| 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-2023-52785: scsi: ufs: core: Fix racing issue between ufshcd_mcq_abort() and ISR |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| scsi: ufs: core: Fix racing issue between ufshcd_mcq_abort() and ISR |
| |
| If command timeout happens and cq complete IRQ is raised at the same time, |
| ufshcd_mcq_abort clears lprb->cmd and a NULL pointer deref happens in the |
| ISR. Error log: |
| |
| ufshcd_abort: Device abort task at tag 18 |
| Unable to handle kernel NULL pointer dereference at virtual address |
| 0000000000000108 |
| pc : [0xffffffe27ef867ac] scsi_dma_unmap+0xc/0x44 |
| lr : [0xffffffe27f1b898c] ufshcd_release_scsi_cmd+0x24/0x114 |
| |
| The Linux kernel CVE team has assigned CVE-2023-52785 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.5 with commit f1304d4420777f82a1d844c606db3d9eca841765 and fixed in 6.5.13 with commit 8f15a7e3c054d960bbd1521110700450bbf798a1 |
| Issue introduced in 6.5 with commit f1304d4420777f82a1d844c606db3d9eca841765 and fixed in 6.6.3 with commit f84d461f33a6b27304d468d9cfb56c0cefdb4ee7 |
| Issue introduced in 6.5 with commit f1304d4420777f82a1d844c606db3d9eca841765 and fixed in 6.7 with commit 27900d7119c464b43cd9eac69c85884d17bae240 |
| |
| 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-2023-52785 |
| 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/ufs/core/ufs-mcq.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/8f15a7e3c054d960bbd1521110700450bbf798a1 |
| https://git.kernel.org/stable/c/f84d461f33a6b27304d468d9cfb56c0cefdb4ee7 |
| https://git.kernel.org/stable/c/27900d7119c464b43cd9eac69c85884d17bae240 |
