| 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-2022-49451: firmware: arm_scmi: Fix list protocols enumeration in the base protocol |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| firmware: arm_scmi: Fix list protocols enumeration in the base protocol |
| |
| While enumerating protocols implemented by the SCMI platform using |
| BASE_DISCOVER_LIST_PROTOCOLS, the number of returned protocols is |
| currently validated in an improper way since the check employs a sum |
| between unsigned integers that could overflow and cause the check itself |
| to be silently bypassed if the returned value 'loop_num_ret' is big |
| enough. |
| |
| Fix the validation avoiding the addition. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49451 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.17 with commit b6f20ff8bd94ad34032804a60bab5ee56752007e and fixed in 4.19.247 with commit 444a2d27fe9867d0da4b28fc45b793f32e099ab8 |
| Issue introduced in 4.17 with commit b6f20ff8bd94ad34032804a60bab5ee56752007e and fixed in 5.4.198 with commit b0e4bafac8963c2d85ee18d3d01f393735acceec |
| Issue introduced in 4.17 with commit b6f20ff8bd94ad34032804a60bab5ee56752007e and fixed in 5.10.121 with commit 1052f22e127d0c34c3387bb389424ba1c61491ff |
| Issue introduced in 4.17 with commit b6f20ff8bd94ad34032804a60bab5ee56752007e and fixed in 5.15.46 with commit 98342148a8cd242855d7e257f298c966c96dba9f |
| Issue introduced in 4.17 with commit b6f20ff8bd94ad34032804a60bab5ee56752007e and fixed in 5.17.14 with commit 6e7978695f4a6cbd83616b5a702b77fa2087b247 |
| Issue introduced in 4.17 with commit b6f20ff8bd94ad34032804a60bab5ee56752007e and fixed in 5.18.3 with commit 2ccfcd7a09c826516edcfe464b05071961aada3f |
| Issue introduced in 4.17 with commit b6f20ff8bd94ad34032804a60bab5ee56752007e and fixed in 5.19 with commit 8009120e0354a67068e920eb10dce532391361d0 |
| |
| 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-2022-49451 |
| 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/firmware/arm_scmi/base.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/444a2d27fe9867d0da4b28fc45b793f32e099ab8 |
| https://git.kernel.org/stable/c/b0e4bafac8963c2d85ee18d3d01f393735acceec |
| https://git.kernel.org/stable/c/1052f22e127d0c34c3387bb389424ba1c61491ff |
| https://git.kernel.org/stable/c/98342148a8cd242855d7e257f298c966c96dba9f |
| https://git.kernel.org/stable/c/6e7978695f4a6cbd83616b5a702b77fa2087b247 |
| https://git.kernel.org/stable/c/2ccfcd7a09c826516edcfe464b05071961aada3f |
| https://git.kernel.org/stable/c/8009120e0354a67068e920eb10dce532391361d0 |
