posixshm: system calls can incorrectly free memory of largepage objects
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.4epss 0.3%
probabilidade de exploração
0.3%top 78% das CVEs
exploração observada
nãonenhuma fonte reporta
Certain system calls, such open(2) with the O_TRUNC flag set, and fspacectl(2), could incorrectly free memory in largepage objects. These operations are not permitted on largepage objects, but the implementation did not verify this.
An unprivileged local user can abuse the bug to access freed kernel memory. This can be exploited to escalate privileges.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Produtos afetados
FreeBSD · FreeBSD