{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53325","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.398Z","datePublished":"2026-06-29T04:53:35.833Z","dateUpdated":"2026-07-04T11:51:03.918Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-07-04T11:51:03.918Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/agp/amd64-agp.c"],"versions":[{"version":"a32073bffc656ca4bde6002b6cf7c1a8e0e22712","lessThan":"ce800993af477fc24187349c6a20d3073140b759","status":"affected","versionType":"git"},{"version":"a32073bffc656ca4bde6002b6cf7c1a8e0e22712","lessThan":"1d7d45050e14083c1de1460c93f4063c1f0bca7b","status":"affected","versionType":"git"},{"version":"a32073bffc656ca4bde6002b6cf7c1a8e0e22712","lessThan":"3e844a63668d1c3d10a9d347d7ebf161b2f91c84","status":"affected","versionType":"git"},{"version":"a32073bffc656ca4bde6002b6cf7c1a8e0e22712","lessThan":"eb045714bc6a2bbb0befb7a31b996a196e188869","status":"affected","versionType":"git"},{"version":"a32073bffc656ca4bde6002b6cf7c1a8e0e22712","lessThan":"564b3b3f6565313eb6fa5355ffd037d6fb27897f","status":"affected","versionType":"git"},{"version":"a32073bffc656ca4bde6002b6cf7c1a8e0e22712","lessThan":"53483a9f4ee9eeb18aa866ec16cce79e136987e1","status":"affected","versionType":"git"},{"version":"a32073bffc656ca4bde6002b6cf7c1a8e0e22712","lessThan":"0aa9b27c454c53074cde592eaceb442d30341585","status":"affected","versionType":"git"},{"version":"a32073bffc656ca4bde6002b6cf7c1a8e0e22712","lessThan":"cefe535a60a2e00e09f4b2689b0c8ffc6912459a","status":"affected","versionType":"git"},{"version":"a32073bffc656ca4bde6002b6cf7c1a8e0e22712","lessThan":"b08472db93b1ccff84a7adec5779d47f0e9d3a30","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/agp/amd64-agp.c"],"versions":[{"version":"2.6.18","status":"affected"},{"version":"0","lessThan":"2.6.18","status":"unaffected","versionType":"semver"},{"version":"5.10.260","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.211","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.177","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.144","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.95","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.37","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.14","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1.2","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2-rc1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"5.10.260"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"5.15.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"6.1.177"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"6.6.144"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"6.12.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"6.18.37"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"7.0.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"7.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"7.2-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ce800993af477fc24187349c6a20d3073140b759"},{"url":"https://git.kernel.org/stable/c/1d7d45050e14083c1de1460c93f4063c1f0bca7b"},{"url":"https://git.kernel.org/stable/c/3e844a63668d1c3d10a9d347d7ebf161b2f91c84"},{"url":"https://git.kernel.org/stable/c/eb045714bc6a2bbb0befb7a31b996a196e188869"},{"url":"https://git.kernel.org/stable/c/564b3b3f6565313eb6fa5355ffd037d6fb27897f"},{"url":"https://git.kernel.org/stable/c/53483a9f4ee9eeb18aa866ec16cce79e136987e1"},{"url":"https://git.kernel.org/stable/c/0aa9b27c454c53074cde592eaceb442d30341585"},{"url":"https://git.kernel.org/stable/c/cefe535a60a2e00e09f4b2689b0c8ffc6912459a"},{"url":"https://git.kernel.org/stable/c/b08472db93b1ccff84a7adec5779d47f0e9d3a30"}],"title":"agp/amd64: Fix broken error propagation in agp_amd64_probe()","x_generator":{"engine":"bippy-1.2.0"}}}}