CVE-2025-71099 (GCVE-0-2025-71099)
Vulnerability from cvelistv5
Published
2026-01-13 15:34
Modified
2026-08-05 12:12
Severity ?
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: drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl() In xe_oa_add_config_ioctl(), we accessed oa_config->id after dropping metrics_lock. Since this lock protects the lifetime of oa_config, an attacker could guess the id and call xe_oa_remove_config_ioctl() with perfect timing, freeing oa_config before we dereference it, leading to a potential use-after-free. Fix this by caching the id in a local variable while holding the lock. v2: (Matt A) - Dropped mutex_unlock(&oa->metrics_lock) ordering change from xe_oa_remove_config_ioctl() (cherry picked from commit 28aeaed130e8e587fd1b73b6d66ca41ccc5a1a31)
References
Impacted products
Vendor Product Version
Linux Linux Version: cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0
Version: cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0
Version: cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_oa.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c6d30b65b7a44dac52ad49513268adbf19eab4a2",
              "status": "affected",
              "version": "cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0",
              "versionType": "git"
            },
            {
              "lessThan": "7cdb9a9da935c687563cc682155461fef5f9b48d",
              "status": "affected",
              "version": "cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0",
              "versionType": "git"
            },
            {
              "lessThan": "dcb171931954c51a1a7250d558f02b8f36570783",
              "status": "affected",
              "version": "cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_oa.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": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.64",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.4",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()\n\nIn xe_oa_add_config_ioctl(), we accessed oa_config-\u003eid after dropping\nmetrics_lock. Since this lock protects the lifetime of oa_config, an\nattacker could guess the id and call xe_oa_remove_config_ioctl() with\nperfect timing, freeing oa_config before we dereference it, leading to\na potential use-after-free.\n\nFix this by caching the id in a local variable while holding the lock.\n\nv2: (Matt A)\n- Dropped mutex_unlock(\u0026oa-\u003emetrics_lock) ordering change from\n  xe_oa_remove_config_ioctl()\n\n(cherry picked from commit 28aeaed130e8e587fd1b73b6d66ca41ccc5a1a31)"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is reached through DRM_XE_OBSERVATION add/remove ioctls on a local Xe DRM device node; no network or physical path exists.\nAC:L - The attacker controls concurrent add and remove operations, and IDs are predictable because the IDR starts at 1 and selects the lowest available value. The race can be attempted repeatedly without relying on victim-controlled state.\nPR:L - The supported observation_paranoid=0 configuration permits ordinary render-node clients without capabilities. Although the default requires initial-namespace CAP_PERFMON or CAP_SYS_ADMIN, the higher-severity reasonable deployment requires only an unprivileged local account with device access.\nUI:N - The attacker triggers both sides of the race directly through concurrent ioctls, without any victim action.\nS:U - Exploitation affects the host kernel within its existing security authority and does not inherently cross a VM, IOMMU, or separate authorization boundary.\nC:H - The stale oa_config can be dereferenced after RCU reclamation and attacker-directed slab reuse, potentially exposing kernel memory through the reclaimed ID or debug UUID accesses.\nI:H - The use-after-free permits attacker-influenced heap reuse and must be treated as potentially yielding memory-corruption primitives, arbitrary writes, or kernel code execution.\nA:H - Dereferencing reclaimed or poisoned slab memory can cause a kernel oops or panic, and the attacker can repeatedly trigger the race."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:12:04.137Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c6d30b65b7a44dac52ad49513268adbf19eab4a2"
        },
        {
          "url": "https://git.kernel.org/stable/c/7cdb9a9da935c687563cc682155461fef5f9b48d"
        },
        {
          "url": "https://git.kernel.org/stable/c/dcb171931954c51a1a7250d558f02b8f36570783"
        }
      ],
      "title": "drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71099",
    "datePublished": "2026-01-13T15:34:58.359Z",
    "dateReserved": "2026-01-13T15:30:19.650Z",
    "dateUpdated": "2026-08-05T12:12:04.137Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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