CVE-2025-38312: debian debian_linux Divide By Zero

CVSS: 5.5v3.1MediumModified

AliasesUBUNTU-CVE-2025-38312DEBIAN-CVE-2025-38312

Published 10-07-2025Last modified 15-10-2026

Vulnerability summary

CVE-2025-38312 is a medium (CVSS 5.5) Divide By Zero vulnerability in debian debian_linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.4% of scored vulnerabilities.

Overall risk

22/100

0100

Low · default modelHow is this calculated?

CVSS score

5.5/10

010

Medium · v3.1 (NVD)

EPSS score

0.18%

0%100%

Low · +0.02 pp in 30 days

KEVNot listedIn no KEV catalog

RansomwareNone recordedNo known use recorded

Public exploits0No public exploits recorded

Timeline

10-07-2025
PublishedVulnerability first disclosed.
15-10-2026
Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: core: fbcvt: avoid division by 0 in fb_cvt_hperiod() In fb_find_mode_cvt(), iff mode->refresh somehow happens to be 0x80000000, cvt.f_refresh will become 0 when multiplying it by 2 due to overflow. It's then passed to fb_cvt_hperiod(), where it's used as a divider -- division by 0 will result in kernel oops. Add a sanity check for cvt.f_refresh to avoid such overflow... Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool.

CVSS metrics

3 scores · 3 sources · 1 version

v3.15.5

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

Versus all other CVEs

30-day change

+0.02 pp

From 0.16% on 19-09-2026

19-09-202619-10-2026

EPSS score

0.18%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-369Divide By ZeroThe product divides a value by zero.

Affected systems

Ubuntu145 products

linuxAll versions (No fix recorded) | < 5.15.0-156.166 | < 6.8.0-100.100
linux-allwinner-5.19All versions (No fix recorded)
linux-awsAll versions (No fix recorded) | < 5.15.0-1092.99 | < 6.8.0-1046.49
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)

