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 Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade python-perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernelUpgrade bpftoolUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernel-livepatch-5.10.239-236.958Upgrade perf-debuginfoUpgrade kernel-livepatch-5.15.186-128.192Upgrade kernel-tools-develUpgrade perfUpgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64 | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-modules-extraUpgrade perfUpgrade python3-perf6.12-debuginfoUpgrade kernel-tools-develUpgrade python3-perfUpgrade python3-perf-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel-livepatch-6.12.35-55.103Upgrade kernel-libbpf-staticUpgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade python3-perf6.12Upgrade kernel-libbpf-debuginfoUpgrade kernel-develUpgrade kernel-libbpf-develUpgrade perf-debuginfoUpgrade kernel6.12Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-debuginfoUpgrade kernel-modules-extra-commonUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-6.1.144-170.251Upgrade kernel-headersUpgrade bpftool-debuginfoUpgrade kernel6.12-modules-extraUpgrade perf6.12Upgrade kernel-libbpfUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel | Aug 5, 2025 | Jul 10, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Jul 11, 2025 | Jul 11, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade python3-perf | Sep 15, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernel-tools | Dec 12, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernelUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-toolsUpgrade bpftool | Nov 12, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernelUpgrade bpftoolUpgrade python3-perfUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernel-abi-stablelists | Nov 21, 2025 | Sep 9, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Sep 10, 2025 | Jul 10, 2025 |
| Redhat_linux | — | No solution exists | Jul 14, 2025 | Jul 10, 2025 |
| Suse | — | Upgrade reiserfs-kmp-azureUpgrade kernel-rtUpgrade kernel-syms-azureUpgrade kernel-rt-livepatchUpgrade kernel-symsUpgrade dtb-xilinxUpgrade dtb-qcomUpgrade kernel-rt-develUpgrade kernel-default-vdsoUpgrade kernel-64kb-extraUpgrade kernel-64kb-develUpgrade kselftests-kmp-rtUpgrade dlm-kmp-rtUpgrade dtb-rockchipUpgrade kernel-obs-qaUpgrade kernel-default-extraUpgrade kernel-default-optionalUpgrade dtb-sprdUpgrade kselftests-kmp-defaultUpgrade dtb-armUpgrade dtb-mediatekUpgrade dtb-apmUpgrade cluster-md-kmp-defaultUpgrade cluster-md-kmp-64kbUpgrade ocfs2-kmp-defaultUpgrade kernel-docsUpgrade dtb-exynosUpgrade dtb-allwinnerUpgrade kernel-azure-develUpgrade kernel-develUpgrade kernel-devel-azureUpgrade ocfs2-kmp-rtUpgrade dtb-nvidiaUpgrade kernel-defaultUpgrade kernel-default-base-rebuildUpgrade cluster-md-kmp-rtUpgrade kernel-devel-rtUpgrade dlm-kmp-azureUpgrade ocfs2-kmp-azureUpgrade kernel-macrosUpgrade kernel-rt-extraUpgrade dtb-hisiliconUpgrade kernel-obs-buildUpgrade dtb-socionextUpgrade kernel-64kbUpgrade dtb-caviumUpgrade kernel-rt_debug-vdsoUpgrade kernel-default-manUpgrade ocfs2-kmp-64kbUpgrade kernel-sourceUpgrade kernel-rt-optionalUpgrade kernel-azure-vdsoUpgrade dtb-alteraUpgrade kernel-kvmsmall-develUpgrade kernel-default-baseUpgrade kernel-64kb-optionalUpgrade kselftests-kmp-azureUpgrade kselftests-kmp-64kbUpgrade kernel-source-azureUpgrade reiserfs-kmp-64kbUpgrade kernel-default-livepatchUpgrade kernel-source-vanillaUpgrade kernel-azure-optionalUpgrade reiserfs-kmp-defaultUpgrade kernel-rt_debugUpgrade dtb-renesasUpgrade dtb-marvellUpgrade kernel-syms-rtUpgrade kernel-kvmsmall-vdsoUpgrade kernel-kvmsmallUpgrade gfs2-kmp-azureUpgrade dlm-kmp-defaultUpgrade kernel-rt-vdsoUpgrade kernel-azureUpgrade kernel-default-livepatch-develUpgrade gfs2-kmp-defaultUpgrade gfs2-kmp-64kbUpgrade dtb-lgUpgrade dtb-freescaleUpgrade dtb-amdUpgrade kernel-rt_debug-develUpgrade kernel-zfcpdumpUpgrade kernel-source-rtUpgrade kernel-rt-livepatch-develUpgrade dtb-amazonUpgrade cluster-md-kmp-azureUpgrade dtb-appleUpgrade dtb-amlogicUpgrade kernel-azure-extraUpgrade dlm-kmp-64kbUpgrade dtb-broadcomUpgrade reiserfs-kmp-rtUpgrade kernel-debugUpgrade kernel-docs-htmlUpgrade kernel-default-develUpgrade kernel-debug-vdsoUpgrade kernel-debug-develUpgrade gfs2-kmp-rt | Dec 5, 2025 | Aug 18, 2025 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-6.8.0-1046-awsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1092-aws-64kUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-5.15.0-1089-gkeUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-aws-fips-5.15Upgrade linux-image-lowlatency-5.15Upgrade linux-image-aws-6.8Upgrade linux-image-5.15.0-156-generic-64kUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-generic-64k-5.15Upgrade linux-image-gcp-5.15Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-azure-6.14Upgrade linux-image-realtimeUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-raspiUpgrade linux-image-ibm-5.15Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-oracle-6.14Upgrade linux-image-raspi-5.15Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-aws-fipsUpgrade linux-image-xilinx-6.8Upgrade linux-image-generic-6.14Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-azure-lts-22.