CVE-2026-53325

{"id": "CVE-2026-53325", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "a32073bffc656ca4bde6002b6cf7c1a8e0e22712", "lessThan": "ce800993af477fc24187349c6a20d3073140b759", "versionType": "git"}, {"status": "affected", "version": "a32073bffc656ca4bde6002b6cf7c1a8e0e22712", "lessThan": "1d7d45050e14083c1de1460c93f4063c1f0bca7b", "versionType": "git"}, {"status": "affected", "version": "a32073bffc656ca4bde6002b6cf7c1a8e0e22712", "lessThan": "3e844a63668d1c3d10a9d347d7ebf161b2f91c84", "versionType": "git"}, {"status": "affected", "version": "a32073bffc656ca4bde6002b6cf7c1a8e0e22712", "lessThan": "eb045714bc6a2bbb0befb7a31b996a196e188869", "versionType": "git"}, {"status": "affected", "version": "a32073bffc656ca4bde6002b6cf7c1a8e0e22712", "lessThan": "564b3b3f6565313eb6fa5355ffd037d6fb27897f", "versionType": "git"}, {"status": "affected", "version": "a32073bffc656ca4bde6002b6cf7c1a8e0e22712", "lessThan": "53483a9f4ee9eeb18aa866ec16cce79e136987e1", "versionType": "git"}, {"status": "affected", "version": "a32073bffc656ca4bde6002b6cf7c1a8e0e22712", "lessThan": "0aa9b27c454c53074cde592eaceb442d30341585", "versionType": "git"}, {"status": "affected", "version": "a32073bffc656ca4bde6002b6cf7c1a8e0e22712", "lessThan": "cefe535a60a2e00e09f4b2689b0c8ffc6912459a", "versionType": "git"}, {"status": "affected", "version": "a32073bffc656ca4bde6002b6cf7c1a8e0e22712", "lessThan": "b08472db93b1ccff84a7adec5779d47f0e9d3a30", "versionType": "git"}], "programFiles": ["drivers/char/agp/amd64-agp.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.18"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.18", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.260", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.211", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.177", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.144", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.95", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.37", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.14", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1.2", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/char/agp/amd64-agp.c"], "defaultStatus": "affected"}]}], "published": "2026-06-29T06:16:33.167", "references": [{"url": "https://git.kernel.org/stable/c/0aa9b27c454c53074cde592eaceb442d30341585", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1d7d45050e14083c1de1460c93f4063c1f0bca7b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3e844a63668d1c3d10a9d347d7ebf161b2f91c84", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/53483a9f4ee9eeb18aa866ec16cce79e136987e1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/564b3b3f6565313eb6fa5355ffd037d6fb27897f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b08472db93b1ccff84a7adec5779d47f0e9d3a30", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ce800993af477fc24187349c6a20d3073140b759", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cefe535a60a2e00e09f4b2689b0c8ffc6912459a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/eb045714bc6a2bbb0befb7a31b996a196e188869", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nagp/amd64: Fix broken error propagation in agp_amd64_probe()\n\nA NULL pointer dereference was observed in the AMD64 AGP driver when\nrunning in a virtualized environment (e.g. qemu/kvm) without a physical\nAMD northbridge. The crash occurs in amd64_fetch_size() when attempting\nto dereference the pointer returned by node_to_amd_nb(0).\n\nThe root cause of this crash is broken error propagation in\nagp_amd64_probe(): When no AMD northbridges are found, cache_nbs()\ncorrectly returns -ENODEV. However, the probe function erroneously\nchecks the return value against exactly -1, rather than < 0.\n\nAs a result, the hardware absence error is masked, allowing the driver\nto improperly proceed with initialization. It eventually calls\nagp_add_bridge(), which invokes amd64_fetch_size(). Since the hardware\ndoes not exist, node_to_amd_nb(0) returns NULL, leading to a General\nProtection Fault (GPF) when accessing its ->misc member.\n\nFix the issue by correcting the error check in agp_amd64_probe() to\nabort properly when cache_nbs() returns any negative error code. This\nprevents the driver from erroneously proceeding without hardware, thereby\navoiding the subsequent NULL pointer dereference at its source."}], "lastModified": "2026-07-06T20:09:56.437", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A40D7287-F27A-4158-978C-C9665E73F42A", "versionEndExcluding": "5.10.260", "versionStartIncluding": "2.6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D71C101E-388C-4A46-BD99-49049F7C5CFF", "versionEndExcluding": "5.15.211", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "333C9E30-7FD4-46A2-94EF-C1AA1F3EE28B", "versionEndExcluding": "6.1.177", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C8AD3BC8-C843-423C-B9DB-CB52F67F578E", "versionEndExcluding": "6.6.144", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4E206B86-E0E3-4394-A93F-39F2D50A8AA8", "versionEndExcluding": "6.12.95", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E08ACB05-518A-4D61-A6C4-268D1BB6BF46", "versionEndExcluding": "6.18.37", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6241DF06-E6F3-4B61-B5A2-A60F2AE5B982", "versionEndExcluding": "7.0.14", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C18FAA06-B61A-4036-A12D-F06F5135E64B", "versionEndExcluding": "7.1.2", "versionStartIncluding": "7.1"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}