| 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-2023-52774: s390/dasd: protect device queue against concurrent access |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| s390/dasd: protect device queue against concurrent access |
| |
| In dasd_profile_start() the amount of requests on the device queue are |
| counted. The access to the device queue is unprotected against |
| concurrent access. With a lot of parallel I/O, especially with alias |
| devices enabled, the device queue can change while dasd_profile_start() |
| is accessing the queue. In the worst case this leads to a kernel panic |
| due to incorrect pointer accesses. |
| |
| Fix this by taking the device lock before accessing the queue and |
| counting the requests. Additionally the check for a valid profile data |
| pointer can be done earlier to avoid unnecessary locking in a hot path. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52774 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.1 with commit 4fa52aa7a82f9226b3874a69816bda3af821f002 and fixed in 4.14.332 with commit ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f |
| Issue introduced in 3.1 with commit 4fa52aa7a82f9226b3874a69816bda3af821f002 and fixed in 4.19.301 with commit f75617cc8df4155374132f0b500b0b3ebb967458 |
| Issue introduced in 3.1 with commit 4fa52aa7a82f9226b3874a69816bda3af821f002 and fixed in 5.4.263 with commit f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d |
| Issue introduced in 3.1 with commit 4fa52aa7a82f9226b3874a69816bda3af821f002 and fixed in 5.10.203 with commit c841de6247e94e07566d57163d3c0d8b29278f7a |
| Issue introduced in 3.1 with commit 4fa52aa7a82f9226b3874a69816bda3af821f002 and fixed in 5.15.141 with commit 6062c527d0403cef27c54b91ac8390c3a497b250 |
| Issue introduced in 3.1 with commit 4fa52aa7a82f9226b3874a69816bda3af821f002 and fixed in 6.1.65 with commit dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be |
| Issue introduced in 3.1 with commit 4fa52aa7a82f9226b3874a69816bda3af821f002 and fixed in 6.6.4 with commit 9372aab5d0ff621ea203c8c603e7e5f75e888240 |
| Issue introduced in 3.1 with commit 4fa52aa7a82f9226b3874a69816bda3af821f002 and fixed in 6.7 with commit db46cd1e0426f52999d50fa72cfa97fa39952885 |
| |
| 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-2023-52774 |
| 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/s390/block/dasd.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/ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f |
| https://git.kernel.org/stable/c/f75617cc8df4155374132f0b500b0b3ebb967458 |
| https://git.kernel.org/stable/c/f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d |
| https://git.kernel.org/stable/c/c841de6247e94e07566d57163d3c0d8b29278f7a |
| https://git.kernel.org/stable/c/6062c527d0403cef27c54b91ac8390c3a497b250 |
| https://git.kernel.org/stable/c/dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be |
| https://git.kernel.org/stable/c/9372aab5d0ff621ea203c8c603e7e5f75e888240 |
| https://git.kernel.org/stable/c/db46cd1e0426f52999d50fa72cfa97fa39952885 |
