Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2b17026685a270b2beaf1cdd9857fcedd3505c7e before 40fac0271c7aedf60d81ed8214e80851e5b26312; affected d2a0b298ebf83ab6236f66788a3541e91ce75a70 before d154b333a5667b6c1b213a11a41ad7aaccd10c3d; affected 6a3e412c2ab131c54945327a7676b006f000a209 before 5a754d3c771280f2d06bf8ab716d6a0d36ca256e; affected 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa before 8cc12dab635333c4ea28e72d7b947be7d0543c2c; affected 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa before aee3ecda73ce13af7c3e556383342b57e6bd0718; affected 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa before 135496c208ba26fd68cdef10b64ed7a91ac9a7ff; affected 034cbc8d3b47a56acd89453c29632a9c117de09d; affected 993406104d2b28fe470126a062ad37a1e21e792e; affected 4d20032dd90664de09f2902a7ea49ae2f7771746; affected 2f097dfac7579fd84ff98eb1d3acd41d53a485f3; affected 6ac4f36910764cb510bafc4c3768544f86ca48ca; affected 5.10.163 before 5.10.237; affected 5.15.87 before 5.15.181; affected 6.1.4 before 6.1.117; affected 4.9.337 before 4.10; affected 4.14.303 before 4.15; affected 4.19.270 before 4.20; affected 5.4.229 before 5.5; affected 6.0.18 before 6.1 |
| Linux / Linux | affected 6.2; unaffected 0 before 6.2; unaffected 5.10.237 through 5.10.*; unaffected 5.15.181 through 5.15.*; unaffected 6.1.117 through 6.1.*; unaffected 6.6.61 through 6.6.*; unaffected 6.11.8 through 6.11.*; unaffected 6.12 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/40fac0271c7aedf60d81ed8214e80851e5b26312
- https://git.kernel.org/stable/c/d154b333a5667b6c1b213a11a41ad7aaccd10c3d
- https://git.kernel.org/stable/c/5a754d3c771280f2d06bf8ab716d6a0d36ca256e
- https://git.kernel.org/stable/c/8cc12dab635333c4ea28e72d7b947be7d0543c2c
- https://git.kernel.org/stable/c/aee3ecda73ce13af7c3e556383342b57e6bd0718
- https://git.kernel.org/stable/c/135496c208ba26fd68cdef10b64ed7a91ac9a7ff
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.