{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50282", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.984Z", "datePublished": "2024-11-19T01:30:24.581Z", "dateUpdated": "2026-08-05T11:43:01.548Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:43:01.548Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: add missing size check in amdgpu_debugfs_gprwave_read()\n\nAvoid a possible buffer overflow if size is larger than 4K.\n\n(cherry picked from commit f5d873f5825b40d886d03bd2aede91d4cf002434)" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Exploitation requires opening the local debugfs node /sys/kernel/debug/dri/N/amdgpu_gprwave and issuing an ioctl plus read() against it. There is no network-facing path to this code.\nAC:L - The overflow is fully deterministic — the attacker directly supplies the unvalidated `size` argument to read(), and `wave_read_regs()` writes exactly `size>>2` words into the fixed 4096-byte buffer with no race or unpredictable precondition. No specific memory layout is needed to trigger it.\nPR:L - In the vulnerable kernels the node was mode 0444 and all debugfs directories default to 0755, so an unprivileged local user reaches it on any system that mounts debugfs with kernel-default permissions or relaxes it for GPU tooling (Android, embedded/automotive images, ROCm/umr-enabled compute hosts); the companion stable fix \"Regular users shouldn't have read access\" confirms regular users had it. No capability check exists on the path itself.\nUI:N - The attacker performs open/ioctl/read entirely on its own; no victim action or interaction is required at any point.\nS:U - The corruption is confined to the kernel slab of the same system and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The drain loop copies `size` bytes from the 4096-byte buffer to userspace, directly disclosing tens of kilobytes of adjacent kernel heap — defeating KASLR and leaking credentials, keys, and other slab contents, and this leak occurs even where the vgpr/sgpr callback is absent.\nI:H - The heap buffer overflow writes an attacker-chosen number of bytes past the kmalloc-4k allocation with GPU wave-register data that a co-operating render-node shader can populate, giving a controlled slab overwrite of adjacent kernel objects — a standard primitive for control-flow hijack and privilege escalation.\nA:H - Overwriting many kilobytes of adjacent slab objects reliably corrupts kernel structures and produces an oops or panic, and the attacker can repeat it at will." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c" ], "versions": [ { "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21", "lessThan": "673bdb4200c092692f83b5f7ba3df57021d52d29", "status": "affected", "versionType": "git" }, { "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21", "lessThan": "8906728f2fbd6504cb488f4afdd66af28f330a7a", "status": "affected", "versionType": "git" }, { "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21", "lessThan": "2faaee36e6e30f9efc7fa6bcb0bdcbe05c23f51f", "status": "affected", "versionType": "git" }, { "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21", "lessThan": "4d75b9468021c73108b4439794d69e892b1d24e3", "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/gpu/drm/amd/amdgpu/amdgpu_debugfs.c" ], "versions": [ { "version": "4.2", "status": "affected" }, { "version": "0", "lessThan": "4.2", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.324", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.61", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.8", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "4.2", "versionEndExcluding": "4.19.324" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.6.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.11.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/673bdb4200c092692f83b5f7ba3df57021d52d29" }, { "url": "https://git.kernel.org/stable/c/8906728f2fbd6504cb488f4afdd66af28f330a7a" }, { "url": "https://git.kernel.org/stable/c/2faaee36e6e30f9efc7fa6bcb0bdcbe05c23f51f" }, { "url": "https://git.kernel.org/stable/c/4d75b9468021c73108b4439794d69e892b1d24e3" } ], "title": "drm/amdgpu: add missing size check in amdgpu_debugfs_gprwave_read()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-120", "lang": "en", "description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2025-02-18T16:07:41.785421Z", "id": "CVE-2024-50282", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-13T17:54:33.240Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:28:01.440Z" } } ] } }