Amazon Linux 2 : kernel (ALASKERNEL-5.4-2024-063)

The version of kernel installed on the remote host is prior to 5.4.110-54.189. It is, therefore, affected by a vulnerability as referenced in the ALAS2KERNEL-5.4-2024-063 advisory. In the Linux kernel, the following vulnerability has been resolved: locking/qrwlock: Fix ordering in...

CVE-2021-46921

In the Linux kernel, the following vulnerability has been resolved: locking/qrwlock: Fix ordering in queuedwritelockslowpath While this code is executed with the waitlock held, a reader can acquire the lock without holding waitlock. The writer side loops checking the value with the...

CVE-2021-46921

In the Linux kernel, the following vulnerability has been resolved: locking/qrwlock: Fix ordering in queuedwritelockslowpath While this code is executed with the waitlock held, a reader can acquire the lock without holding waitlock. The writer side loops checking the value with the...

Spoofing

In the Linux kernel, the following vulnerability has been resolved: locking/qrwlock: Fix ordering in queuedwritelockslowpath While this code is executed with the waitlock held, a reader can acquire the lock without holding waitlock. The writer side loops checking the value with the...

CVE-2021-46921

In the Linux kernel, the following vulnerability has been resolved: locking/qrwlock: Fix ordering in queuedwritelockslowpath While this code is executed with the waitlock held, a reader can acquire the lock without holding waitlock. The writer side loops checking the value with the...

CVE-2021-46921 locking/qrwlock: Fix ordering in queued_write_lock_slowpath()

In the Linux kernel, the following vulnerability has been resolved: locking/qrwlock: Fix ordering in queuedwritelockslowpath While this code is executed with the waitlock held, a reader can acquire the lock without holding waitlock. The writer side loops checking the value with the...

CVE-2021-46921 locking/qrwlock: Fix ordering in queued_write_lock_slowpath()

In the Linux kernel, the following vulnerability has been resolved: locking/qrwlock: Fix ordering in queuedwritelockslowpath While this code is executed with the waitlock held, a reader can acquire the lock without holding waitlock. The writer side loops checking the value with the...

CVE-2021-46921

CVE-2021-46921 affects the Linux kernel’s locking/qrwlock code. The vulnerability arises in queued_write_lock_slowpath while the wait_lock is held: a reader can observe values before the writer has truly acquired the lock, due to an ordering gap between atomic_cond_read_acquire() and the subseque...