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CVE-2023-53783: Linux kernel I/O cost model can cause divide-by-zero
CVE-2023-53783 · published 11 months ago
Summary
The Linux kernel used in several Canonical Linux distributions can crash if an extremely large value is written to the I/O cost model setting. This overflow leads to a divide‑by‑zero error that may stop the system or affect storage performance. Update to the latest kernel version that includes the fix, or avoid setting the cost model to values larger than the normal range.
What to do
- Update canonical linux-aws-5.4 to version 5.4.0-1104.112~18.04.1.
- Update canonical linux-azure-5.4 to version 5.4.0-1110.116~18.04.1.
- Update canonical linux-gcp-5.4 to version 5.4.0-1107.116~18.04.1.
- Update canonical linux-hwe-5.4 to version 5.4.0-152.169~18.04.1.
- Update canonical linux-ibm-5.4 to version 5.4.0-1051.56~18.04.1.
- Update canonical linux-oracle-5.4 to version 5.4.0-1103.112~18.04.1.
- Update canonical linux-raspi-5.4 to version 5.4.0-1088.99~18.04.1.
- Update canonical linux to version 5.4.0-152.169.
- Update canonical linux-aws to version 5.4.0-1104.112.
- Update canonical linux-aws-5.15 to version 5.15.0-1038.43~20.04.1.
- Update canonical linux-azure to version 5.4.0-1110.116.
- Update canonical linux-azure-5.15 to version 5.15.0-1040.47~20.04.1.
- Update canonical linux-bluefield to version 5.4.0-1065.71.
- Update canonical linux-gcp to version 5.4.0-1107.116.
- Update canonical linux-gcp-5.15 to version 5.15.0-1036.44~20.04.1.
- Update canonical linux-hwe-5.15 to version 5.15.0-75.82~20.04.1.
- Update canonical linux-ibm to version 5.4.0-1051.56.
- Update canonical linux-intel-iotg-5.15 to version 5.15.0-1033.38~20.04.1.
- Update canonical linux-iot to version 5.4.0-1017.18.
- Update canonical linux-kvm to version 5.4.0-1093.99.
- Update canonical linux-lowlatency-hwe-5.15 to version 5.15.0-75.82~20.04.1.
- Update canonical linux-nvidia-tegra-5.15 to version 5.15.0-1015.15~20.04.1.
- Update canonical linux-oracle to version 5.4.0-1103.112.
- Update canonical linux-oracle-5.15 to version 5.15.0-1037.43~20.04.1.
- Update canonical linux-raspi to version 5.4.0-1088.99.
- Update canonical linux-riscv-5.15 to version 5.15.0-1035.39~20.04.1.
- Update canonical linux-xilinx-zynqmp to version 5.4.0-1024.28.
- Update canonical linux-aws-fips to version 5.4.0-1104.112+fips1.
- Update canonical linux-azure-fips to version 5.4.0-1110.116+fips1.
- Update canonical linux-fips to version 5.4.0-1079.88.
- Update canonical linux-gcp-fips to version 5.4.0-1107.116+fips1.
- Update canonical linux to version 5.15.0-75.82.
- Update canonical linux-aws to version 5.15.0-1038.43.
- Update canonical linux-azure to version 5.15.0-1040.47.
- Update canonical linux-gcp to version 5.15.0-1036.44.
- Update canonical linux-gke to version 5.15.0-1036.41.
- Update canonical linux-gkeop to version 5.15.0-1022.27.
- Update canonical linux-ibm to version 5.15.0-1032.35.
- Update canonical linux-intel-iotg to version 5.15.0-1033.38.
- Update canonical linux-kvm to version 5.15.0-1035.40.
- Update canonical linux-lowlatency to version 5.15.0-75.82.
- Update canonical linux-nvidia to version 5.15.0-1027.27.
- Update canonical linux-nvidia-tegra to version 5.15.0-1015.15.
- Update canonical linux-oracle to version 5.15.0-1037.43.
- Update canonical linux-raspi to version 5.15.0-1032.35.
- Update canonical linux-bluefield to version 5.15.0-1019.21.
- Update canonical linux-intel-iot-realtime to version 5.15.0-1033.35.
- Update canonical linux-realtime to version 5.15.0-1040.45.
- Update canonical linux-azure-fde-5.15 to version 5.15.0-1114.123~20.04.1.
- Update debian linux to version 6.1.20-1.
