| 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-2025-21723: scsi: mpi3mr: Fix possible crash when setting up bsg fails |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| scsi: mpi3mr: Fix possible crash when setting up bsg fails |
| |
| If bsg_setup_queue() fails, the bsg_queue is assigned a non-NULL value. |
| Consequently, in mpi3mr_bsg_exit(), the condition "if(!mrioc->bsg_queue)" |
| will not be satisfied, preventing execution from entering |
| bsg_remove_queue(), which could lead to the following crash: |
| |
| BUG: kernel NULL pointer dereference, address: 000000000000041c |
| Call Trace: |
| <TASK> |
| mpi3mr_bsg_exit+0x1f/0x50 [mpi3mr] |
| mpi3mr_remove+0x6f/0x340 [mpi3mr] |
| pci_device_remove+0x3f/0xb0 |
| device_release_driver_internal+0x19d/0x220 |
| unbind_store+0xa4/0xb0 |
| kernfs_fop_write_iter+0x11f/0x200 |
| vfs_write+0x1fc/0x3e0 |
| ksys_write+0x67/0xe0 |
| do_syscall_64+0x38/0x80 |
| entry_SYSCALL_64_after_hwframe+0x78/0xe2 |
| |
| The Linux kernel CVE team has assigned CVE-2025-21723 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.19 with commit 4268fa7513655a83d5492705591fdac6c65db48a and fixed in 6.12.13 with commit 19b248069d1b1424982723a2bf3941ad864d5204 |
| Issue introduced in 5.19 with commit 4268fa7513655a83d5492705591fdac6c65db48a and fixed in 6.13.2 with commit 832b8f95a2832321b8200ae478ed988b25faaef4 |
| Issue introduced in 5.19 with commit 4268fa7513655a83d5492705591fdac6c65db48a and fixed in 6.14 with commit 295006f6e8c17212d3098811166e29627d19e05c |
| |
| 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-2025-21723 |
| 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/scsi/mpi3mr/mpi3mr_app.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/19b248069d1b1424982723a2bf3941ad864d5204 |
| https://git.kernel.org/stable/c/832b8f95a2832321b8200ae478ed988b25faaef4 |
| https://git.kernel.org/stable/c/295006f6e8c17212d3098811166e29627d19e05c |
