SUSE CVE-2025-68291

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialise rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported divide-by-zero in tcpselectwindow by MPTCP socket. 0 We had a similar issue for the bare TCP and fixed in commit 499350a5a6e7 "tcp:...

AZL-74172 CVE-2025-68291 affecting package kernel for versions less than 6.6.121.1-1

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialise rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported divide-by-zero in tcpselectwindow by MPTCP socket. 0 We had a similar issue for the bare TCP and fixed in commit 499350a5a6e7 "tcp:...

UBUNTU-CVE-2025-68291

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialise rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported divide-by-zero in tcpselectwindow by MPTCP socket. 0 We had a similar issue for the bare TCP and fixed in commit 499350a5a6e7 "tcp:...

CVE-2025-68291

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialise rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported divide-by-zero in tcpselectwindow by MPTCP socket. 0 We had a similar issue for the bare TCP and fixed in commit 499350a5a6e7 "tcp:...

CVE-2025-68291 mptcp: Initialise rcv_mss before calling tcp_send_active_reset() in mptcp_do_fastclose().

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialise rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported divide-by-zero in tcpselectwindow by MPTCP socket. 0 We had a similar issue for the bare TCP and fixed in commit 499350a5a6e7 "tcp:...

CVE-2023-53783

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calclcoefs echo max of u64 to cost.model can cause divide by 0 error. echo 8:0 rbps=18446744073709551615 /sys/fs/cgroup/io.cost.model divide error: 0000 1 PREEMPT SMP RIP:...

Linux Distros Unpatched Vulnerability : CVE-2023-53783

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - blk-iocost: fix divide by 0 error in calclcoefs echo max of u64 to cost.model can cause divide by 0 error. echo 8:0 rbps=18446744073709551615...

EUVD-2023-60123

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calclcoefs echo max of u64 to cost.model can cause divide by 0 error. echo 8:0 rbps=18446744073709551615 /sys/fs/cgroup/io.cost.model divide error: 0000 1 PREEMPT SMP RIP:...

DEBIAN-CVE-2023-53783

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calclcoefs echo max of u64 to cost.model can cause divide by 0 error. echo 8:0 rbps=18446744073709551615 /sys/fs/cgroup/io.cost.model divide error: 0000 1 PREEMPT SMP RIP:...

CVE-2023-53783

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calclcoefs echo max of u64 to cost.model can cause divide by 0 error. echo 8:0 rbps=18446744073709551615 /sys/fs/cgroup/io.cost.model divide error: 0000 1 PREEMPT SMP RIP:...

UBUNTU-CVE-2023-53783

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calclcoefs echo max of u64 to cost.model can cause divide by 0 error. echo 8:0 rbps=18446744073709551615 /sys/fs/cgroup/io.cost.model divide error: 0000 1 PREEMPT SMP RIP:...

CVE-2023-53783 blk-iocost: fix divide by 0 error in calc_lcoefs()

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calclcoefs echo max of u64 to cost.model can cause divide by 0 error. echo 8:0 rbps=18446744073709551615 /sys/fs/cgroup/io.cost.model divide error: 0000 1 PREEMPT SMP RIP:...

CVE-2023-53783

The CVE-2023-53783 issue affects the Linux kernel’s blk-iocost cost model: calc_lcoefs() can divide by zero when the input cost.model overflows ULLONG_MAX, triggered by large values (e.g., echoing a max u64 to /sys/fs/cgroup/io.cost.model). The root cause is an overflow in DIV_ROUND_UP_ULL used i...

CVE-2023-53783 blk-iocost: fix divide by 0 error in calc_lcoefs()

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calclcoefs echo max of u64 to cost.model can cause divide by 0 error. echo 8:0 rbps=18446744073709551615 /sys/fs/cgroup/io.cost.model divide error: 0000 1 PREEMPT SMP RIP:...

CVE-2023-53783

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calclcoefs echo max of u64 to cost.model can cause divide by 0 error. echo 8:0 rbps=18446744073709551615 /sys/fs/cgroup/io.cost.model divide error: 0000 1 PREEMPT SMP RIP:...

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 the Linux kernel that stems from a divide-by-zero error in the calclcoefs function...

PT-2025-49643

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw in the block I/O cost model calc lcoefs function that can lead to a divide-by-zero error. This occurs when a maximum value is echoed to the cost.model...

DEBIAN-CVE-2025-40293

In the Linux kernel, the following vulnerability has been resolved: iommufd: Don't overflow during division for dirty tracking If pgshift is 63 then BITSPERTYPEbitmap-bitmap pgsize will overflow to 0 and this triggers divide by 0. In this case the index should just be 0, so reorganize things to...

CVE-2025-40293

In the Linux kernel, the following vulnerability has been resolved: iommufd: Don't overflow during division for dirty tracking If pgshift is 63 then BITSPERTYPEbitmap-bitmap pgsize will overflow to 0 and this triggers divide by 0. In this case the index should just be 0, so reorganize things to...

CVE-2025-40293

CVE-2025-40293 : Linux kernel iommufd had a division-by-zero risk when calculating dirty-tracking bitmap indices if pgshift == 63, caused by an overflow in computing BITS_PER_TYPE(*bitmap->bitmap) * pgsize. The fix reorganizes the division to divide by shift instead of overflowing, preventing ...