PT-2026-52958 · Undefined · Undefined
Publicado
2026-06-26
·
Atualizado
2026-06-26
·
CVE-2026-53319
Nenhuma
Não há classificações de severidade ou métricas disponíveis. Quando houver, atualizaremos as informações correspondentes na página.
In the Linux kernel, the following vulnerability has been resolved:
blk-wbt: remove WARN ON ONCE from wbt init enable default()
wbt init enable default() uses WARN ON ONCE to check for failures from
wbt alloc() and wbt init(). However, both are expected failure paths:
- wbt alloc() can return NULL under memory pressure (-ENOMEM)
- wbt init() can fail with -EBUSY if wbt is already registered
syzbot triggers this by injecting memory allocation failures during MTD
partition creation via ioctl(BLKPG), causing a spurious warning.
wbt init enable default() is a best-effort initialization called from
blk register queue() with a void return type. Failure simply means the
disk operates without writeback throttling, which is harmless.
Replace WARN ON ONCE with plain if-checks, consistent with how
wbt set lat() in the same file already handles these failures. Add a
pr warn() for the wbt init() failure to retain diagnostic information
without triggering a full stack trace.
Encontrou algum problema na descrição? Tem algo a acrescentar? Fique à vontade para nos escrever 👾
Identificadores relacionados
Produtos afetados
Undefined