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Vulnerability · Published Oct 21, 2024 · Assigned by Linux

CVE-2024-50058serial: protect uart_port_dtr_rts() in uart_shutdown() too

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 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 84.1% 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: serial: protect uart_port_dtr_rts() in uart_shutdown() too Commit af224ca2df29 (serial: core: Prevent unsafe uart port access, part 3) added few uport == NULL checks. It added one to uart_shutdown(), so the commit assumes, uport can be NULL in there. But right after that protection, there is an unprotected "uart_port_dtr_rts(uport, false);" call. That is invoked only if HUPCL is set, so I assume that is the reason why we do not see lots of these reports. Or it cannot be NULL at this point at all for some reason :P. Until the above is investigated, stay on the safe side and move this dereference to the if too. I got this inconsistency from Coverity under CID 1585130. Thanks.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.115-1DEBIAN-CVE-2024-50058
Debian:13linux6.11.4-1DEBIAN-CVE-2024-50058
Debian:14linux6.11.4-1DEBIAN-CVE-2024-50058
Ubuntu:22.04:LTSlinux5.15.0-133.144USN-7288-1
Ubuntu:22.04:LTSlinux5.15.0-133.144UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux6.8.0-56.58USN-7383-1
Ubuntu:24.04:LTSlinux6.8.0-56.58UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-aws5.15.0-1078.85UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-aws5.15.0-1078.85USN-7308-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1025.27UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-aws6.8.0-1025.27USN-7383-1
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1027.29~22.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-azure5.15.0-1081.90USN-7289-1
Ubuntu:22.04:LTSlinux-azure5.15.0-1081.90UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-azure6.8.0-1025.30UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1012.12~24.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1025.30~22.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1081.90.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1081.90.1USN-7289-1
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1014.15UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-gcp5.15.0-1077.86USN-7291-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1077.86UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-gcp6.8.0-1026.28UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-gcp6.8.0-1026.28USN-7383-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1011.11~24.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1026.28~22.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1026.28~22.04.1USN-7383-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1075.81UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-gke5.15.0-1075.81USN-7291-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1021.25USN-7383-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1021.25UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1060.68USN-7289-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1060.68UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1008.10USN-7383-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1008.10UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-57.59~22.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-ibm5.15.0-1070.73USN-7289-3
Ubuntu:22.04:LTSlinux-ibm5.15.0-1070.73UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-ibm6.8.0-1022.22UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1023.23~22.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1073.79UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1073.79USN-7289-4
Ubuntu:22.04:LTSlinux-kvm5.15.0-1076.81USN-7388-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1076.81UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-133.143UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-133.143USN-7288-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-56.58.1USN-7383-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-56.58.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-56.58.1~22.04.1USN-7383-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-56.58.1~22.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1072.73UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1072.73USN-7289-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1024.27USN-7383-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1024.27UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1007.7UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1024.27~22.04.1USN-7383-1
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1024.27~22.04.1UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1024.27.1USN-7383-1
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1024.27.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1033.33USN-7389-1
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1033.33UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1004.4UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1021.21UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1021.21USN-7389-1
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1015.15UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1024.24UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-oracle5.15.0-1075.81UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-oracle5.15.0-1075.81USN-7289-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1022.23USN-7383-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1022.23UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1022.23~22.04.1USN-7383-1
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1022.23~22.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-raspi5.15.0-1072.75UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-raspi5.15.0-1072.75USN-7305-1
Ubuntu:24.04:LTSlinux-raspi6.8.0-1028.32UBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-riscv6.8.0-56.58.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-56.58.1~22.04.1UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-50058
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1017.18UBUNTU-CVE-2024-50058
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1044.48USN-7390-1
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1044.48UBUNTU-CVE-2024-50058

Affected products (as reported)

VendorProductVersions
Linux Linux af224ca2df297440448b9d407d21b50982c6d532 – before 2fe399bb8efd0d325ab1138cf8e3ecf23a39e96daf224ca2df297440448b9d407d21b50982c6d532 – before 399927f0f875b93f3d5a0336d382ba48b8671eb2af224ca2df297440448b9d407d21b50982c6d532 – before d7b5876a6e74cdf8468a478be6b23f2f5464ac7aaf224ca2df297440448b9d407d21b50982c6d532 – before e418d91195d29d5f9c9685ff309b92b04b41dc40af224ca2df297440448b9d407d21b50982c6d532 – before 76ed24a34223bb2c6b6162e1d8389ec4e602a290af224ca2df297440448b9d407d21b50982c6d532 – before 602babaa84d627923713acaf5f7e9a4369e77473
Linux Linux 4.7

References