CVE-2024-43901 in Linux
Zusammenfassung
von VulDB • 02.06.2026
Im Linux-Kernel wurde folgende Schwachstelle behoben:
drm/amd/display: Behebung der NULL-Zeiger-Dereferenzierung für das DTN-Log in DCN401
Wenn Benutzer den folgenden Befehl ausführen:
cat /sys/kernel/debug/dri/0/amdgpu_dm_dtn_log
tritt die folgende NULL-Zeiger-Dereferenzierung auf:
[ +0.000003] BUG: kernel NULL pointer dereference, address: NULL
[ +0.000005] #PF: supervisor instruction fetch in kernel mode
[ +0.000002] #PF: error_code(0x0010) - not-present page
[ +0.000002] PGD 0 P4D 0
[ +0.000004] Oops: 0010 [#1] PREEMPT SMP NOPTI
[ +0.000003] RIP: 0010:0x0
[ +0.000008] Code: Unable to access opcode bytes at 0xffffffffffffffd6.
[...]
[ +0.000002] PKRU: 55555554
[ +0.000002] Call Trace:
[ +0.000002]
[ +0.000003] ? show_regs+0x5c/0x70
[ +0.000003] ? __die_body.cold+0x8/0xd
[ +0.000003] ? die+0x31/0x70
[ +0.000003] ? __do_fault+0x10/0x50
[ +0.000003] ? do_user_addr_fault+0x1c3/0x660
[ +0.000003] ? exc_page_fault+0x7e/0x170
[ +0.000003] ? asm_exc_page_fault+0x1e/0x30
[ +0.000003] ? debug_smp_processor_id+0x17/0x20
[ +0.000003] ? srso_alias_return_thunk+0x5/0xfbef5
[ +0.000002] ? srso_alias_return_thunk+0x5/0xfbef5
[ +0.000002] ? set_ptes.isra.0+0x2b/0x90
[ +0.000004] ? srso_alias_return_thunk+0x5/0xfbef5
[ +0.000002] ? _raw_spin_unlock+0x19/0x40
[ +0.000004] ? srso_alias_return_thunk+0x5/0xfbef5
[ +0.000002] ? do_anonymous_page+0x337/0x70
[ +0.000004] dtn_log_read+0x82/0x120 [amdgpu]
[ +0.000207] full_proxy_read+0x66/0x90
[ +0.000007] vfs_read+0xb0/0x340
[ +0.000005] ? __count_memcg_events+0x79/0xe0
[ +0.000002] ? srso_alias_return_thunk+0x5/0xfbef5
[ +0.000003] ? count_memcg_events.constprop.0+0x1e/0x40
[ +0.000003] ? handle_mm_fault+0xb2/0x370
[ +0.000003] ksys_read+0x6b/0xf0
[ +0.000004] __x64_sys_read+0x19/0x20
[ +0.000003] do_syscall_64+0x60/0x130
[ +0.000004] entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ +0.000003] RIP: 0033:0x7fdf32f147e2
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