PT-2026-37468 · Linux+2 · Linux Kernel+2
CVE-2026-43128
·
Published
2026-05-06
·
Updated
2026-07-24
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An issue exists in the RDMA umem component where a failure in the
ib umem dmabuf map pages() function within ib umem dmabuf get pinned with dma device() leads to a double dma buf unpin operation. When the mapping fails, the dmabuf is unpinned immediately, but the umem dmabuf->pinned flag remains set. Subsequently, when ib umem release() is called, it triggers ib umem dmabuf revoke(), which attempts to call dma buf unpin() a second time.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Double Free
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Rocky Linux