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

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 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 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...

PT-2025-37967

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel’s io uring/kbuf subsystem related to signedness in the this len calculation. When importing and using buffers, the buf-len value is treated as unsigned...

CVE-2025-39816: Undefined Security Weakness

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-2025-39822: Undefined Security Weakness

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...

Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: CVE-2024-27415: netfilter: brnetfilter: skip conntrack input hook for promisc packets bsc1224757. CVE-2024-50038: netfilter: xtables: fix typo causing so...

SUSE-SU-2025:20206-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2024-27415: netfilter: brnetfilter: skip conntrack input hook for promisc packets bsc1224757. - CVE-2024-50038: netfilter: xtables: fix typo causin...

SUSE-SU-2025:20283-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2024-27415: netfilter: brnetfilter: skip conntrack input hook for promisc packets bsc1224757. - CVE-2024-50038: netfilter: xtables: fix typo causin...

SUSE CVE-2025-21836

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: reallocate buf lists on upgrade IORINGREGISTERPBUFRING can reuse an old struct iobufferlist if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field shoul...

CVE-2025-21836

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: reallocate buf lists on upgrade IORINGREGISTERPBUFRING can reuse an old struct iobufferlist if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field shoul...

CVE-2025-21836: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: reallocate buf lists on upgrade IORINGREGISTERPBUFRING can reuse an old struct iobufferlist if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field shoul...

SUSE CVE-2024-35880

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: hold iobufferlist reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the iouring lock. Rely on the fact...

CVE-2024-35880

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: hold iobufferlist reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the iouring lock. Rely on the fact...

CVE-2024-35880

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: hold iobufferlist reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the iouring lock. Rely on the fact...

DEBIAN-CVE-2024-35880

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: hold iobufferlist reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the iouring lock. Rely on the fact...

UBUNTU-CVE-2024-35880

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: hold iobufferlist reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the iouring lock. Rely on the fact...

CVE-2024-35880

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: hold iobufferlist reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the iouring lock. Rely on the fact...