| 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-2022-49433: RDMA/hfi1: Prevent use of lock before it is initialized |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| RDMA/hfi1: Prevent use of lock before it is initialized |
| |
| If there is a failure during probe of hfi1 before the sdma_map_lock is |
| initialized, the call to hfi1_free_devdata() will attempt to use a lock |
| that has not been initialized. If the locking correctness validator is on |
| then an INFO message and stack trace resembling the following may be seen: |
| |
| INFO: trying to register non-static key. |
| The code is fine but needs lockdep annotation, or maybe |
| you didn't initialize this object before use? |
| turning off the locking correctness validator. |
| Call Trace: |
| register_lock_class+0x11b/0x880 |
| __lock_acquire+0xf3/0x7930 |
| lock_acquire+0xff/0x2d0 |
| _raw_spin_lock_irq+0x46/0x60 |
| sdma_clean+0x42a/0x660 [hfi1] |
| hfi1_free_devdata+0x3a7/0x420 [hfi1] |
| init_one+0x867/0x11a0 [hfi1] |
| pci_device_probe+0x40e/0x8d0 |
| |
| The use of sdma_map_lock in sdma_clean() is for freeing the sdma_map |
| memory, and sdma_map is not allocated/initialized until after |
| sdma_map_lock has been initialized. This code only needs to be run if |
| sdma_map is not NULL, and so checking for that condition will avoid trying |
| to use the lock before it is initialized. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49433 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.3 with commit 7724105686e718ac476a6ad3304fea2fbcfcffde and fixed in 4.19.247 with commit 66090815a24ce14cf51ef5453fc0218fe8a39bc2 |
| Issue introduced in 4.3 with commit 7724105686e718ac476a6ad3304fea2fbcfcffde and fixed in 5.4.198 with commit addb192000d8819c0b1553453994df9bb54c28db |
| Issue introduced in 4.3 with commit 7724105686e718ac476a6ad3304fea2fbcfcffde and fixed in 5.10.121 with commit fc0750e659db7b315bf6348902cc8ca3cdd4b8d8 |
| Issue introduced in 4.3 with commit 7724105686e718ac476a6ad3304fea2fbcfcffde and fixed in 5.15.46 with commit ca55150bff5817af4f857a746ecab9862c23e12a |
| Issue introduced in 4.3 with commit 7724105686e718ac476a6ad3304fea2fbcfcffde and fixed in 5.17.14 with commit 30eb275e7ed588270ae159cc590a96658e0cfd8f |
| Issue introduced in 4.3 with commit 7724105686e718ac476a6ad3304fea2fbcfcffde and fixed in 5.18.3 with commit 288d198f50434f29b4a26a9de4394ae2305ad8af |
| Issue introduced in 4.3 with commit 7724105686e718ac476a6ad3304fea2fbcfcffde and fixed in 5.19 with commit 05c03dfd09c069c4ffd783b47b2da5dcc9421f2c |
| |
| 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-2022-49433 |
| 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/infiniband/hw/hfi1/sdma.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/66090815a24ce14cf51ef5453fc0218fe8a39bc2 |
| https://git.kernel.org/stable/c/addb192000d8819c0b1553453994df9bb54c28db |
| https://git.kernel.org/stable/c/fc0750e659db7b315bf6348902cc8ca3cdd4b8d8 |
| https://git.kernel.org/stable/c/ca55150bff5817af4f857a746ecab9862c23e12a |
| https://git.kernel.org/stable/c/30eb275e7ed588270ae159cc590a96658e0cfd8f |
| https://git.kernel.org/stable/c/288d198f50434f29b4a26a9de4394ae2305ad8af |
| https://git.kernel.org/stable/c/05c03dfd09c069c4ffd783b47b2da5dcc9421f2c |
