Vulnerability-Lookup

GHSA-74JP-62V9-RVJF

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-08 15:31

Details

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")

Severity ?

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43120"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T10:16:25Z",
    "severity": "HIGH"
  },
  "details": "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\")",
  "id": "GHSA-74jp-62v9-rvjf",
  "modified": "2026-05-08T15:31:16Z",
  "published": "2026-05-06T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43120"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c5d70bcb9d2275a1c8515a924016fcfeb4ab441"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f22c32141acdcda266b26cab2b830baf870f3e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29a3edd7004bb635d299fb9bc6f0ea4ef13ed5a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/62298a48f8b8788ad8b8464e6ffdf1ddebd2217e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/66964118f1f50ed85001c8fc9f7ab5bbdd021ee0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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

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")

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)

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{
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      "affected": [
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          "defaultStatus": "unaffected",
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          "programFiles": [
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              "versionType": "semver"
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
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        {
          "url": "https://git.kernel.org/stable/c/29a3edd7004bb635d299fb9bc6f0ea4ef13ed5a2"
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    "assignerShortName": "Linux",
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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

GHSA-74JP-62V9-RVJF

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

Tags

Sightings

Nomenclature