| 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-2024-26799: ASoC: qcom: Fix uninitialized pointer dmactl |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ASoC: qcom: Fix uninitialized pointer dmactl |
| |
| In the case where __lpass_get_dmactl_handle is called and the driver |
| id dai_id is invalid the pointer dmactl is not being assigned a value, |
| and dmactl contains a garbage value since it has not been initialized |
| and so the null check may not work. Fix this to initialize dmactl to |
| NULL. One could argue that modern compilers will set this to zero, but |
| it is useful to keep this initialized as per the same way in functions |
| __lpass_platform_codec_intf_init and lpass_cdc_dma_daiops_hw_params. |
| |
| Cleans up clang scan build warning: |
| sound/soc/qcom/lpass-cdc-dma.c:275:7: warning: Branch condition |
| evaluates to a garbage value [core.uninitialized.Branch] |
| |
| The Linux kernel CVE team has assigned CVE-2024-26799 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.18 with commit b81af585ea54ee9f749391e594ee9cbd44061eae and fixed in 6.6.21 with commit 99adc8b4d2f38bf0d06483ec845bc48f60c3f8cf |
| Issue introduced in 5.18 with commit b81af585ea54ee9f749391e594ee9cbd44061eae and fixed in 6.7.9 with commit d5a7726e6ea62d447b79ab5baeb537ea6bdb225b |
| Issue introduced in 5.18 with commit b81af585ea54ee9f749391e594ee9cbd44061eae and fixed in 6.8 with commit 1382d8b55129875b2e07c4d2a7ebc790183769ee |
| |
| 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-2024-26799 |
| 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: |
| sound/soc/qcom/lpass-cdc-dma.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/99adc8b4d2f38bf0d06483ec845bc48f60c3f8cf |
| https://git.kernel.org/stable/c/d5a7726e6ea62d447b79ab5baeb537ea6bdb225b |
| https://git.kernel.org/stable/c/1382d8b55129875b2e07c4d2a7ebc790183769ee |
