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:...

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...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-990819)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990819 advisory. In the Linux kernel, the following vulnerability has been resolved: blkiocost: fix more out of bound shifts Recently running UBSAN caught few out of bound shifts in...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989769)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989769 advisory. In the Linux kernel, the following vulnerability has been resolved: blk-iocost: avoid out of bounds shift UBSAN catches undefined behavior in blk-iocost, where...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989797)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989797 advisory. In the Linux kernel, the following vulnerability has been resolved: iocost: Fix divide-by-zero on donation from low hweight cgroup The donation calculation logic...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990325)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990325 advisory. In the Linux kernel, the following vulnerability has been resolved: blk-iocost: avoid out of bounds shift UBSAN catches undefined behavior in blk-iocost, where...

Siemens SIMATIC Devices Out-of-bounds Write (CVE-2024-36916)

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: avoid out of bounds shift UBSAN catches undefined behavior in blk-iocost, where sometimes iocg-delay is shifted right by a number that is too large, resulting in undefined behavior on some architectures. 186.556576...

SUSE CVE-2023-53730

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: use spinlockirqsave in adjustinuseandcalccost adjustinuseandcalccost use spinlockirq and IRQ will be enabled when unlock. DEADLOCK might happen if we have held other locks and disabled IRQ before invoking it. Fix it b...

CVE-2023-53730

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: use spinlockirqsave in adjustinuseandcalccost adjustinuseandcalccost use spinlockirq and IRQ will be enabled when unlock. DEADLOCK might happen if we have held other locks and disabled IRQ before invoking it. Fix it b...

UBUNTU-CVE-2023-53730

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: use spinlockirqsave in adjustinuseandcalccost adjustinuseandcalccost use spinlockirq and IRQ will be enabled when unlock. DEADLOCK might happen if we have held other locks and disabled IRQ before invoking it. Fix it b...

CVE-2023-53730

CVE-2023-53730 : In the Linux kernel, the blk-iocost code path uses spin_lock_irq() when acquiring bfqd-related locks in adjust_inuse_and_calc_cost(), which can leave IRQ state inconsistent and lead to a potential deadlock if other locks are held and IRQ is disabled before unlocking. The fix swit...

CVE-2023-53730 blk-iocost: use spin_lock_irqsave in adjust_inuse_and_calc_cost

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: use spinlockirqsave in adjustinuseandcalccost adjustinuseandcalccost use spinlockirq and IRQ will be enabled when unlock. DEADLOCK might happen if we have held other locks and disabled IRQ before invoking it. Fix it b...

PT-2025-43131

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.10.0-02758-g8e5f91fd772f 26 Description The Linux kernel contained a flaw within the block I/O cost blk-iocost subsystem. Specifically, the adjust inuse and calc cost function utilized spin lock irq and enabled...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987239)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-987239 advisory. In the Linux kernel, the following vulnerability has been resolved: iocost: Fix divide-by-zero on donation from low hweight cgroup The donation calculation logic...

EUVD-2024-36259

Malicious code in bioql PyPI...

The vulnerability of the iocg_pay_debt() function in the block/blk-iocost.c module, which supports the block-level kernel in the Linux operating system. This vulnerability allows an attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the iocgpaydebt function in the block/blk-iocost.c module, which supports the block-level kernel in the Linux operating system, is related to incorrect validation of input data. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity...