CVE-2024-44982

drm/msm/dpu: cleanup FB if dpu_format_populate_layout fails

MEDIUM

5.5

CVSS Score

Published: September 4, 2024 at 07:54 PM UTC

Updated: June 17, 2026 at 07:53 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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/

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.19 ≤ v < 5.15.1664.19 ≤ v < 6.1.1074.19 ≤ v < 6.10.74.19 ≤ v < 6.114.19 ≤ v < 6.6.485.16 ≤ v < 6.1.1076.2 ≤ v < 6.6.486.7 ≤ v < 6.10.725fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef6.11 rc1 6.11 rc2 6.11 rc3 6.11 rc4

Vendor states this is fixed in 02193c70723118889281f75b88722b26b58bf4ae (fixed)

Vendor states this is fixed in 7ecf85542169012765e4c2817cd3be6c2e009962 (fixed)

Vendor states this is fixed in 9b8b65211a880af8fe8330a101e1e239a2d4008f (fixed)

Vendor states this is fixed in a3c5815b07f4ee19d0b7e2ddf91ff9f03ecbf27d (fixed)

Vendor states this is fixed in bfa1a6283be390947d3649c482e5167186a37016 (fixed)

Vendor states this is fixed in 4.19 (unaffected)

Vendor states this is fixed in 5.15.166 (unaffected)

Vendor states this is fixed in 6.1.107 (unaffected)

Vendor states this is fixed in 6.10.7 (unaffected)

Vendor states this is fixed in 6.11 (unaffected)

Vendor states this is fixed in 6.6.48 (unaffected)