| 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-2024-43816: scsi: lpfc: Revise lpfc_prep_embed_io routine with proper endian macro usages |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| scsi: lpfc: Revise lpfc_prep_embed_io routine with proper endian macro usages |
| |
| On big endian architectures, it is possible to run into a memory out of |
| bounds pointer dereference when FCP targets are zoned. |
| |
| In lpfc_prep_embed_io, the memcpy(ptr, fcp_cmnd, sgl->sge_len) is |
| referencing a little endian formatted sgl->sge_len value. So, the memcpy |
| can cause big endian systems to crash. |
| |
| Redefine the *sgl ptr as a struct sli4_sge_le to make it clear that we are |
| referring to a little endian formatted data structure. And, update the |
| routine with proper le32_to_cpu macro usages. |
| |
| The Linux kernel CVE team has assigned CVE-2024-43816 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.10 with commit af20bb73ac2591631d504f3f859f073bcdb7e11e and fixed in 6.10.3 with commit 9fd003f344d502f65252963169df3dd237054e49 |
| Issue introduced in 6.10 with commit af20bb73ac2591631d504f3f859f073bcdb7e11e and fixed in 6.11 with commit 8bc7c617642db6d8d20ee671fb6c4513017e7a7e |
| |
| 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-2024-43816 |
| 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/lpfc/lpfc_sli.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/9fd003f344d502f65252963169df3dd237054e49 |
| https://git.kernel.org/stable/c/8bc7c617642db6d8d20ee671fb6c4513017e7a7e |
