Vulnerability-Lookup

FKIE_CVE-2026-43128

Vulnerability from fkie_nvd - Published: 2026-05-06 12:16 - Updated: 2026-05-08 17:52

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

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).

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/104016eb671e19709721c1b0048dd912dc2e96be	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/40126bcbefa79ea86672e05dae608596bab38319	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/70542b69abff34d24b11ae0bb200cc7a766d18df	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b324327ff6f48d8065dca67eb3b91357e72726bd	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ba3bf0f1bf1d5d0404678485e872980532fcc2c4	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d3e32e2f3262f1b25d77c085ace38e2cc4ad75cf	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0

JSON

To clipboard

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      "type": "Primary"
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  ]
}

CVE-2026-43128 (GCVE-0-2026-43128)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-11 22:18

Title

RDMA/umem: Fix double dma_buf_unpin in failure path

Summary

Severity ?

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/70542b69abff34d24…
https://git.kernel.org/stable/c/b324327ff6f48d806…
https://git.kernel.org/stable/c/ba3bf0f1bf1d5d040…
https://git.kernel.org/stable/c/d3e32e2f3262f1b25…
https://git.kernel.org/stable/c/40126bcbefa79ea86…
https://git.kernel.org/stable/c/104016eb671e19709…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1e4df4a21c5ac722df1099eee30cad9246c889b5 , < 70542b69abff34d24b11ae0bb200cc7a766d18df (git) Affected: 1e4df4a21c5ac722df1099eee30cad9246c889b5 , < b324327ff6f48d8065dca67eb3b91357e72726bd (git) Affected: 1e4df4a21c5ac722df1099eee30cad9246c889b5 , < ba3bf0f1bf1d5d0404678485e872980532fcc2c4 (git) Affected: 1e4df4a21c5ac722df1099eee30cad9246c889b5 , < d3e32e2f3262f1b25d77c085ace38e2cc4ad75cf (git) Affected: 1e4df4a21c5ac722df1099eee30cad9246c889b5 , < 40126bcbefa79ea86672e05dae608596bab38319 (git) Affected: 1e4df4a21c5ac722df1099eee30cad9246c889b5 , < 104016eb671e19709721c1b0048dd912dc2e96be (git)
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 6.1.165 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-43128

CVE-2026-43128 (GCVE-0-2026-43128)

Tags

Sightings

Nomenclature