- Update canonical linux-azure-fde to version 5.15.0-1041.48.1.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:Pro:14.04:LTS | canonical | linux | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-lts-xenial | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-aws-hwe | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-gcp | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-lowlatency-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.8 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-raspi-realtime | All versions |
| Ubuntu:24.04:LTS | canonical | linux-realtime | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.14 | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-hwe | All versions |
| Ubuntu:16.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-kvm | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-oracle | All versions |
| Ubuntu:Pro:FIPS:16.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-aws-5.4 |
< 5.4.0-1104.112~18.04.1 Fix: upgrade to 5.4.0-1104.112~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-azure-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-azure-5.4 |
< 5.4.0-1110.116~18.04.1 Fix: upgrade to 5.4.0-1110.116~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-azure-edge | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-gcp-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-gcp-5.4 |
< 5.4.0-1107.116~18.04.1 Fix: upgrade to 5.4.0-1107.116~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-gke-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gkeop-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-hwe | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-hwe-5.4 |
< 5.4.0-152.169~18.04.1 Fix: upgrade to 5.4.0-152.169~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-ibm-5.4 |
< 5.4.0-1051.56~18.04.1 Fix: upgrade to 5.4.0-1051.56~18.04.1
|
| Ubuntu:Pro:18.04:LTS | canonical | linux-kvm | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oem | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-oracle | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.3 | All versions |
Showing 50 of 172. Show the rest
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:Pro:18.04:LTS | canonical | linux-oracle-5.4 |
< 5.4.0-1103.112~18.04.1 Fix: upgrade to 5.4.0-1103.112~18.04.1
|
| Ubuntu:Pro:18.04:LTS | canonical | linux-raspi-5.4 |
< 5.4.0-1088.99~18.04.1 Fix: upgrade to 5.4.0-1088.99~18.04.1
|
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-gcp-fips | All versions |
| Ubuntu:Pro:FIPS:18.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS:18.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS:18.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:FIPS:18.04:LTS | canonical | linux-gcp-fips | All versions |
| Ubuntu:20.04:LTS | canonical | linux |
< 5.4.0-152.169 Fix: upgrade to 5.4.0-152.169
|
| Ubuntu:20.04:LTS | canonical | linux-aws |
< 5.4.0-1104.112 Fix: upgrade to 5.4.0-1104.112
|
| Ubuntu:20.04:LTS | canonical | linux-aws-5.15 |
< 5.15.0-1038.43~20.04.1 Fix: upgrade to 5.15.0-1038.43~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-azure |
< 5.4.0-1110.116 Fix: upgrade to 5.4.0-1110.116
|
| Ubuntu:20.04:LTS | canonical | linux-azure-5.15 |
< 5.15.0-1040.47~20.04.1 Fix: upgrade to 5.15.0-1040.47~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-bluefield |
< 5.4.0-1065.71 Fix: upgrade to 5.4.0-1065.71
|
| Ubuntu:20.04:LTS | canonical | linux-gcp |
< 5.4.0-1107.116 Fix: upgrade to 5.4.0-1107.116
|
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.15 |
< 5.15.0-1036.44~20.04.1 Fix: upgrade to 5.15.0-1036.44~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.15 |
< 5.15.0-75.82~20.04.1 Fix: upgrade to 5.15.0-75.82~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-ibm |
< 5.4.0-1051.56 Fix: upgrade to 5.4.0-1051.56
|
| Ubuntu:20.04:LTS | canonical | linux-intel-iotg-5.15 |
< 5.15.0-1033.38~20.04.1 Fix: upgrade to 5.15.0-1033.38~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-iot |
< 5.4.0-1017.18 Fix: upgrade to 5.4.0-1017.18
|
| Ubuntu:20.04:LTS | canonical | linux-kvm |
< 5.4.0-1093.99 Fix: upgrade to 5.4.0-1093.99
|
| Ubuntu:20.04:LTS | canonical | linux-lowlatency-hwe-5.15 |
< 5.15.0-75.82~20.04.1 Fix: upgrade to 5.15.0-75.82~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-nvidia-tegra-5.15 |
< 5.15.0-1015.15~20.04.1 Fix: upgrade to 5.15.0-1015.15~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-oracle |
< 5.4.0-1103.112 Fix: upgrade to 5.4.0-1103.112
|
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.15 |
< 5.15.0-1037.43~20.04.1 Fix: upgrade to 5.15.0-1037.43~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-raspi |
< 5.4.0-1088.99 Fix: upgrade to 5.4.0-1088.99
|
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.15 |
< 5.15.0-1035.39~20.04.1 Fix: upgrade to 5.15.0-1035.39~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-xilinx-zynqmp |
< 5.4.0-1024.28 Fix: upgrade to 5.4.0-1024.28
|
| Ubuntu:20.04:LTS | canonical | linux-aws-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-fde | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-azure-fde-5.15 |
