_20-rt
to version 1-150600.1.3.1 or higher.
Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-6_4_0-150600_10_20-rt
package and not the kernel-livepatch-6_4_0-150600_10_20-rt
package as distributed by SLES
.
See How to fix?
for SLES:15.6
relevant fixed versions and status.
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")).