CVE-2026-53188
8.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
RDMA/core: Validate the passed in fops for ib_get_ucaps()
Sashiko pointed out it is not safe to rely only on the devt because char/block alias so if the user finds a block device with the same dev_t it can masquerade as a ucap cdev fd.
Test the f_ops to only accept authentic cdevs.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 61e51682816d395307f78ae06d640089054c28ab < 96b6e98ff12d50ed5817230c6f1188e1150d225d | affected |
| Linux | Linux | 61e51682816d395307f78ae06d640089054c28ab < aa181287ebdcc53ee0ba5c2f8243e2d541ebc19b | affected |
| Linux | Linux | 61e51682816d395307f78ae06d640089054c28ab < 4a1b1ac2744694a2ecd66a84bdb1445f4ef24bee | affected |
| Linux | Linux | 6.15 | affected |
| Linux | Linux | 0 < 6.15 | unaffected |
| Linux | Linux | 6.18.36 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.13 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/96b6e98ff12d50ed5817230c6f1188e1150d225d
- https://git.kernel.org/stable/c/aa181287ebdcc53ee0ba5c2f8243e2d541ebc19b
- https://git.kernel.org/stable/c/4a1b1ac2744694a2ecd66a84bdb1445f4ef24bee
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