| 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-2024-41038: firmware: cs_dsp: Prevent buffer overrun when processing V2 alg headers |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| firmware: cs_dsp: Prevent buffer overrun when processing V2 alg headers |
| |
| Check that all fields of a V2 algorithm header fit into the available |
| firmware data buffer. |
| |
| The wmfw V2 format introduced variable-length strings in the algorithm |
| block header. This means the overall header length is variable, and the |
| position of most fields varies depending on the length of the string |
| fields. Each field must be checked to ensure that it does not overflow |
| the firmware data buffer. |
| |
| As this ia bugfix patch, the fixes avoid making any significant change to |
| the existing code. This makes it easier to review and less likely to |
| introduce new bugs. |
| |
| The Linux kernel CVE team has assigned CVE-2024-41038 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.16 with commit f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 and fixed in 6.1.100 with commit 6619aa48a011364e9f29083cc76368e6acfe5b11 |
| Issue introduced in 5.16 with commit f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 and fixed in 6.6.41 with commit 76ea8e13aaefdfda6e5601323d6ea5340359dcfa |
| Issue introduced in 5.16 with commit f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 and fixed in 6.9.10 with commit 014239b9971d79421a0ba652579e1ca1b7b57b6d |
| Issue introduced in 5.16 with commit f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 and fixed in 6.10 with commit 2163aff6bebbb752edf73f79700f5e2095f3559e |
| |
| 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-2024-41038 |
| 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/cirrus/cs_dsp.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/6619aa48a011364e9f29083cc76368e6acfe5b11 |
| https://git.kernel.org/stable/c/76ea8e13aaefdfda6e5601323d6ea5340359dcfa |
| https://git.kernel.org/stable/c/014239b9971d79421a0ba652579e1ca1b7b57b6d |
| https://git.kernel.org/stable/c/2163aff6bebbb752edf73f79700f5e2095f3559e |
