CVE-2023-53783 — Divide By Zero in Linux

CWE-369 — Divide By Zero6 documents5 sources
Severity
5.5MEDIUM
No vector
EPSS
0.0%
top 85.68%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedDec 9

Description

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calc_lcoefs() 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: 0010:calc_lcoefs+0x4c/0xc0 Call Trace: ioc_refresh_params+0x2b3/0x4f0 ioc_cost_model_write+0x3cb/0x4c0 ? _copy_from_iter+0x6d/0x6c0 ? kernfs_fop_write_iter+0xfc/0x270 cgroup_file_write+0xa0/0x200 kernfs_fop_w…

Affected Packages4 packages

▶Linuxlinux/linux_kernel5.4.0 — 5.4.235+4
▶Debianlinux/linux_kernel< 5.10.178-1+3
▶CVEListV5linux/linux7caa47151ab2e644dd221f741ec7578d9532c9a3 — 9e8bf9f95f7a299fa9ea45b678d001806ad5e12c+6
▶debiandebian/linux< linux 6.1.20-1 (bookworm)

🔴Vulnerability Details

3
GHSA
GHSA-6wcv-9326-m4qg: In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calc_lcoefs() echo max of u64 to cost↗2025-12-09
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OSV
blk-iocost: fix divide by 0 error in calc_lcoefs()↗2025-12-09
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OSV
CVE-2023-53783: In the Linux kernel, the following vulnerability has been resolved: blk-iocost: fix divide by 0 error in calc_lcoefs() echo max of u64 to cost↗2025-12-09
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📋Vendor Advisories

2
Red Hat
kernel: blk-iocost: fix divide by 0 error in calc_lcoefs()↗2025-12-09
▶
Debian
CVE-2023-53783: linux - In the Linux kernel, the following vulnerability has been resolved: blk-iocost:...↗2023
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