CVE-2025-21713 (GCVE-0-2025-21713)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:07 – Updated: 2026-05-11 21:04
VLAI
Title
powerpc/pseries/iommu: Don't unset window if it was never set
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries/iommu: Don't unset window if it was never set On pSeries, when user attempts to use the same vfio container used by different iommu group, the spapr_tce_set_window() returns -EPERM and the subsequent cleanup leads to the below crash. Kernel attempted to read user page (308) - exploit attempt? BUG: Kernel NULL pointer dereference on read at 0x00000308 Faulting instruction address: 0xc0000000001ce358 Oops: Kernel access of bad area, sig: 11 [#1] NIP: c0000000001ce358 LR: c0000000001ce05c CTR: c00000000005add0 <snip> NIP [c0000000001ce358] spapr_tce_unset_window+0x3b8/0x510 LR [c0000000001ce05c] spapr_tce_unset_window+0xbc/0x510 Call Trace: spapr_tce_unset_window+0xbc/0x510 (unreliable) tce_iommu_attach_group+0x24c/0x340 [vfio_iommu_spapr_tce] vfio_container_attach_group+0xec/0x240 [vfio] vfio_group_fops_unl_ioctl+0x548/0xb00 [vfio] sys_ioctl+0x754/0x1580 system_call_exception+0x13c/0x330 system_call_vectored_common+0x15c/0x2ec <snip> --- interrupt: 3000 Fix this by having null check for the tbl passed to the spapr_tce_unset_window().
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:31 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6666 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f431a8cde7f102fce412546db6e62fdbde1131a7 , < b853ff0b514c1df314246fcf94744005914b48cb (git)
Affected: f431a8cde7f102fce412546db6e62fdbde1131a7 , < ac12372a13dab3f7a2762db240bd180de8ef1e5e (git)
Affected: f431a8cde7f102fce412546db6e62fdbde1131a7 , < 17391cb2613b82f8c405570fea605af3255ff8d2 (git)
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Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.13 , ≤ 6.12.* (semver)
Unaffected: 6.13.2 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "b853ff0b514c1df314246fcf94744005914b48cb",
                  "status": "affected",
                  "version": "f431a8cde7f102fce412546db6e62fdbde1131a7",
                  "versionType": "git"
                },
                {
                  "lessThan": "ac12372a13dab3f7a2762db240bd180de8ef1e5e",
                  "status": "affected",
                  "version": "f431a8cde7f102fce412546db6e62fdbde1131a7",
                  "versionType": "git"
                },
                {
                  "lessThan": "17391cb2613b82f8c405570fea605af3255ff8d2",
                  "status": "affected",
                  "version": "f431a8cde7f102fce412546db6e62fdbde1131a7",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "arch/powerpc/platforms/pseries/iommu.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.11"
                },
                {
                  "lessThan": "6.11",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.13",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.13.*",
                  "status": "unaffected",
                  "version": "6.13.2",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.14",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.13",
                      "versionStartIncluding": "6.11",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13.2",
                      "versionStartIncluding": "6.11",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.14",
                      "versionStartIncluding": "6.11",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries/iommu: Don\u0027t unset window if it was never set\n\nOn pSeries, when user attempts to use the same vfio container used by\ndifferent iommu group, the spapr_tce_set_window() returns -EPERM\nand the subsequent cleanup leads to the below crash.\n\n   Kernel attempted to read user page (308) - exploit attempt?\n   BUG: Kernel NULL pointer dereference on read at 0x00000308\n   Faulting instruction address: 0xc0000000001ce358\n   Oops: Kernel access of bad area, sig: 11 [#1]\n   NIP:  c0000000001ce358 LR: c0000000001ce05c CTR: c00000000005add0\n   \u003csnip\u003e\n   NIP [c0000000001ce358] spapr_tce_unset_window+0x3b8/0x510\n   LR [c0000000001ce05c] spapr_tce_unset_window+0xbc/0x510\n   Call Trace:\n     spapr_tce_unset_window+0xbc/0x510 (unreliable)\n     tce_iommu_attach_group+0x24c/0x340 [vfio_iommu_spapr_tce]\n     vfio_container_attach_group+0xec/0x240 [vfio]\n     vfio_group_fops_unl_ioctl+0x548/0xb00 [vfio]\n     sys_ioctl+0x754/0x1580\n     system_call_exception+0x13c/0x330\n     system_call_vectored_common+0x15c/0x2ec\n   \u003csnip\u003e\n   --- interrupt: 3000\n\nFix this by having null check for the tbl passed to the\nspapr_tce_unset_window()."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T21:04:58.043Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/b853ff0b514c1df314246fcf94744005914b48cb"
            },
            {
              "url": "https://git.kernel.org/stable/c/ac12372a13dab3f7a2762db240bd180de8ef1e5e"
            },
            {
              "url": "https://git.kernel.org/stable/c/17391cb2613b82f8c405570fea605af3255ff8d2"
            }
          ],
          "title": "powerpc/pseries/iommu: Don\u0027t unset window if it was never set",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2025-21713",
        "datePublished": "2025-02-27T02:07:24.950Z",
        "dateReserved": "2024-12-29T08:45:45.752Z",
        "dateUpdated": "2026-05-11T21:04:58.043Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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