| 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-2024-57995: wifi: ath12k: fix read pointer after free in ath12k_mac_assign_vif_to_vdev() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: ath12k: fix read pointer after free in ath12k_mac_assign_vif_to_vdev() |
| |
| In ath12k_mac_assign_vif_to_vdev(), if arvif is created on a different |
| radio, it gets deleted from that radio through a call to |
| ath12k_mac_unassign_link_vif(). This action frees the arvif pointer. |
| Subsequently, there is a check involving arvif, which will result in a |
| read-after-free scenario. |
| |
| Fix this by moving this check after arvif is again assigned via call to |
| ath12k_mac_assign_link_vif(). |
| |
| Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1 |
| |
| The Linux kernel CVE team has assigned CVE-2024-57995 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.10 with commit b5068bc9180d06a5ac242b0f9263047c14f86211 and fixed in 6.13.2 with commit f3a95a312419e4f1e992525917da9dbcd247038f |
| Issue introduced in 6.10 with commit b5068bc9180d06a5ac242b0f9263047c14f86211 and fixed in 6.14 with commit 5a10971c7645a95f5d5dc23c26fbac4bf61801d0 |
| |
| 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-2024-57995 |
| 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/net/wireless/ath/ath12k/mac.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/f3a95a312419e4f1e992525917da9dbcd247038f |
| https://git.kernel.org/stable/c/5a10971c7645a95f5d5dc23c26fbac4bf61801d0 |
