Vulnerability-Lookup

FKIE_CVE-2026-43120

Vulnerability from fkie_nvd - Published: 2026-05-06 10:16 - Updated: 2026-05-12 21:37

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/irdma: Fix double free related to rereg_user_mr If IB_MR_REREG_TRANS is set during rereg_user_mr, the umem will be released and a new one will be allocated in irdma_rereg_mr_trans. If any step of irdma_rereg_mr_trans fails after the new umem is allocated, it releases the umem, but does not set iwmr->region to NULL. The problem is that this failure is propagated to the user, who will then call ibv_dereg_mr (as they should). Then, the dereg_mr path will see a non-NULL umem and attempt to call ib_umem_release again. Fix this by setting iwmr->region to NULL after ib_umem_release. Fixed: 5ac388db27c4 ("RDMA/irdma: Add support to re-register a memory region")

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0c5d70bcb9d2275a1c8515a924016fcfeb4ab441	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0f22c32141acdcda266b26cab2b830baf870f3e0	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/29a3edd7004bb635d299fb9bc6f0ea4ef13ed5a2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/62298a48f8b8788ad8b8464e6ffdf1ddebd2217e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/66964118f1f50ed85001c8fc9f7ab5bbdd021ee0	Patch

Impacted products

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

JSON

To clipboard

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix double free related to rereg_user_mr\n\nIf IB_MR_REREG_TRANS is set during rereg_user_mr, the\numem will be released and a new one will be allocated\nin irdma_rereg_mr_trans. If any step of irdma_rereg_mr_trans\nfails after the new umem is allocated, it releases the umem,\nbut does not set iwmr-\u003eregion to NULL. The problem is that\nthis failure is propagated to the user, who will then call\nibv_dereg_mr (as they should). Then, the dereg_mr path will\nsee a non-NULL umem and attempt to call ib_umem_release again.\n\nFix this by setting iwmr-\u003eregion to NULL after ib_umem_release.\n\nFixed: 5ac388db27c4 (\"RDMA/irdma: Add support to re-register a memory region\")"
    }
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CVE-2026-43120 (GCVE-0-2026-43120)

Vulnerability from cvelistv5 – Published: 2026-05-06 07:40 – Updated: 2026-05-11 22:18

Title

RDMA/irdma: Fix double free related to rereg_user_mr

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

5 references

URL	Tags
https://git.kernel.org/stable/c/62298a48f8b8788ad…
https://git.kernel.org/stable/c/66964118f1f50ed85…
https://git.kernel.org/stable/c/0f22c32141acdcda2…
https://git.kernel.org/stable/c/0c5d70bcb9d2275a1…
https://git.kernel.org/stable/c/29a3edd7004bb635d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 715fdb3b30541cc8180b7cdc6aa9f8c307afdf25 , < 62298a48f8b8788ad8b8464e6ffdf1ddebd2217e (git) Affected: 5ac388db27c443dadfbb0b8b23fa7ccf429d901a , < 66964118f1f50ed85001c8fc9f7ab5bbdd021ee0 (git) Affected: 5ac388db27c443dadfbb0b8b23fa7ccf429d901a , < 0f22c32141acdcda266b26cab2b830baf870f3e0 (git) Affected: 5ac388db27c443dadfbb0b8b23fa7ccf429d901a , < 0c5d70bcb9d2275a1c8515a924016fcfeb4ab441 (git) Affected: 5ac388db27c443dadfbb0b8b23fa7ccf429d901a , < 29a3edd7004bb635d299fb9bc6f0ea4ef13ed5a2 (git)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.83 , ≤ 6.12.* (semver) Unaffected: 6.18.24 , ≤ 6.18.* (semver) Unaffected: 6.19.14 , ≤ 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-2026-43120

CVE-2026-43120 (GCVE-0-2026-43120)

Tags

Sightings

Nomenclature