| 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-2024-43850: soc: qcom: icc-bwmon: Fix refcount imbalance seen during bwmon_remove |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| soc: qcom: icc-bwmon: Fix refcount imbalance seen during bwmon_remove |
| |
| The following warning is seen during bwmon_remove due to refcount |
| imbalance, fix this by releasing the OPPs after use. |
| |
| Logs: |
| WARNING: at drivers/opp/core.c:1640 _opp_table_kref_release+0x150/0x158 |
| Hardware name: Qualcomm Technologies, Inc. X1E80100 CRD (DT) |
| ... |
| Call trace: |
| _opp_table_kref_release+0x150/0x158 |
| dev_pm_opp_remove_table+0x100/0x1b4 |
| devm_pm_opp_of_table_release+0x10/0x1c |
| devm_action_release+0x14/0x20 |
| devres_release_all+0xa4/0x104 |
| device_unbind_cleanup+0x18/0x60 |
| device_release_driver_internal+0x1ec/0x228 |
| driver_detach+0x50/0x98 |
| bus_remove_driver+0x6c/0xbc |
| driver_unregister+0x30/0x60 |
| platform_driver_unregister+0x14/0x20 |
| bwmon_driver_exit+0x18/0x524 [icc_bwmon] |
| __arm64_sys_delete_module+0x184/0x264 |
| invoke_syscall+0x48/0x118 |
| el0_svc_common.constprop.0+0xc8/0xe8 |
| do_el0_svc+0x20/0x2c |
| el0_svc+0x34/0xdc |
| el0t_64_sync_handler+0x13c/0x158 |
| el0t_64_sync+0x190/0x194 |
| --[ end trace 0000000000000000 ]--- |
| |
| The Linux kernel CVE team has assigned CVE-2024-43850 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.0 with commit b9c2ae6cac403dee3195fda9eb28d8ee733b225b and fixed in 6.6.44 with commit aad41f4c169bcb800ae88123799bdf8cdec3d366 |
| Issue introduced in 6.0 with commit b9c2ae6cac403dee3195fda9eb28d8ee733b225b and fixed in 6.10.3 with commit 4100d4d019f8e140be1d4d3a9d8d93c1285f5d1c |
| Issue introduced in 6.0 with commit b9c2ae6cac403dee3195fda9eb28d8ee733b225b and fixed in 6.11 with commit 24086640ab39396eb1a92d1cb1cd2f31b2677c52 |
| |
| 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-2024-43850 |
| 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/soc/qcom/icc-bwmon.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/aad41f4c169bcb800ae88123799bdf8cdec3d366 |
| https://git.kernel.org/stable/c/4100d4d019f8e140be1d4d3a9d8d93c1285f5d1c |
| https://git.kernel.org/stable/c/24086640ab39396eb1a92d1cb1cd2f31b2677c52 |
