7.8
CWE
416
Advisory Published
CVE Published
Updated

CVE-2024-38583: nilfs2: fix use-after-free of timer for log writer thread

First published: Wed Jun 19 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix use-after-free of timer for log writer thread Patch series "nilfs2: fix log writer related issues". This bug fix series covers three nilfs2 log writer-related issues, including a timer use-after-free issue and potential deadlock issue on unmount, and a potential freeze issue in event synchronization found during their analysis. Details are described in each commit log. This patch (of 3): A use-after-free issue has been reported regarding the timer sc_timer on the nilfs_sc_info structure. The problem is that even though it is used to wake up a sleeping log writer thread, sc_timer is not shut down until the nilfs_sc_info structure is about to be freed, and is used regardless of the thread's lifetime. Fix this issue by limiting the use of sc_timer only while the log writer thread is alive.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=2.6.35<4.19.316
Linux Linux kernel>=4.20<5.4.278
Linux Linux kernel>=5.5<5.10.219
Linux Linux kernel>=5.11<5.15.161
Linux Linux kernel>=5.16<6.1.94
Linux Linux kernel>=6.2<6.6.33
Linux Linux kernel>=6.7<6.8.12
Linux Linux kernel>=6.9<6.9.3
debian/linux
5.10.223-1
5.10.226-1
6.1.115-1
6.1.119-1
6.11.10-1

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