{"id":"CVE-2025-21713","state":"PUBLISHED","title":"powerpc/pseries/iommu: Don't unset window if it was never set","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries/iommu: Don't 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   <snip>\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   <snip>\n   --- interrupt: 3000\n\nFix this by having null check for the tbl passed to the\nspapr_tce_unset_window().","publishedAt":"2025-02-27T02:07:24.950Z","updatedAt":"2026-05-11T21:04:58.043Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f431a8cde7f102fce412546db6e62fdbde1131a7","status":"affected","lessThan":"b853ff0b514c1df314246fcf94744005914b48cb","versionType":"git"},{"version":"f431a8cde7f102fce412546db6e62fdbde1131a7","status":"affected","lessThan":"ac12372a13dab3f7a2762db240bd180de8ef1e5e","versionType":"git"},{"version":"f431a8cde7f102fce412546db6e62fdbde1131a7","status":"affected","lessThan":"17391cb2613b82f8c405570fea605af3255ff8d2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/powerpc/platforms/pseries/iommu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.12.13","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.2","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/powerpc/platforms/pseries/iommu.c"]}],"references":["https://git.kernel.org/stable/c/b853ff0b514c1df314246fcf94744005914b48cb","https://git.kernel.org/stable/c/ac12372a13dab3f7a2762db240bd180de8ef1e5e","https://git.kernel.org/stable/c/17391cb2613b82f8c405570fea605af3255ff8d2"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/21xxx/CVE-2025-21713.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-21713","state":"PUBLISHED","datePublished":"2025-02-27T02:07:24.950Z","dateUpdated":"2026-05-11T21:04:58.043Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-12-29T08:45:45.752Z"},"containers":{"cna":{"title":"powerpc/pseries/iommu: Don't unset window if it was never set","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries/iommu: Don't 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   <snip>\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   <snip>\n   --- interrupt: 3000\n\nFix this by having null check for the tbl passed to the\nspapr_tce_unset_window()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f431a8cde7f102fce412546db6e62fdbde1131a7","status":"affected","lessThan":"b853ff0b514c1df314246fcf94744005914b48cb","versionType":"git"},{"version":"f431a8cde7f102fce412546db6e62fdbde1131a7","status":"affected","lessThan":"ac12372a13dab3f7a2762db240bd180de8ef1e5e","versionType":"git"},{"version":"f431a8cde7f102fce412546db6e62fdbde1131a7","status":"affected","lessThan":"17391cb2613b82f8c405570fea605af3255ff8d2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/powerpc/platforms/pseries/iommu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.12.13","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.2","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/powerpc/platforms/pseries/iommu.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:04:58.043Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.12.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.13.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.14"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2025-21713","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:31:17.169726Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","type":"CWE","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:36:42.186Z"}}]}}}