CVE-2025-39822 io_uring/kbuf: fix signedness in this_len calculation

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: fix signedness in thislen calculation When importing and using buffers, buf-len is considered unsigned. However, buf-len is converted to signed int when committing. This can lead to unexpected behavior if the buffer...

CVE-2025-39822 io_uring/kbuf: fix signedness in this_len calculation

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: fix signedness in thislen calculation When importing and using buffers, buf-len is considered unsigned. However, buf-len is converted to signed int when committing. This can lead to unexpected behavior if the buffer...

CVE-2025-39816 io_uring/kbuf: always use READ_ONCE() to read ring provided buffer lengths

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: always use READONCE to read ring provided buffer lengths Since the buffers are mapped from userspace, it is prudent to use READONCE to read the value into a local variable, and use that for any other actions taken...

CVE-2025-39816

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: always use READONCE to read ring provided buffer lengths Since the buffers are mapped from userspace, it is prudent to use READONCE to read the value into a local variable, and use that for any other actions taken...

CVE-2025-39816

CVE-2025-39816 pertains to the Linux kernel’s io_uring/kbuf path. The issue stems from reading ring-provided buffer lengths without a stable read, risking changes between checks and commits since buffers come from userspace. The fix mandates using READ_ONCE() when reading these lengths and tighte...

CVE-2025-39816 io_uring/kbuf: always use READ_ONCE() to read ring provided buffer lengths

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: always use READONCE to read ring provided buffer lengths Since the buffers are mapped from userspace, it is prudent to use READONCE to read the value into a local variable, and use that for any other actions taken...

SUSE CVE-2022-50295

In the Linux kernel, the following vulnerability has been resolved: iouring/msgring: Fix NULL pointer dereference in iomsgsendfd Syzkaller produced the below call trace: BUG: KASAN: null-ptr-deref in iomsgring+0x3cb/0x9f0 Write of size 8 at addr 0000000000000070 by task repro/16399 CPU: 0 PID:...

CVE-2022-50295

In the Linux kernel, the following vulnerability has been resolved: iouring/msgring: Fix NULL pointer dereference in iomsgsendfd Syzkaller produced the below call trace: BUG: KASAN: null-ptr-deref in iomsgring+0x3cb/0x9f0 Write of size 8 at addr 0000000000000070 by task repro/16399 CPU: 0 PID:...

DEBIAN-CVE-2022-50295

In the Linux kernel, the following vulnerability has been resolved: iouring/msgring: Fix NULL pointer dereference in iomsgsendfd Syzkaller produced the below call trace: BUG: KASAN: null-ptr-deref in iomsgring+0x3cb/0x9f0 Write of size 8 at addr 0000000000000070 by task repro/16399 CPU: 0 PID:...

UBUNTU-CVE-2022-50295

In the Linux kernel, the following vulnerability has been resolved: iouring/msgring: Fix NULL pointer dereference in iomsgsendfd Syzkaller produced the below call trace: BUG: KASAN: null-ptr-deref in iomsgring+0x3cb/0x9f0 Write of size 8 at addr 0000000000000070 by task repro/16399 CPU: 0 PID:...

CVE-2022-50295 io_uring/msg_ring: Fix NULL pointer dereference in io_msg_send_fd()

In the Linux kernel, the following vulnerability has been resolved: iouring/msgring: Fix NULL pointer dereference in iomsgsendfd Syzkaller produced the below call trace: BUG: KASAN: null-ptr-deref in iomsgring+0x3cb/0x9f0 Write of size 8 at addr 0000000000000070 by task repro/16399 CPU: 0 PID:...

CVE-2022-50295

CVE-2022-50295: In the Linux kernel io_uring/msg_ring path, a NULL pointer dereference occurs in io_msg_send_fd() when file_ptr is NULL, causing src_file to be NULL and get_file() to dereference a NULL pointer and trigger a crash. The issue was fixed by adding a NULL check in io_msg_send_fd(), pr...

CVE-2022-50295 io_uring/msg_ring: Fix NULL pointer dereference in io_msg_send_fd()

In the Linux kernel, the following vulnerability has been resolved: iouring/msgring: Fix NULL pointer dereference in iomsgsendfd Syzkaller produced the below call trace: BUG: KASAN: null-ptr-deref in iomsgring+0x3cb/0x9f0 Write of size 8 at addr 0000000000000070 by task repro/16399 CPU: 0 PID:...

DEBIAN-CVE-2022-50234

In the Linux kernel, the following vulnerability has been resolved: iouring/afunix: defer registered files gc to iouring release Instead of putting iouring's registered files in unixgc we want it to be done by iouring itself. The trick here is to consider iouring registered files for cycle...

CVE-2022-50234

In the Linux kernel, the following vulnerability has been resolved: iouring/afunix: defer registered files gc to iouring release Instead of putting iouring's registered files in unixgc we want it to be done by iouring itself. The trick here is to consider iouring registered files for cycle...

UBUNTU-CVE-2022-50234

In the Linux kernel, the following vulnerability has been resolved: iouring/afunix: defer registered files gc to iouring release Instead of putting iouring's registered files in unixgc we want it to be done by iouring itself. The trick here is to consider iouring registered files for cycle...

CVE-2022-50234

CVE-2022-50234 concerns the Linux kernel’s io_uring/af_unix subsystem. The vulnerability arises from deferring the garbage-collection of registered files to the io_uring release path rather than performing it via unix_gc(), coupled with using these registered files for cycle-detection without act...

CVE-2022-50234 io_uring/af_unix: defer registered files gc to io_uring release

In the Linux kernel, the following vulnerability has been resolved: iouring/afunix: defer registered files gc to iouring release Instead of putting iouring's registered files in unixgc we want it to be done by iouring itself. The trick here is to consider iouring registered files for cycle...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from not properly handling garbage collection of iouring registered files, which could lead to a memory leak...

CVE-2025-39793

In the Linux kernel, the following vulnerability has been resolved: iouring/memmap: cast nrpages to sizet before shifting If the allocated size exceeds UINTMAX, then it's necessary to cast the mr-nrpages value to sizet to prevent it from overflowing. In practice this isn't much of a concern as th...