linux-aws-5.13All versions (No fix recorded)
linux-aws-5.15< 5.15.0-1092.99~20.04.1
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4All versions (No fix recorded)
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.14< 6.14.0-1013.13~24.04.1
linux-aws-6.2All versions (No fix recorded)
linux-aws-6.5All versions (No fix recorded)
linux-aws-6.8< 6.8.0-1046.49~22.04.1
linux-aws-fipsAll versions (No fix recorded) | < 5.15.0-1092.99+fips1 | < 6.8.0-1046.49+fips1
linux-aws-hweAll versions (No fix recorded)
linux-azureAll versions (No fix recorded) | < 5.15.0-1096.105 | < 6.8.0-1046.52
linux-azure-4.15All versions (No fix recorded)
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1096.105~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4All versions (No fix recorded)
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.11All versions (No fix recorded)
linux-azure-6.2All versions (No fix recorded)
linux-azure-6.5All versions (No fix recorded)
linux-azure-6.8< 6.8.0-1051.57~22.04.1
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1096.105.1 | < 6.8.0-1046.53
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.2All versions (No fix recorded)
linux-azure-fde-6.8< 6.8.0-1046.53~22.04.1
linux-azure-fipsAll versions (No fix recorded) | < 5.15.0-1096.105+fips1 | < 6.8.0-1046.52+fips1
linux-azure-nvidiaAll versions (No fix recorded)
linux-azure-nvidia-6.14< 6.14.0-1007.7
linux-bluefieldAll versions (No fix recorded) | < 5.15.0-1076.78 | < 6.8.0-1016.20
linux-fipsAll versions (No fix recorded) | < 5.15.0-156.166+fips1 | < 6.8.0-100.100+fips1
linux-gcpAll versions (No fix recorded) | < 5.15.0-1092.101 | < 6.8.0-1047.50
linux-gcp-4.15All versions (No fix recorded)
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1092.101~20.04.1
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4All versions (No fix recorded)
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.11All versions (No fix recorded)
linux-gcp-6.14< 6.14.0-1016.17~24.04.1
linux-gcp-6.2All versions (No fix recorded)
linux-gcp-6.5All versions (No fix recorded)
linux-gcp-6.8< 6.8.0-1047.50~22.04.2
linux-gcp-fipsAll versions (No fix recorded) | < 5.15.0-1092.101+fips1 | < 6.8.0-1047.50+fips1
linux-gkeAll versions (No fix recorded) | < 5.15.0-1089.95 | < 6.8.0-1043.48
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15All versions (No fix recorded)
linux-gke-5.4All versions (No fix recorded)
linux-gkeopAll versions (No fix recorded) | < 5.15.0-1075.83 | < 6.8.0-1030.33
linux-gkeop-5.15All versions (No fix recorded)
linux-gkeop-5.4All versions (No fix recorded)
linux-hweAll versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-156.166~20.04.1
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.4All versions (No fix recorded)
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.11All versions (No fix recorded)
linux-hwe-6.2All versions (No fix recorded)
linux-hwe-6.5All versions (No fix recorded)
linux-hwe-6.8< 6.8.0-100.100~22.04.1
linux-hwe-edgeAll versions (No fix recorded)
linux-ibmAll versions (No fix recorded) | < 5.15.0-1086.89 | < 6.8.0-1044.44
linux-ibm-5.15< 5.15.0-1086.89~20.04.1
linux-ibm-5.4All versions (No fix recorded)
linux-ibm-6.8< 6.8.0-1044.44~22.04.1
linux-intelAll versions (No fix recorded)
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded) | < 5.15.0-1085.87
linux-intel-iotg< 5.15.0-1087.93
linux-intel-iotg-5.15< 5.15.0-1087.93~20.04.1
linux-iotAll versions (No fix recorded)
linux-kvmAll versions (No fix recorded) | < 5.15.0-1088.93
linux-lowlatency< 5.15.0-156.166 | < 6.8.0-100.100.1
linux-lowlatency-hwe-5.15< 5.15.0-156.166~20.04.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.11All versions (No fix recorded)
linux-lowlatency-hwe-6.2All versions (No fix recorded)
linux-lowlatency-hwe-6.5All versions (No fix recorded)
linux-lowlatency-hwe-6.8< 6.8.0-100.100.1~22.04.1
linux-lts-xenialAll versions (No fix recorded)
linux-nvidia< 5.15.0-1087.88 | < 6.8.0-1046.49
linux-nvidia-6.11All versions (No fix recorded)
linux-nvidia-6.2All versions (No fix recorded)
linux-nvidia-6.5All versions (No fix recorded)
linux-nvidia-6.8< 6.8.0-1046.49~22.04.1
linux-nvidia-lowlatency< 6.8.0-1046.49.1
linux-nvidia-tegra< 5.15.0-1045.45 | < 6.8.0-1020.20
linux-nvidia-tegra-5.15< 5.15.0-1045.45~20.04.1
linux-nvidia-tegra-igx< 5.15.0-1034.34
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oem-6.1All versions (No fix recorded)
linux-oem-6.11All versions (No fix recorded)
linux-oem-6.14< 6.14.0-1012.12
linux-oem-6.5All versions (No fix recorded)
linux-oem-6.8All versions (No fix recorded)
linux-oracleAll versions (No fix recorded) | < 5.15.0-1090.96 | < 6.8.0-1043.44
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1090.96~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4All versions (No fix recorded)
linux-oracle-5.8All versions (No fix recorded)
linux-oracle-6.14< 6.14.0-1013.13~24.04.1
linux-oracle-6.5All versions (No fix recorded)
linux-oracle-6.8< 6.8.0-1043.44~22.04.1
linux-raspiAll versions (No fix recorded) | < 5.15.0-1086.89 | < 6.8.0-1047.51
linux-raspi-5.4All versions (No fix recorded)
linux-raspi-realtimeAll versions (No fix recorded) | < 6.8.0-2037.38
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1092.101 | < 6.8.1-1041.42
linux-realtime-6.14< 6.14.0-1012.12~24.04.1
linux-realtime-6.8< 6.8.1-1041.42~22.04.1
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1087.91~20.04.1
linux-riscv-5.19All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-riscv-6.14< 6.14.0-32.32.1~24.04.1
linux-riscv-6.5All versions (No fix recorded)
linux-riscv-6.8< 6.8.0-100.100~22.04.1
linux-starfive-5.19All versions (No fix recorded)
linux-starfive-6.2All versions (No fix recorded)
linux-starfive-6.5All versions (No fix recorded)
linux-xilinx< 6.8.0-1023.24
linux-xilinx-zynqmpAll versions (No fix recorded) | < 5.15.0-1056.60

Show all 145

Debian2 products

linux< 6.1.147-1 | < 6.12.35-1
debian_linuxEOL11.0

Linux2 products

linux≥ 96fe6a2109db29cd15b90a093c16e6cb4b19371a, < 9027ce4c037b566b658b8939a76326b7125e3627 | ≥ 96fe6a2109db29cd15b90a093c16e6cb4b19371a, < 610f247f2772e4f92b63442125a1b7ade79898d8 | ≥ 96fe6a2109db29cd15b90a093c16e6cb4b19371a, < 2d63433e8eaa3c91b2948190e395bc67009db0d9 | ≥ 96fe6a2109db29cd15b90a093c16e6cb4b19371a, < 54947530663edcbaaee1314c01fdd8c72861b124 | ≥ 96fe6a2109db29cd15b90a093c16e6cb4b19371a, < ab91647acdf43b984824776559a452212eaeb21a | ≥ 96fe6a2109db29cd15b90a093c16e6cb4b19371a, < b235393b9f43ff86a38ca2bde6372312ea215dc5 | ≥ 96fe6a2109db29cd15b90a093c16e6cb4b19371a, < 53784073cbad18f75583fd3da9ffdfc4d1f05405 | ≥ 96fe6a2109db29cd15b90a093c16e6cb4b19371a, < 3f6dae09fc8c306eb70fdfef70726e1f154e173a | 2.6.14
linux_kernel≥ 2.6.14, < 5.4.295 | ≥ 5.5, < 5.10.239 | ≥ 5.11, < 5.15.186 | ≥ 5.16, < 6.1.142 | ≥ 6.2, < 6.6.94 | ≥ 6.7, < 6.12.34 | ≥ 6.13, < 6.15.3

3 vendors · 149 products