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Vulnerability · Published Apr 3, 2024 · Assigned by Linux

CVE-2024-26778fbdev: savage: Error out if pixclock equals zero

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 83.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: fbdev: savage: Error out if pixclock equals zero The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error. Although pixclock is checked in savagefb_decode_var(), but it is not checked properly in savagefb_probe(). Fix this by checking whether pixclock is zero in the function savagefb_check_var() before info->var.pixclock is used as the divisor. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.82-1DEBIAN-CVE-2024-26778
Debian:13linux6.7.7-1DEBIAN-CVE-2024-26778
Debian:14linux6.7.7-1DEBIAN-CVE-2024-26778
Ubuntu:22.04:LTSlinux5.15.0-112.122UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux5.15.0-112.122USN-6820-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-aws5.15.0-1063.69UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-aws5.15.0-1063.69USN-6821-3
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-azure5.15.0-1066.75UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-azure5.15.0-1066.75USN-6821-4
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1065.74.1USN-6821-4
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1067.76.1UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-gcp5.15.0-1062.70UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-gcp5.15.0-1062.70USN-6820-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-gke5.15.0-1060.66UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-gke5.15.0-1060.66USN-6821-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1046.53USN-6821-2
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1046.53UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-ibm5.15.0-1056.59USN-6821-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1056.59UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1058.64UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1058.64USN-6821-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1060.65UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-kvm5.15.0-1060.65USN-6821-2
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-110.120USN-6820-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-110.120UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1058.59UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1058.59USN-6820-2
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1026.26UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1015.15UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-oracle5.15.0-1061.67UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-oracle5.15.0-1061.67USN-6821-1
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-raspi5.15.0-1058.61UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2024-26778
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34USN-6820-1

Affected products (as reported)

VendorProductVersions
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 224453de8505aede1890f007be973925a3edf6a11da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 512ee6d6041e007ef5bf200c6e388e172a2c5b241da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 8c54acf33e5adaad6374bf3ec1e3aff0591cc8e11da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 070398d32c5f3ab0e890374904ad94551c76aec41da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before bc3c2e58d73b28b9a8789fca84778ee165a72d131da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before a9ca4e80d23474f90841251f4ac0d941fa337a011da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288
Linux Linux 2.6.12

References