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Test your applicationsUpgrade RHEL:9
kernel-64k-core
to version 0:5.14.0-503.11.1.el9_5 or higher.
This issue was patched in RHSA-2024:9315
.
Note: Versions mentioned in the description apply only to the upstream kernel-64k-core
package and not the kernel-64k-core
package as distributed by RHEL
.
See How to fix?
for RHEL:9
relevant fixed versions and status.
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.