CVE-2023-52837
nbd: fix uaf in nbd_open
Vexday Risk Score
3Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
21 may 2024Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
In the Linux kernel, the following vulnerability has been resolved:
nbd: fix uaf in nbd_open
Commit 4af5f2e03013 ("nbd: use blk_mq_alloc_disk and
blk_cleanup_disk") cleans up disk by blk_cleanup_disk() and it won't set
disk->private_data as NULL as before. UAF may be triggered in nbd_open()
if someone tries to open nbd device right after nbd_put() since nbd has
been free in nbd_dev_remove().
Fix this by implementing ->free_disk and free private data in it.
Productos afectados
Linux · Linux