CVE-2024-44982

drm/msm/dpu: cleanup FB if dpu_format_populate_layout fails

Description

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/

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.06%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/9b8b65211a880af8fe8330a101e1e239a2d4008f patch
https://git.kernel.org/stable/c/7ecf85542169012765e4c2817cd3be6c2e009962 patch
https://git.kernel.org/stable/c/a3c5815b07f4ee19d0b7e2ddf91ff9f03ecbf27d patch
https://git.kernel.org/stable/c/02193c70723118889281f75b88722b26b58bf4ae patch
https://git.kernel.org/stable/c/bfa1a6283be390947d3649c482e5167186a37016 patch

Frequently Asked Questions

What is the severity of CVE-2024-44982?
CVE-2024-44982 has been scored as a medium severity vulnerability.
How to fix CVE-2024-44982?
To fix CVE-2024-44982, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-44982 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-44982 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-44982?
CVE-2024-44982 affects Linux Linux, Linux Linux.
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