| 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-2024-35954: scsi: sg: Avoid sg device teardown race |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| scsi: sg: Avoid sg device teardown race |
| |
| sg_remove_sfp_usercontext() must not use sg_device_destroy() after calling |
| scsi_device_put(). |
| |
| sg_device_destroy() is accessing the parent scsi_device request_queue which |
| will already be set to NULL when the preceding call to scsi_device_put() |
| removed the last reference to the parent scsi_device. |
| |
| The resulting NULL pointer exception will then crash the kernel. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35954 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.5 with commit db59133e927916d8a25ee1fd8264f2808040909d and fixed in 6.6.28 with commit 46af9047523e2517712ae8e71d984286c626e022 |
| Issue introduced in 6.5 with commit db59133e927916d8a25ee1fd8264f2808040909d and fixed in 6.8.7 with commit b0d1ebcc1a9560e494ea9b3ee808540db26c5086 |
| Issue introduced in 6.5 with commit db59133e927916d8a25ee1fd8264f2808040909d and fixed in 6.9 with commit 27f58c04a8f438078583041468ec60597841284d |
| Issue introduced in 6.4.7 with commit 4cc664e59bf2553771e4c9e90f758f7434cfdc22 |
| |
| 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-2024-35954 |
| 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/sg.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/46af9047523e2517712ae8e71d984286c626e022 |
| https://git.kernel.org/stable/c/b0d1ebcc1a9560e494ea9b3ee808540db26c5086 |
| https://git.kernel.org/stable/c/27f58c04a8f438078583041468ec60597841284d |