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-oracle-5.15Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-gcp-6.14Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-raspi-6.14Upgrade linux-image-6.14.0-1012-azureUpgrade linux-image-nvidiaUpgrade linux-image-raspi-nolpaeUpgrade linux-image-azure-5.15Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-5.15.0-1045-nvidia-tegra-rtUpgrade linux-image-virtual-5.15Upgrade linux-image-5.15.0-1045-nvidia-tegraUpgrade linux-image-oem-22.04dUpgrade linux-image-nvidia-tegraUpgrade linux-image-realtime-6.14Upgrade linux-image-raspi-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-5.15.0-1096-azureUpgrade linux-image-genericUpgrade linux-image-lowlatency-6.8Upgrade linux-image-azure-fips-5.15Upgrade linux-image-lowlatency-64kUpgrade linux-image-5.15.0-1087-nvidiaUpgrade linux-image-6.14.0-1013-oracle-64kUpgrade linux-image-azureUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-fipsUpgrade linux-image-5.15.0-1034-nvidia-tegra-igx-rtUpgrade linux-image-5.15.0-1090-oracleUpgrade linux-image-5.15.0-1087-intel-iotgUpgrade linux-image-generic-64kUpgrade linux-image-aws-64k-5.15Upgrade linux-image-generic-5.15Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-oem-22.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-virtual-6.8Upgrade linux-image-aws-6.14Upgrade linux-image-gcp-64kUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1046-azureUpgrade linux-image-gke-64k-6.8Upgrade linux-image-gke-64kUpgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-6.14.0-1016-gcpUpgrade linux-image-gkeop-5.15Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-aws-5.15Upgrade linux-image-oracle-6.8Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-generic-lpaeUpgrade linux-image-6.14.0-1013-awsUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-5.15.0-1092-gcp-fipsUpgrade linux-image-gkeopUpgrade linux-image-kvm-5.15Upgrade linux-image-6.14.0-1013-aws-64kUpgrade linux-image-6.14.0-1014-raspiUpgrade linux-image-gcp-fipsUpgrade linux-image-oem-24.04aUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-5.15.0-1092-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-gcp-6.8Upgrade linux-image-oracle-64k-6.14Upgrade linux-image-ibmUpgrade linux-image-aws-64k-6.14Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-gke-5.15Upgrade linux-image-6.14.0-1013-oracleUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-5.15.0-156-generic-lpaeUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-5.15.0-156-genericUpgrade linux-image-5.15.0-1087-nvidia-lowlatencyUpgrade linux-image-gkeop-6.8Upgrade linux-image-fips-5.15Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-oem-22.04bUpgrade linux-image-azure-lts-24.04Upgrade linux-image-azure-cvmUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-awsUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-lowlatencyUpgrade linux-image-generic-64k-6.14Upgrade linux-image-6.14.0-1012-realtimeUpgrade linux-image-5.15.0-1096-azure-fipsUpgrade linux-image-oem-24.04bUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-oem-22.04cUpgrade linux-image-oem-22.04aUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-aws-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-5.15.0-156-lowlatency-64kUpgrade linux-image-ibm-classicUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-5.15.0-156-lowlatencyUpgrade linux-image-5.15.0-1092-awsUpgrade linux-image-intel-iotgUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-nvidia-5.15Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-realtime-5.15Upgrade linux-image-oem-24.04Upgrade linux-image-5.15.0-1085-intel-iot-realtimeUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-ibm-6.8Upgrade linux-image-5.15.0-1086-raspiUpgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-100-genericUpgrade linux-image-intelUpgrade linux-image-aws-lts-22.04Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-generic-6.8Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-6.14.0-32-generic-64kUpgrade linux-image-6.14.0-1016-gcp-64kUpgrade linux-image-oracleUpgrade linux-image-5.15.0-1088-kvmUpgrade linux-image-aws-64k-6.8Upgrade linux-image-5.15.0-1086-ibmUpgrade linux-image-5.15.0-156-fipsUpgrade linux-image-xilinxUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-5.15.0-1034-nvidia-tegra-igxUpgrade linux-image-5.15.0-1056-xilinx-zynqmpUpgrade linux-image-5.15.0-1075-gkeopUpgrade linux-image-5.15.0-1092-gcpUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-oem-24.04cUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-6.14.0-32-genericUpgrade linux-image-5.15.0-1092-aws-fipsUpgrade linux-image-fips-6.8Upgrade linux-image-gcpUpgrade linux-image-virtual-6.14Upgrade linux-image-kvmUpgrade linux-image-generic-64k-6.8Upgrade linux-image-6.14.0-1012-oemUpgrade linux-image-gke-6.8Upgrade linux-image-aws-fips-6.8Upgrade linux-image-virtualUpgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-azure-fips-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-oem-6.14Upgrade linux-image-virtual-hwe-24.04 | Jul 14, 2025 | Jul 10, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 3, 2025 | Jul 10, 2025 |
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