CVE-2024-50280 - CVE House
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Status published Unknown CVE-2024-50280

dm cache: fix flushing uninitialized delayed_work on cache_ctr error

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: dm cache: fix flushing uninitialized delayed_work on cache_ctr error An unexpected WARN_ON from flush_work() may occur when cache creation fails, caused by destroying the uninitialized delayed_work waker in the error path of cache_create(). For example, the warning appears on the superblock checksum error. Reproduce steps: dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" Kernel logs: (snip) WARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Fix by pulling out the cancel_delayed_work_sync() from the constructor's error path. This patch doesn't affect the use-after-free fix for concurrent dm_resume and dm_destroy (commit 6a459d8edbdb ("dm cache: Fix UAF in destroy()")) as cache_dtr is not changed.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
2b17026685a270b2beaf1cdd9857fcedd3505c7e, d2a0b298ebf83ab6236f66788a3541e91ce75a70, 6a3e412c2ab131c54945327a7676b006f000a209, 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa, 034cbc8d3b47a56acd89453c29632a9c117de09d, 993406104d2b28fe470126a062ad37a1e21e792e, 4d20032dd90664de09f2902a7ea49ae2f7771746, 2f097dfac7579fd84ff98eb1d3acd41d53a485f3, 6ac4f36910764cb510bafc4c3768544f86ca48ca, 5.10.163, 5.15.87, 6.1.4, 4.9.337, 4.14.303, 4.19.270, 5.4.229, 6.0.18, 6.2, 0, 5.10.237, 5.15.181, 6.1.117, 6.6.61, 6.11.8, 6.12

Timeline

Official Publish: November 19th, 2024
Last Modified: May 23rd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.