CVE-2024-38582 Affecting cluster-md-kmp-default package, versions <6.4.0-150600.23.14.2
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Test your applications- Snyk ID SNYK-SLES156-CLUSTERMDKMPDEFAULT-7553684
- published 23 Jul 2024
- disclosed 22 Jul 2024
Introduced: 22 Jul 2024
CVE-2024-38582 Open this link in a new tabHow to fix?
Upgrade SLES:15.6 cluster-md-kmp-default to version 6.4.0-150600.23.14.2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream cluster-md-kmp-default package and not the cluster-md-kmp-default package as distributed by SLES.
See How to fix? for SLES:15.6 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix potential hang in nilfs_detach_log_writer()
Syzbot has reported a potential hang in nilfs_detach_log_writer() called during nilfs2 unmount.
Analysis revealed that this is because nilfs_segctor_sync(), which synchronizes with the log writer thread, can be called after nilfs_segctor_destroy() terminates that thread, as shown in the call trace below:
nilfs_detach_log_writer nilfs_segctor_destroy nilfs_segctor_kill_thread --> Shut down log writer thread flush_work nilfs_iput_work_func nilfs_dispose_list iput nilfs_evict_inode nilfs_transaction_commit nilfs_construct_segment (if inode needs sync) nilfs_segctor_sync --> Attempt to synchronize with log writer thread *** DEADLOCK ***
Fix this issue by changing nilfs_segctor_sync() so that the log writer thread returns normally without synchronizing after it terminates, and by forcing tasks that are already waiting to complete once after the thread terminates.
The skipped inode metadata flushout will then be processed together in the subsequent cleanup work in nilfs_segctor_destroy().
References
- https://www.suse.com/security/cve/CVE-2024-38582.html
- https://bugzilla.suse.com/1226658
- https://git.kernel.org/stable/c/06afce714d87c7cd1dcfccbcd800c5c5d2cf1cfd
- https://git.kernel.org/stable/c/1c3844c5f4eac043954ebf6403fa9fd1f0e9c1c0
- https://git.kernel.org/stable/c/6e5c8e8e024e147b834f56f2115aad241433679b
- https://git.kernel.org/stable/c/911d38be151921a5d152bb55e81fd752384c6830
- https://git.kernel.org/stable/c/a8799662fed1f8747edae87a1937549288baca6a
- https://git.kernel.org/stable/c/bc9cee50a4a4ca23bdc49f75ea8242d8a2193b3b
- https://git.kernel.org/stable/c/c516db6ab9eabbedbc430b4f93b0d8728e9b427f
- https://git.kernel.org/stable/c/eb85dace897c5986bc2f36b3c783c6abb8a4292e
- https://git.kernel.org/stable/c/eff7cdf890b02596b8d73e910bdbdd489175dbdb
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html