CVE-2025-39731 in Linux
Sumário
de VulDB • 30/05/2026
No kernel do Linux, a seguinte vulnerabilidade foi resolvida:
f2fs: vm_unmap_ram() pode ser chamado de um contexto inválido
Ao testar o F2FS com xfstests usando discos virtuais com suporte UFS, o kernel às vezes reclama que f2fs_release_decomp_mem() chama vm_unmap_ram() de um contexto inválido. Exemplo de rastreamento do teste f2fs/007:
f2fs/007 5s ... [12:59:38][ 8.902525] run fstests f2fs/007
[ 11.468026] BUG: sleeping function called from invalid context at mm/vmalloc.c:2978
[ 11.471849] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 68, name: irq/22-ufshcd
[ 11.475357] preempt_count: 1, expected: 0
[ 11.476970] RCU nest depth: 0, expected: 0
[ 11.478531] CPU: 0 UID: 0 PID: 68 Comm: irq/22-ufshcd Tainted: G W 6.16.0-rc5-xfstests-ufs-g40f92e79b0aa #9 PREEMPT(none)
[ 11.478535] Tainted: [W]=WARN
[ 11.478536] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 11.478537] Call Trace:
[ 11.478543] <TASK>
[ 11.478544] dump_stack_lvl+0x59/0x80
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