CVE-2024-44982: drm/msm/dpu: cleanup FB if dpu_format_populate_layout fails
First published: Wed Sep 04 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/msm/dpu: cleanup FB if dpu_format_populate_layout fails If the dpu_format_populate_layout() fails, then FB is prepared, but not cleaned up. This ends up leaking the pin_count on the GEM object and causes a splat during DRM file closure: msm_obj->pin_count WARNING: CPU: 2 PID: 569 at drivers/gpu/drm/msm/msm_gem.c:121 update_lru_locked+0xc4/0xcc [...] Call trace: update_lru_locked+0xc4/0xcc put_pages+0xac/0x100 msm_gem_free_object+0x138/0x180 drm_gem_object_free+0x1c/0x30 drm_gem_object_handle_put_unlocked+0x108/0x10c drm_gem_object_release_handle+0x58/0x70 idr_for_each+0x68/0xec drm_gem_release+0x28/0x40 drm_file_free+0x174/0x234 drm_release+0xb0/0x160 __fput+0xc0/0x2c8 __fput_sync+0x50/0x5c __arm64_sys_close+0x38/0x7c invoke_syscall+0x48/0x118 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x4c/0x120 el0t_64_sync_handler+0x100/0x12c el0t_64_sync+0x190/0x194 irq event stamp: 129818 hardirqs last enabled at (129817): [<ffffa5f6d953fcc0>] console_unlock+0x118/0x124 hardirqs last disabled at (129818): [<ffffa5f6da7dcf04>] el1_dbg+0x24/0x8c softirqs last enabled at (129808): [<ffffa5f6d94afc18>] handle_softirqs+0x4c8/0x4e8 softirqs last disabled at (129785): [<ffffa5f6d94105e4>] __do_softirq+0x14/0x20 Patchwork: https://patchwork.freedesktop.org/patch/600714/
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=4.19<5.15.166 | |
| Linux Linux kernel | >=5.16<6.1.107 | |
| Linux Linux kernel | >=6.2<6.6.48 | |
| Linux Linux kernel | >=6.7<6.10.7 | |
| Linux Linux kernel | =6.11-rc1 | |
| Linux Linux kernel | =6.11-rc2 | |
| Linux Linux kernel | =6.11-rc3 | |
| Linux Linux kernel | =6.11-rc4 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.115-1 6.1.112-1 6.11.7-1 6.11.9-1 |
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Reference Links
- https://git.kernel.org/stable/c/02193c70723118889281f75b88722b26b58bf4ae
- https://git.kernel.org/stable/c/7ecf85542169012765e4c2817cd3be6c2e009962
- https://git.kernel.org/stable/c/9b8b65211a880af8fe8330a101e1e239a2d4008f
- https://git.kernel.org/stable/c/a3c5815b07f4ee19d0b7e2ddf91ff9f03ecbf27d
- https://git.kernel.org/stable/c/bfa1a6283be390947d3649c482e5167186a37016
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-44982
- https://nvd.nist.gov/vuln/detail/CVE-2024-44982
- https://launchpad.net/bugs/cve/CVE-2024-44982
- https://security-tracker.debian.org/tracker/CVE-2024-44982
- https://ubuntu.com/security/CVE-2024-44982
- https://git.kernel.org/linus/bfa1a6283be390947d3649c482e5167186a37016
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