CVE-2024-38583

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxfdce895ea5dd4e24edf1f4d693827349a4e5b3b4 < 822ae5a8eac30478578a75f7e064f0584931bf2daffected
LinuxLinuxfdce895ea5dd4e24edf1f4d693827349a4e5b3b4 < 82933c84f188dcfe89eb26b0b48ab5d1ca99d164affected
LinuxLinuxfdce895ea5dd4e24edf1f4d693827349a4e5b3b4 < 67fa90d4a2ccd9ebb0e1e168c7d0b5d0cf3c7148affected
LinuxLinuxfdce895ea5dd4e24edf1f4d693827349a4e5b3b4 < e65ccf3a4de4f0c763d94789615b83e11f204438affected
LinuxLinuxfdce895ea5dd4e24edf1f4d693827349a4e5b3b4 < 86a30d6302deddb9fb97ba6fc4b04d0e870b582aaffected
LinuxLinuxfdce895ea5dd4e24edf1f4d693827349a4e5b3b4 < f9186bba4ea282b07293c1c892441df3a5441cb0affected
LinuxLinuxfdce895ea5dd4e24edf1f4d693827349a4e5b3b4 < 2f12b2c03c5dae1a0de0a9e5853177e3d6eee3c6affected
LinuxLinuxfdce895ea5dd4e24edf1f4d693827349a4e5b3b4 < 68e738be5c518fc3c4e9146b66f67c8fee0135fbaffected
LinuxLinuxfdce895ea5dd4e24edf1f4d693827349a4e5b3b4 < f5d4e04634c9cf68bdf23de08ada0bb92e8befe7affected
LinuxLinux2.6.35affected
LinuxLinux0 < 2.6.35unaffected
LinuxLinux4.19.316 <= 4.19.*unaffected
LinuxLinux5.4.278 <= 5.4.*unaffected
LinuxLinux5.10.219 <= 5.10.*unaffected
LinuxLinux5.15.161 <= 5.15.*unaffected
LinuxLinux6.1.94 <= 6.1.*unaffected
LinuxLinux6.6.33 <= 6.6.*unaffected
LinuxLinux6.8.12 <= 6.8.*unaffected
LinuxLinux6.9.3 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References