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Vulnerability · Published May 21, 2024 · Assigned by Linux

CVE-2023-52847media: bttv: fix use after free error due to btv->timeout timer

High 7.8

In plain English

A high-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 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 91.6% 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: media: bttv: fix use after free error due to btv->timeout timer There may be some a race condition between timer function bttv_irq_timeout and bttv_remove. The timer is setup in probe and there is no timer_delete operation in remove function. When it hit kfree btv, the function might still be invoked, which will cause use after free bug. This bug is found by static analysis, it may be false positive. Fix it by adding del_timer_sync invoking to the remove function. cpu0 cpu1 bttv_probe ->timer_setup ->bttv_set_dma ->mod_timer; bttv_remove ->kfree(btv); ->bttv_irq_timeout ->USE btv

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-abi-stablelists4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-core4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-cross-headers4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-debug4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-debug-core4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-debug-devel4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-debug-modules4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-devel4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-doc4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-headers4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-modules4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-modules-extra4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-rt4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-core4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-debug4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-debug-core4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-debug-kvm4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-devel4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-kvm4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-modules4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.16.1.rt7.357.el8_10ALSA-2024:5102
AlmaLinux:8kernel-tools4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-tools-libs4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-zfcpdump4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8perf4.18.0-553.16.1.el8_10ALSA-2024:5101
AlmaLinux:8python3-perf4.18.0-553.16.1.el8_10ALSA-2024:5101
Debian:12linux6.1.64-1DEBIAN-CVE-2023-52847
Debian:13linux6.6.8-1DEBIAN-CVE-2023-52847
Debian:14linux6.6.8-1DEBIAN-CVE-2023-52847
Rocky Linux:8kernel0:4.18.0-553.16.1.el8_10.cloud.0.1RXSA-2024:5101
Rocky Linux:8kernel0:4.18.0-553.16.1.el8_10RLSA-2024:5101
Rocky Linux:8kernel-rt0:4.18.0-553.16.1.rt7.357.el8_10RLSA-2024:5102
Ubuntu:22.04:LTSlinux5.15.0-100.110UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-aws5.15.0-1056.61UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-azure5.15.0-1058.66UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1058.66.1UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-gcp5.15.0-1053.61UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-gke5.15.0-1052.57UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1038.44UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-ibm5.15.0-1048.51UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1050.56UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-kvm5.15.0-1052.57UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-100.110UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1046.46UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1014.14UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1025.25UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1012.12UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-oracle5.15.0-1053.59UBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-raspi5.15.0-1048.51UBUNTU-CVE-2023-52847
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-52847
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2023-52847

Affected products (as reported)

VendorProductVersions
Linux Linux 162e6376ac58440beb6a2d2ee294f5d88ea58dd1 – before bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9162e6376ac58440beb6a2d2ee294f5d88ea58dd1 – before b35fdade92c5058a5e727e233fe263b828de2c9a162e6376ac58440beb6a2d2ee294f5d88ea58dd1 – before 2f3d9198cdae1cb079ec8652f4defacd481eab2b162e6376ac58440beb6a2d2ee294f5d88ea58dd1 – before 51c94256a83fe4e17406c66ff3e1ad7d242d8574162e6376ac58440beb6a2d2ee294f5d88ea58dd1 – before 20568d06f6069cb835e05eed432edf962645d226162e6376ac58440beb6a2d2ee294f5d88ea58dd1 – before 1871014d6ef4812ad11ef7d838d73ce09d632267162e6376ac58440beb6a2d2ee294f5d88ea58dd1 – before 847599fffa528b2cdec4e21b6bf7586dad982132162e6376ac58440beb6a2d2ee294f5d88ea58dd1 – before bd5b50b329e850d467e7bcc07b2b6bde3752fbda
Linux Linux 4.15

References