cbcvebase.
CVE-2025-38172
published 2025-07-03

CVE-2025-38172: In the Linux kernel, the following vulnerability has been resolved: erofs: avoid using multiple devices with different type For multiple devices, both primary…

PriorityP340high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.15%
4.5th percentile
In the Linux kernel, the following vulnerability has been resolved: erofs: avoid using multiple devices with different type For multiple devices, both primary and extra devices should be the same type. `erofs_init_device` has already guaranteed that if the primary is a file-backed device, extra devices should also be regular files. However, if the primary is a block device while the extra device is a file-backed device, `erofs_init_device` will get an ENOTBLK, which is not treated as an error in `erofs_fc_get_tree`, and that leads to an UAF: erofs_fc_get_tree get_tree_bdev_flags(erofs_fc_fill_super) erofs_read_superblock erofs_init_device // sbi->dif0 is not inited yet, // return -ENOTBLK deactivate_locked_super free(sbi) if (err is -ENOTBLK) sbi->dif0.file = filp_open() // sbi UAF So if -ENOTBLK is hitted in `erofs_init_device`, it means the primary device must be a block device, and the extra device is not a block device. The error can be converted to -EINVAL.

Affected

9 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.12.35-1 (forky)linux 6.12.35-1 (forky)
linuxlinux
linuxlinux>= fb176750266a3d7f42ebdcf28e8ba40350b27847 < 65115472f741ca000d7ea4a5922214f93cd1516e65115472f741ca000d7ea4a5922214f93cd1516e
linuxlinux>= fb176750266a3d7f42ebdcf28e8ba40350b27847 < cd04beb9ce2773a16057248bb4fa424068ae3807cd04beb9ce2773a16057248bb4fa424068ae3807
linuxlinux>= fb176750266a3d7f42ebdcf28e8ba40350b27847 < 9748f2f54f66743ac77275c34886a9f890e184099748f2f54f66743ac77275c34886a9f890e18409
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 6.12 < 6.12.346.12.34
linuxlinux_kernel>= 6.13 < 6.15.36.15.3

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8LOW
vendor_redhat7.8HIGH
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