| 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-2023-52654: io_uring/af_unix: disable sending io_uring over sockets |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| io_uring/af_unix: disable sending io_uring over sockets |
| |
| File reference cycles have caused lots of problems for io_uring |
| in the past, and it still doesn't work exactly right and races with |
| unix_stream_read_generic(). The safest fix would be to completely |
| disallow sending io_uring files via sockets via SCM_RIGHT, so there |
| are no possible cycles invloving registered files and thus rendering |
| SCM accounting on the io_uring side unnecessary. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52654 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.4.220 with commit 04df9719df1865f6770af9bc7880874af0e594b2 and fixed in 5.4.264 with commit 18824f592aad4124d79751bbc1500ea86ac3ff29 |
| Issue introduced in 5.10.150 with commit c378c479c5175833bb22ff71974cda47d7b05401 and fixed in 5.10.204 with commit 3fe1ea5f921bf5b71cbfdc4469fb96c05936610e |
| Issue introduced in 5.15.75 with commit 813d8fe5d30388f73a21d3a2bf46b0a1fd72498c and fixed in 5.15.143 with commit bcedd497b3b4a0be56f3adf7c7542720eced0792 |
| Issue introduced in 6.1 with commit 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80 and fixed in 6.1.68 with commit f2f57f51b53be153a522300454ddb3887722fb2c |
| Issue introduced in 6.1 with commit 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80 and fixed in 6.6.7 with commit 5a33d385eb36991a91e3dddb189d8679e2aac2be |
| Issue introduced in 6.1 with commit 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80 and fixed in 6.7 with commit 705318a99a138c29a512a72c3e0043b3cd7f55f4 |
| Issue introduced in 5.19.17 with commit b4293c01ee0d0ecdd3cb5801e13f62271144667a |
| Issue introduced in 6.0.3 with commit 75e94c7e8859e58aadc15a98cc9704edff47d4f2 |
| |
| 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-2023-52654 |
| 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: |
| io_uring/rsrc.h |
| net/core/scm.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/18824f592aad4124d79751bbc1500ea86ac3ff29 |
| https://git.kernel.org/stable/c/3fe1ea5f921bf5b71cbfdc4469fb96c05936610e |
| https://git.kernel.org/stable/c/bcedd497b3b4a0be56f3adf7c7542720eced0792 |
| https://git.kernel.org/stable/c/f2f57f51b53be153a522300454ddb3887722fb2c |
| https://git.kernel.org/stable/c/5a33d385eb36991a91e3dddb189d8679e2aac2be |
| https://git.kernel.org/stable/c/705318a99a138c29a512a72c3e0043b3cd7f55f4 |
