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CVE-2026-74417 (GCVE-0-2026-74417)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:59 – Updated: 2026-08-17 05:46
VLAI
Title
drm/radeon: fix integer overflow in radeon_align_pitch()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix integer overflow in radeon_align_pitch() radeon_align_pitch() has the same kind of overflow issue as the old amdgpu helper: both the alignment round-up add and the final 'aligned * cpp' calculation can overflow signed int. If that wraps, radeon_mode_dumb_create() can end up returning an invalid pitch or creating a zero-sized dumb buffer. Fix this by using check_add_overflow() for the alignment round-up and check_mul_overflow() for the final pitch calculation, returning 0 on overflow. Also reject zero pitch and size in radeon_mode_dumb_create(). Found via AST-based call-graph analysis using sqry.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ff72145badb834e8051719ea66e024784d000cb4 , < b7b44937c548c2c987fcdd129f8896741004bed6 (git)
Affected: ff72145badb834e8051719ea66e024784d000cb4 , < 415bb9893e249e46aa5159f7363a11512cf06fa9 (git)
Affected: ff72145badb834e8051719ea66e024784d000cb4 , < d9dfa176899d488e48bb7342d2c43ddd36e66318 (git)
Affected: ff72145badb834e8051719ea66e024784d000cb4 , < dfc7b5b5599472277e71e5bd2712740651c7c5be (git)
Affected: ff72145badb834e8051719ea66e024784d000cb4 , < ce3b24eb3ee8f82de851535f516bf21f83e82259 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.39
Unaffected: 0 , < 2.6.39 (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/radeon/radeon_gem.c"
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              "version": "0",
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              "version": "7.1.5",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.2",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: fix integer overflow in radeon_align_pitch()\n\nradeon_align_pitch() has the same kind of overflow issue as the old\namdgpu helper: both the alignment round-up add and the final\n\u0027aligned * cpp\u0027 calculation can overflow signed int.\n\nIf that wraps, radeon_mode_dumb_create() can end up returning an\ninvalid pitch or creating a zero-sized dumb buffer.\n\nFix this by using check_add_overflow() for the alignment round-up and\ncheck_mul_overflow() for the final pitch calculation, returning 0 on\noverflow. Also reject zero pitch and size in\nradeon_mode_dumb_create().\n\nFound via AST-based call-graph analysis using sqry."
        }
      ],
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            "baseSeverity": "HIGH",
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              "value": "AV:L - The bug is reached only via DRM_IOCTL_MODE_CREATE_DUMB on a local primary DRM device node (/dev/dri/card*); radeon_drm_ioctl() dispatches to radeon_mode_dumb_create() -\u003e radeon_align_pitch(), with no network, Bluetooth, or remote packet path to this legacy radeon KMS driver.\nAC:L - An attacker fully controls width, height, and bpp in the ioctl and can pick values (e.g. width=0x3FFFFFC0, bpp=32) that pass generic drm_mode_create_dumb() checks yet wrap signed-int pitch math, deterministically yielding zero or invalid pitch without races or uncontrollable layout.\nPR:L - Exploitation requires opening the primary DRM node (render clients are blocked because CREATE_DUMB lacks DRM_RENDER_ALLOW); typical access is via the video group or logind session ACLs, i.e. a low-privileged local account, not root/CAP_SYS_ADMIN in the init namespace.\nUI:N - The attacker triggers the overflow from their own process by issuing CREATE_DUMB with crafted dimensions; no victim must mount filesystems, click links, or perform any separate action.\nS:U - Impact is in-kernel GEM/TTM memory corruption and privilege escalation within the host kernel security boundary, not a KVM guest-to-host escape, IOMMU bypass, or other cross-authority scope change.\nC:H - Signed-int overflow can return pitch 0 or a bogus u32 pitch while drm_mode_create_dumb() already validated a much larger stride, creating undersized VRAM/GTT GEM objects whose metadata mismatches actual backing, enabling out-of-bounds kernel reads of adjacent allocations.\nI:H - A zero-sized or undersized dumb buffer paired with attacker-chosen width/height lets subsequent mmap, map_dumb, and GPU scanout paths treat the object as larger than allocated, corrupting adjacent kernel heap/VRAM objects and enabling control-flow hijack primitives.\nA:H - Pre-fix code allocates zero-byte GEM objects on overflow instead of failing cleanly, and malformed pitch/size metadata can provoke kernel oopses, GPU faults, or repeatable denial of service when the BO is mapped or used for display."
            }
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        }
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/b7b44937c548c2c987fcdd129f8896741004bed6"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/ce3b24eb3ee8f82de851535f516bf21f83e82259"
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      "title": "drm/radeon: fix integer overflow in radeon_align_pitch()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74417",
    "datePublished": "2026-08-15T05:59:22.731Z",
    "dateReserved": "2026-08-15T05:44:03.893Z",
    "dateUpdated": "2026-08-17T05:46:58.637Z",
    "state": "PUBLISHED"
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      "date": "2026-09-05",
      "epss": "0.0012",
      "percentile": "0.02017"
    },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-20T22:17:59+00:00",
      "cve": "CVE-2026-74417",
      "id": "CVE-2026-74417",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/radeon: fix integer overflow in radeon_align_pitch()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74417.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.