In the Linux kernel, the following vulnerability has been resolved:
drm/connector: hdmi: Fix memory leak in drm_display_mode_from_cea_vic()
modprobe drm_connector_test and then rmmod drm_connector_test, the following memory leak occurs.
The `mode` allocated in drm_mode_duplicate() called by drm_display_mode_from_cea_vic() is not freed, which cause the memory leak:
unreferenced object 0xffffff80cb0ee400 (size 128): comm "kunit_try_catch", pid 1948, jiffies 4294950339 hex dump (first 32 bytes): 14 44 02 00 80 07 d8 07 04 08 98 08 00 00 38 04 .D............8. 3c 04 41 04 65 04 00 00 05 00 00 00 00 00 00 00 <.A.e........... backtrace (crc 90e9585c): [<00000000ec42e3d7>] kmemleak_alloc+0x34/0x40 [<00000000d0ef055a>] __kmalloc_cache_noprof+0x26c/0x2f4 [<00000000c2062161>] drm_mode_duplicate+0x44/0x19c [<00000000f96c74aa>] drm_display_mode_from_cea_vic+0x88/0x98 [<00000000d8f2c8b4>] 0xffffffdc982a4868 [<000000005d164dbc>] kunit_try_run_case+0x13c/0x3ac [<000000006fb23398>] kunit_generic_run_threadfn_adapter+0x80/0xec [<000000006ea56ca0>] kthread+0x2e8/0x374 [<000000000676063f>] ret_from_fork+0x10/0x20 ......
Free `mode` by using drm_kunit_display_mode_from_cea_vic() to fix it.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Ubuntu | — | Upgrade linux-image-azureUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.11.0-1015-oemUpgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-oem-24.04Upgrade linux-image-gcpUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-virtualUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-realtimeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-azure-fdeUpgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-awsUpgrade linux-image-raspiUpgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-oracleUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-genericUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-oem-24.04bUpgrade linux-image-generic-64kUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-lowlatencyUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.11.0-1005-realtime | Feb 20, 2025 | Nov 9, 2024 |
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