| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-53138: net/mlx5e: kTLS, Fix incorrect page refcounting |
| |
| 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")). |
| |
| The Linux kernel CVE team has assigned CVE-2024-53138 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.4 with commit 84d1bb2b139e0184b1754aa1b5776186b475fce8 and fixed in 5.4.287 with commit a0ddb20a748b122ea86003485f7992fa5e84cc95 |
| Issue introduced in 5.4 with commit 84d1bb2b139e0184b1754aa1b5776186b475fce8 and fixed in 5.10.231 with commit ffad2ac8c859c1c1a981fe9c4f7ff925db684a43 |
| Issue introduced in 5.4 with commit 84d1bb2b139e0184b1754aa1b5776186b475fce8 and fixed in 5.15.174 with commit c7b97f9e794d8e2bbaa50e1d6c230196fd214b5e |
| Issue introduced in 5.4 with commit 84d1bb2b139e0184b1754aa1b5776186b475fce8 and fixed in 6.1.119 with commit 69fbd07f17b0fdaf8970bc705f5bf115c297839d |
| Issue introduced in 5.4 with commit 84d1bb2b139e0184b1754aa1b5776186b475fce8 and fixed in 6.6.63 with commit 93a14620b97c911489a5b008782f3d9b0c4aeff4 |
| Issue introduced in 5.4 with commit 84d1bb2b139e0184b1754aa1b5776186b475fce8 and fixed in 6.11.10 with commit 2723e8b2cbd486cb96e5a61b22473f7fd62e18df |
| Issue introduced in 5.4 with commit 84d1bb2b139e0184b1754aa1b5776186b475fce8 and fixed in 6.12 with commit dd6e972cc5890d91d6749bb48e3912721c4e4b25 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-53138 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| 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 |