< 5.15.0-1114.123~20.04.1 Fix: upgrade to 5.15.0-1114.123~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-intel-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.10 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.14 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.6 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-raspi2 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.8 | All versions |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-aws-fips |
< 5.4.0-1104.112+fips1 Fix: upgrade to 5.4.0-1104.112+fips1
|
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-azure-fips |
< 5.4.0-1110.116+fips1 Fix: upgrade to 5.4.0-1110.116+fips1
|
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-fips |
< 5.4.0-1079.88 Fix: upgrade to 5.4.0-1079.88
|
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-gcp-fips |
< 5.4.0-1107.116+fips1 Fix: upgrade to 5.4.0-1107.116+fips1
|
| Ubuntu:Pro:FIPS:20.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS:20.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS:20.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:FIPS:20.04:LTS | canonical | linux-gcp-fips | All versions |
| Ubuntu:22.04:LTS | canonical | linux |
< 5.15.0-75.82 Fix: upgrade to 5.15.0-75.82
|
| Ubuntu:22.04:LTS | canonical | linux-allwinner-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws |
< 5.15.0-1038.43 Fix: upgrade to 5.15.0-1038.43
|
| Ubuntu:22.04:LTS | canonical | linux-aws-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure |
< 5.15.0-1040.47 Fix: upgrade to 5.15.0-1040.47
|
| Ubuntu:22.04:LTS | canonical | linux-azure-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde |
< 5.15.0-1041.48.1 Fix: upgrade to 5.15.0-1041.48.1
|
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp |
< 5.15.0-1036.44 Fix: upgrade to 5.15.0-1036.44
|
| Ubuntu:22.04:LTS | canonical | linux-gcp-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gke |
< 5.15.0-1036.41 Fix: upgrade to 5.15.0-1036.41
|
| Ubuntu:22.04:LTS | canonical | linux-gkeop |
< 5.15.0-1022.27 Fix: upgrade to 5.15.0-1022.27
|
| Ubuntu:22.04:LTS | canonical | linux-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-ibm |
< 5.15.0-1032.35 Fix: upgrade to 5.15.0-1032.35
|
| Ubuntu:22.04:LTS | canonical | linux-intel-iot-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-intel-iotg |
< 5.15.0-1033.38 Fix: upgrade to 5.15.0-1033.38
|
| Ubuntu:22.04:LTS | canonical | linux-kvm |
< 5.15.0-1035.40 Fix: upgrade to 5.15.0-1035.40
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency |
< 5.15.0-75.82 Fix: upgrade to 5.15.0-75.82
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia |
< 5.15.0-1027.27 Fix: upgrade to 5.15.0-1027.27
|
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-tegra |
< 5.15.0-1015.15 Fix: upgrade to 5.15.0-1015.15
|
| Ubuntu:22.04:LTS | canonical | linux-oem-5.17 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.0 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.1 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle |
< 5.15.0-1037.43 Fix: upgrade to 5.15.0-1037.43
|
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-raspi |
< 5.15.0-1032.35 Fix: upgrade to 5.15.0-1032.35
|
| Ubuntu:22.04:LTS | canonical | linux-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.5 | All versions |
| Ubuntu:Nvidia-BlueField:22.04:LTS | canonical | linux-bluefield |
< 5.15.0-1019.21 Fix: upgrade to 5.15.0-1019.21
|
| Ubuntu:Pro:FIPS-preview:22.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-intel-iot-realtime |
< 5.15.0-1033.35 Fix: upgrade to 5.15.0-1033.35
|
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-realtime |
< 5.15.0-1040.45 Fix: upgrade to 5.15.0-1040.45
|
| Ubuntu:24.04:LTS | canonical | linux-azure-6.11 | All versions |
| Debian:12 | debian | linux |
< 6.1.20-1 Fix: upgrade to 6.1.20-1
|
Original advisory text
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=1...
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: <TASK> 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_write_iter+0x17d/0x270 vfs_write+0x414/0x620 ksys_write+0x73/0x160 __x64_sys_write+0x1e/0x30 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd calc_lcoefs() uses the input value of cost.model in DIV_ROUND_UP_ULL, overflow would happen if bps plus IOC_PAGE_SIZE is greater than ULLONG_MAX, it can cause divide by 0 error. Fix the problem by setting basecost
References
- https://ubuntu.com/security/CVE-2023-53783 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2023-53783 Third Party Advisory
- https://git.kernel.org/linus/984af1e66b4126cf145153661cc24c213e2ec231 Third Party Advisory
- https://git.kernel.org/stable/c/6e291810fe83a384700eb24a1f714966391ed562 Third Party Advisory
- https://git.kernel.org/stable/c/984af1e66b4126cf145153661cc24c213e2ec231 Third Party Advisory
- https://git.kernel.org/stable/c/3538ade9d8c2ba41088e395de916f2599fadba8f Third Party Advisory
- https://git.kernel.org/stable/c/9e8bf9f95f7a299fa9ea45b678d001806ad5e12c Third Party Advisory
- https://git.kernel.org/stable/c/b96d7b4a9745fbd0c8384608ceb1f50415e862fa Third Party Advisory
- https://git.kernel.org/stable/c/bf8eb1fd6110871e6232e8e7efe399276ef7e6f6 Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2023-53783 Vendor Advisory
Timeline
Published9 Dec 2025
Updated29 Oct 2026
First seen7 Mar 2026
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