| 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-2024-43821: scsi: lpfc: Fix a possible null pointer dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| scsi: lpfc: Fix a possible null pointer dereference |
| |
| In function lpfc_xcvr_data_show, the memory allocation with kmalloc might |
| fail, thereby making rdp_context a null pointer. In the following context |
| and functions that use this pointer, there are dereferencing operations, |
| leading to null pointer dereference. |
| |
| To fix this issue, a null pointer check should be added. If it is null, |
| use scnprintf to notify the user and return len. |
| |
| The Linux kernel CVE team has assigned CVE-2024-43821 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.2 with commit 479b0917e4477f49df2e3be454aac3cfa5dec171 and fixed in 6.6.44 with commit 57600a7dd2b52c904f7c8d2cac0fd8c23868e680 |
| Issue introduced in 6.2 with commit 479b0917e4477f49df2e3be454aac3cfa5dec171 and fixed in 6.10.3 with commit 45b2a23e00d448a9e6d1f371ca3a4d4b073fe78c |
| Issue introduced in 6.2 with commit 479b0917e4477f49df2e3be454aac3cfa5dec171 and fixed in 6.11 with commit 5e0bf3e8aec2cbc51123f84b29aaacbd91fc56fa |
| |
| 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-2024-43821 |
| 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_attr.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/57600a7dd2b52c904f7c8d2cac0fd8c23868e680 |
| https://git.kernel.org/stable/c/45b2a23e00d448a9e6d1f371ca3a4d4b073fe78c |
| https://git.kernel.org/stable/c/5e0bf3e8aec2cbc51123f84b29aaacbd91fc56fa |
