CVE-2026-68276

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68276", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.379Z", "datePublished": "2026-08-10T12:01:51.789Z", "dateUpdated": "2026-08-17T05:02:10.194Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:02:10.194Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/gfx: fix cleaner shader IB buffer overflow\n\nThe cleaner shader sysfs path allocates a 16-dword (64 byte) IB but\nincorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is\n0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a\nkernel page fault.\n\nThe IB only needs to be a minimal NOP shell to schedule the job; the\ncleaner shader itself is emitted on the ring via emit_cleaner_shader().\nFill 16 dwords to match the allocation.\n\nv2: Use ib_size_dw variable (Lijo)\n\n(cherry picked from commit bf21af331ebf72d0935fd70c73192414a422c03a)"}], "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_gfx.c"], "versions": [{"version": "d361ad5d2fc0e4d59d5d538092c9b37889756642", "lessThan": "201633f47b542a99bb7baafdfcda7781249fb3d9", "status": "affected", "versionType": "git"}, {"version": "d361ad5d2fc0e4d59d5d538092c9b37889756642", "lessThan": "e28420e36542ae8b66a5bdcec419525f521bddf8", "status": "affected", "versionType": "git"}, {"version": "d361ad5d2fc0e4d59d5d538092c9b37889756642", "lessThan": "9cd9a983769a4d0e9cc80a287316ee79685d38b3", "status": "affected", "versionType": "git"}, {"version": "d361ad5d2fc0e4d59d5d538092c9b37889756642", "lessThan": "3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3", "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_gfx.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "6.12", "versionEndExcluding": "6.12.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/201633f47b542a99bb7baafdfcda7781249fb3d9"}, {"url": "https://git.kernel.org/stable/c/e28420e36542ae8b66a5bdcec419525f521bddf8"}, {"url": "https://git.kernel.org/stable/c/9cd9a983769a4d0e9cc80a287316ee79685d38b3"}, {"url": "https://git.kernel.org/stable/c/3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3"}], "title": "drm/amdgpu/gfx: fix cleaner shader IB buffer overflow", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "201633f47b542a99bb7baafdfcda7781249fb3d9", "status": "affected", "version": "d361ad5d2fc0e4d59d5d538092c9b37889756642", "versionType": "git"}, {"lessThan": "e28420e36542ae8b66a5bdcec419525f521bddf8", "status": "affected", "version": "d361ad5d2fc0e4d59d5d538092c9b37889756642", "versionType": "git"}, {"lessThan": "9cd9a983769a4d0e9cc80a287316ee79685d38b3", "status": "affected", "version": "d361ad5d2fc0e4d59d5d538092c9b37889756642", "versionType": "git"}, {"lessThan": "3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3", "status": "affected", "version": "d361ad5d2fc0e4d59d5d538092c9b37889756642", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/gfx: fix cleaner shader IB buffer overflow\n\nThe cleaner shader sysfs path allocates a 16-dword (64 byte) IB but\nincorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is\n0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a\nkernel page fault.\n\nThe IB only needs to be a minimal NOP shell to schedule the job; the\ncleaner shader itself is emitted on the ring via emit_cleaner_shader().\nFill 16 dwords to match the allocation.\n\nv2: Use ib_size_dw variable (Lijo)\n\n(cherry picked from commit bf21af331ebf72d0935fd70c73192414a422c03a)"}], "id": "CVE-2026-68276", "lastModified": "2026-08-17T05:18:30.190", "metrics": {}, "published": "2026-08-10T13:20:16.693", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/201633f47b542a99bb7baafdfcda7781249fb3d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9cd9a983769a4d0e9cc80a287316ee79685d38b3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e28420e36542ae8b66a5bdcec419525f521bddf8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: `drm/amdgpu/gfx` buffer overflow leads to denial of service", "id": "2513330", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513330"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amdgpu/gfx: fix cleaner shader IB buffer overflow\nThe cleaner shader sysfs path allocates a 16-dword (64 byte) IB but\nincorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is\n0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a\nkernel page fault.\nThe IB only needs to be a minimal NOP shell to schedule the job; the\ncleaner shader itself is emitted on the ring via emit_cleaner_shader().\nFill 16 dwords to match the allocation.\nv2: Use ib_size_dw variable (Lijo)\n(cherry picked from commit bf21af331ebf72d0935fd70c73192414a422c03a)", "A flaw was found in the Linux kernel's `drm/amdgpu/gfx` component. A local attacker could exploit a buffer overflow vulnerability in the cleaner shader's `sysfs` path. This occurs because the system incorrectly writes 256 double words (dwords) into a buffer allocated for only 16 dwords (64 bytes). Successful exploitation leads to a kernel page fault, causing a denial of service (DoS) on the system."], "name": "CVE-2026-68276", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:01:51Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68276\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68276\nhttps://git.kernel.org/stable/c/201633f47b542a99bb7baafdfcda7781249fb3d9\nhttps://git.kernel.org/stable/c/3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3\nhttps://git.kernel.org/stable/c/9cd9a983769a4d0e9cc80a287316ee79685d38b3\nhttps://git.kernel.org/stable/c/e28420e36542ae8b66a5bdcec419525f521bddf8"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d361ad5d2fc0e4d59d5d538092c9b37889756642,201633f47b542a99bb7baafdfcda7781249fb3d9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d361ad5d2fc0e4d59d5d538092c9b37889756642,e28420e36542ae8b66a5bdcec419525f521bddf8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d361ad5d2fc0e4d59d5d538092c9b37889756642,9cd9a983769a4d0e9cc80a287316ee79685d38b3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d361ad5d2fc0e4d59d5d538092c9b37889756642,3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.103,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T15:30:05.873561+00:00", "updated": "2026-08-13T06:15:15.346881+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}