CVE-2026-74447
- Source
- https://cve.org/CVERecord?id=CVE-2026-74447
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74447.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-74447
- Downstream
- Published
- 2026-08-15T12:26:53Z
- Modified
- 2026-10-08T02:48:05Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- drm/amdkfd: fix uint32_t overflow in EOP ring buffer size alignment
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: fix uint32_t overflow in EOP ring buffer size alignment
eop_ring_buffer_size in struct queue_properties is a u32. In kfd_queue_acquire_buffers() the expected EOP buffer size is computed as ALIGN(eop_ring_buffer_size, PAGE_SIZE); ALIGN uses typeof(x), so the addition is done in 32-bit. A user-supplied size of 0xFFFFF001 wraps to 0, causing kfd_queue_buffer_get() to skip its exact-size check (gated on size != 0) and accept any BO mapped at the address. On GFX8/GFX9 the MQD cp_hqd_eop_control is then programmed for an 8KB EOP ring backed by a 4KB BO, so CP EOP writes can land past the buffer and fault the GPU.
Cast the operand to u64 so the alignment is computed in 64-bit; the size check in kfd_queue_buffer_get() then rejects the oversized request.
(cherry picked from commit ae443117b742c357bfef3a7bddabf76fcf86e9ef)
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74447.json" }- References
-
- https://git.kernel.org/stable/c/273548eb997c6be85230c1236b18784b09f6203c
- https://git.kernel.org/stable/c/6dc0b4b39ed4f11ef70f76ecea8537e35f45342b
- https://git.kernel.org/stable/c/7c54bd225d83bc1bcb44430ed4b4d3a5c36b1961
- https://git.kernel.org/stable/c/83463a96ea3c7d8ae636a4d6a0ba63c9ce410724
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74447.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74447
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedee0dc6c66a913260311876a4b2b53fe0b9bc3f94Fixed273548eb997c6be85230c1236b18784b09f6203c
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedacfc84cfa70aca5b970faf152979bc97b9f8b0c0Fixed6dc0b4b39ed4f11ef70f76ecea8537e35f45342b
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced42ea9cf2f16b7131cb7302acb3dac510968f8bdcFixed7c54bd225d83bc1bcb44430ed4b4d3a5c36b1961Fixed83463a96ea3c7d8ae636a4d6a0ba63c9ce410724
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.12.75Fixed6.12.103
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.18.16Fixed6.18.44
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.19.6Fixed6.20
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc6ce687077cc67e4f3cbd0c89cb356fbbce91f4c