| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-49989: drm/amd/display: fix double free issue during amdgpu module unload |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: fix double free issue during amdgpu module unload |
| |
| Flexible endpoints use DIGs from available inflexible endpoints, |
| so only the encoders of inflexible links need to be freed. |
| Otherwise, a double free issue may occur when unloading the |
| amdgpu module. |
| |
| [ 279.190523] RIP: 0010:__slab_free+0x152/0x2f0 |
| [ 279.190577] Call Trace: |
| [ 279.190580] <TASK> |
| [ 279.190582] ? show_regs+0x69/0x80 |
| [ 279.190590] ? die+0x3b/0x90 |
| [ 279.190595] ? do_trap+0xc8/0xe0 |
| [ 279.190601] ? do_error_trap+0x73/0xa0 |
| [ 279.190605] ? __slab_free+0x152/0x2f0 |
| [ 279.190609] ? exc_invalid_op+0x56/0x70 |
| [ 279.190616] ? __slab_free+0x152/0x2f0 |
| [ 279.190642] ? asm_exc_invalid_op+0x1f/0x30 |
| [ 279.190648] ? dcn10_link_encoder_destroy+0x19/0x30 [amdgpu] |
| [ 279.191096] ? __slab_free+0x152/0x2f0 |
| [ 279.191102] ? dcn10_link_encoder_destroy+0x19/0x30 [amdgpu] |
| [ 279.191469] kfree+0x260/0x2b0 |
| [ 279.191474] dcn10_link_encoder_destroy+0x19/0x30 [amdgpu] |
| [ 279.191821] link_destroy+0xd7/0x130 [amdgpu] |
| [ 279.192248] dc_destruct+0x90/0x270 [amdgpu] |
| [ 279.192666] dc_destroy+0x19/0x40 [amdgpu] |
| [ 279.193020] amdgpu_dm_fini+0x16e/0x200 [amdgpu] |
| [ 279.193432] dm_hw_fini+0x26/0x40 [amdgpu] |
| [ 279.193795] amdgpu_device_fini_hw+0x24c/0x400 [amdgpu] |
| [ 279.194108] amdgpu_driver_unload_kms+0x4f/0x70 [amdgpu] |
| [ 279.194436] amdgpu_pci_remove+0x40/0x80 [amdgpu] |
| [ 279.194632] pci_device_remove+0x3a/0xa0 |
| [ 279.194638] device_remove+0x40/0x70 |
| [ 279.194642] device_release_driver_internal+0x1ad/0x210 |
| [ 279.194647] driver_detach+0x4e/0xa0 |
| [ 279.194650] bus_remove_driver+0x6f/0xf0 |
| [ 279.194653] driver_unregister+0x33/0x60 |
| [ 279.194657] pci_unregister_driver+0x44/0x90 |
| [ 279.194662] amdgpu_exit+0x19/0x1f0 [amdgpu] |
| [ 279.194939] __do_sys_delete_module.isra.0+0x198/0x2f0 |
| [ 279.194946] __x64_sys_delete_module+0x16/0x20 |
| [ 279.194950] do_syscall_64+0x58/0x120 |
| [ 279.194954] entry_SYSCALL_64_after_hwframe+0x6e/0x76 |
| [ 279.194980] </TASK> |
| |
| The Linux kernel CVE team has assigned CVE-2024-49989 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.15.181 with commit 43c296870740a3a264cdca9f18db12e12e9cfbdb |
| Fixed in 6.1.129 with commit df948b5ba6858d5da34f622d408e5517057cec07 |
| Fixed in 6.6.55 with commit cf6f3ebd6312d465fee096d1f58089b177c7c67f |
| Fixed in 6.10.14 with commit 7af9e6fa63dbd43a61d4ecc8f59426596a75e507 |
| Fixed in 6.11.3 with commit 3c0ff4de45ce2c5f7997a1ffa6eefee4b79e6b58 |
| Fixed in 6.12 with commit 20b5a8f9f4670a8503aa9fa95ca632e77c6bf55d |
| |
| 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-2024-49989 |
| 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/gpu/drm/amd/display/dc/link/link_factory.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/43c296870740a3a264cdca9f18db12e12e9cfbdb |
| https://git.kernel.org/stable/c/df948b5ba6858d5da34f622d408e5517057cec07 |
| https://git.kernel.org/stable/c/cf6f3ebd6312d465fee096d1f58089b177c7c67f |
| https://git.kernel.org/stable/c/7af9e6fa63dbd43a61d4ecc8f59426596a75e507 |
| https://git.kernel.org/stable/c/3c0ff4de45ce2c5f7997a1ffa6eefee4b79e6b58 |
| https://git.kernel.org/stable/c/20b5a8f9f4670a8503aa9fa95ca632e77c6bf55d |
