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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-43128 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Fix double dma_buf_unpin in failure path In ib_umem_dmabuf_get_pinned_with_dma_device(), the call to ib_umem_dmabuf_map_pages() can fail. If this occurs, the dmabuf is immediately unpinned but the umem_dmabuf->pinned flag is still set. Then, when ib_umem_release() is called, it calls ib_umem_dmabuf_revoke() which will call dma_buf_unpin() again. Fix this by removing the immediate unpin upon failure and just let the ib_umem_release/revoke path handle it. This also ensures the proper unmap-unpin unwind ordering if the dmabuf_map_pages call happened to fail due to dma_resv_wait_timeout (and therefore has a non-NULL umem_dmabuf->sgt).


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/104016eb671e19709721c1b0048dd912dc2e96be kernel.org Patch 
https://git.kernel.org/stable/c/40126bcbefa79ea86672e05dae608596bab38319 kernel.org Patch 
https://git.kernel.org/stable/c/70542b69abff34d24b11ae0bb200cc7a766d18df kernel.org Patch 
https://git.kernel.org/stable/c/b324327ff6f48d8065dca67eb3b91357e72726bd kernel.org Patch 
https://git.kernel.org/stable/c/ba3bf0f1bf1d5d0404678485e872980532fcc2c4 kernel.org Patch 
https://git.kernel.org/stable/c/d3e32e2f3262f1b25d77c085ace38e2cc4ad75cf kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-415 Double Free cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43128
NVD Published Date:
05/06/2026
NVD Last Modified:
05/08/2026
Source:
kernel.org