In the Linux kernel, the following vulnerability has been resolved:
watchdog: Fix possible use-after-free by calling del_timer_sync()
This driver's remove path calls del_timer(). However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running after the driver's remove function has finished, which would result in a use-after-free.
Fix by calling del_timer_sync(), which makes sure the timer handler has finished, and unable to re-schedule itself.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-debug-coreUpgrade kernel-debug-develUpgrade kernel-debugUpgrade kernelUpgrade kernel-rt-modules-extraUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-develUpgrade kernel-develUpgrade kernel-debug-coreUpgrade kernel-rt-develUpgrade kernel-zfcpdump-modules-extraUpgrade perfUpgrade kernel-rt-debug-kvmUpgrade kernel-headersUpgrade kernel-rt-coreUpgrade kernel-rt-debugUpgrade kernel-zfcpdump-develUpgrade kernel-cross-headersUpgrade python3-perfUpgrade kernel-rt-debug-modules-extraUpgrade bpftoolUpgrade kernel-debug-modulesUpgrade kernel-rtUpgrade kernel-zfcpdumpUpgrade kernel-debug-modules-extraUpgrade kernel-abi-stablelistsUpgrade kernel-rt-debug-modulesUpgrade kernel-coreUpgrade kernel-zfcpdump-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-tools-libsUpgrade kernel-rt-modulesUpgrade kernel-modulesUpgrade kernel-docUpgrade kernel-toolsUpgrade kernel-rt-kvmUpgrade kernel-modules-extra | Sep 26, 2024 | May 21, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | May 21, 2024 |
| Oracle_linux | — | Upgrade kernel | Oct 16, 2024 | May 21, 2024 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Sep 25, 2024 | May 21, 2024 |
| Rocky_linux | — | Upgrade kernel-tools-libs-develUpgrade kernel-rt-debug-debuginfoUpgrade kernel-debug-debuginfoUpgrade kernel-debug-develUpgrade kernel-rt-debug-modulesUpgrade kernel-headersUpgrade kernel-rt-debug-kvmUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-modulesUpgrade kernel-rt-debug-coreUpgrade kernelUpgrade kernel-debuginfoUpgrade kernel-debugUpgrade kernel-coreUpgrade bpftool-debuginfoUpgrade kernel-tools-libsUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-cross-headersUpgrade kernel-debug-modules-extraUpgrade kernel-rt-modules-extraUpgrade kernel-modulesUpgrade kernel-rt-debug-develUpgrade python3-perfUpgrade kernel-rt-coreUpgrade bpftoolUpgrade kernel-rt-develUpgrade python3-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-rt-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-rt-modulesUpgrade perfUpgrade kernel-modules-extraUpgrade kernel-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rtUpgrade kernel-debug-coreUpgrade kernel-rt-kvmUpgrade kernel-rt-debug | Oct 2, 2024 | May 21, 2024 |
| Suse | — | Upgrade kernel-zfcpdumpUpgrade kernel-64kb-develUpgrade kernel-trace-develUpgrade reiserfs-kmp-defaultUpgrade kernel-defaultUpgrade kernel-develUpgrade kernel-default-develUpgrade kernel-xenUpgrade kernel-64kbUpgrade kernel-xen-develUpgrade kernel-symsUpgrade kernel-ec2-baseUpgrade kernel-xen-baseUpgrade kernel-trace-baseUpgrade kernel-default-baseUpgrade kernel-preempt-develUpgrade kernel-preemptUpgrade kernel-devel-azureUpgrade kernel-syms-azureUpgrade kernel-macrosUpgrade kernel-sourceUpgrade kernel-default-extraUpgrade kernel-obs-buildUpgrade kernel-azure-develUpgrade kernel-azure-baseUpgrade kernel-traceUpgrade kernel-ec2-develUpgrade kernel-ec2Upgrade kernel-azureUpgrade kernel-source-azureUpgrade kernel-default-manUpgrade kernel-docs | Aug 9, 2024 | May 21, 2024 |
| Ubuntu | — | Upgrade linux-hweUpgrade linux-aws-fipsUpgrade linux-azure-fde-5.15Upgrade linux-azure-fipsUpgrade linux-azure-4.15Upgrade linux-gcp-5.4Upgrade linuxUpgrade linux-ibmUpgrade linux-hwe-5.4Upgrade linux-gcp-4.15Upgrade linux-oracleUpgrade linux-gkeopUpgrade linux-gcpUpgrade linux-gcp-fipsUpgrade linux-aws-hweUpgrade linux-kvmUpgrade linux-raspiUpgrade linux-awsUpgrade linux-aws-5.4Upgrade linux-azureUpgrade linux-fipsUpgrade linux-bluefieldUpgrade linux-raspi-5.4Upgrade linux-oracle-5.4Upgrade linux-azure-5.4 | Nov 19, 2024 | May 21, 2024 |
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