In the Linux kernel, the following vulnerability has been resolved:
watchdog: Fix possible use-after-free in wdt_startup()
This module'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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 21, 2024 |
| Suse | — | Upgrade kernel-azure-baseUpgrade kernel-ec2Upgrade kernel-preempt-develUpgrade kernel-source-azureUpgrade kernel-xenUpgrade kernel-azure-develUpgrade kernel-default-baseUpgrade kernel-azureUpgrade kernel-trace-develUpgrade kernel-obs-buildUpgrade kernel-default-manUpgrade kernel-defaultUpgrade kernel-preemptUpgrade kernel-sourceUpgrade kernel-xen-develUpgrade kernel-64kbUpgrade kernel-docsUpgrade kernel-trace-baseUpgrade kernel-ec2-baseUpgrade kernel-xen-baseUpgrade reiserfs-kmp-defaultUpgrade kernel-zfcpdumpUpgrade kernel-syms-azureUpgrade kernel-develUpgrade kernel-traceUpgrade kernel-macrosUpgrade kernel-64kb-develUpgrade kernel-devel-azureUpgrade kernel-ec2-develUpgrade kernel-default-develUpgrade kernel-default-extraUpgrade kernel-syms | Aug 9, 2024 | May 21, 2024 |
| Ubuntu | — | Upgrade linux-kvmUpgrade linux-azure-fde-5.15Upgrade linux-azure-4.15Upgrade linux-fipsUpgrade linux-aws-hweUpgrade linux-gcpUpgrade linux-gcp-4.15Upgrade linux-azure-fipsUpgrade linux-gcp-5.4Upgrade linux-gcp-fipsUpgrade linux-aws-fipsUpgrade linuxUpgrade linux-oracleUpgrade linux-hwe-5.4Upgrade linux-azure-5.4Upgrade linux-ibmUpgrade linux-hweUpgrade linux-gkeopUpgrade linux-raspiUpgrade linux-azureUpgrade linux-awsUpgrade linux-bluefieldUpgrade linux-raspi-5.4Upgrade linux-aws-5.4Upgrade linux-oracle-5.4 | Nov 19, 2024 | May 21, 2024 |
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