{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26660","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-19T14:20:24.147Z","datePublished":"2024-04-02T06:22:10.263Z","dateUpdated":"2026-08-05T11:26:36.593Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T11:26:36.593Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Implement bounds check for stream encoder creation in DCN301\n\n'stream_enc_regs' array is an array of dcn10_stream_enc_registers\nstructures. The array is initialized with four elements, corresponding\nto the four calls to stream_enc_regs() in the array initializer. This\nmeans that valid indices for this array are 0, 1, 2, and 3.\n\nThe error message 'stream_enc_regs' 4 <= 5 below, is indicating that\nthere is an attempt to access this array with an index of 5, which is\nout of bounds. This could lead to undefined behavior\n\nHere, eng_id is used as an index to access the stream_enc_regs array. If\neng_id is 5, this would result in an out-of-bounds access on the\nstream_enc_regs array.\n\nThus fixing Buffer overflow error in dcn301_stream_encoder_create\nreported by Smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn301/dcn301_resource.c:1011 dcn301_stream_encoder_create() error: buffer overflow 'stream_enc_regs' 4 <= 5"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The affected code is in the amdgpu display core and runs only during local device probe (`amdgpu_dm_init` → `dc_create` → `dcn301_resource_construct`); there is no network, adjacent-network, or removable-device path to it.\nAC:H - Reaching the out-of-bounds index requires `eng_id` >= 4, but `eng_id` is the loop counter in `resource_construct()` bounded by `res_cap_dcn301.num_stream_encoder`, a compile-time constant of 4 that no code path modifies — the required condition is entirely outside any attacker's influence.\nPR:L - The code executes during driver probe at boot or module load, which is not exposed to unprivileged callers; scoring the more severe of the arguable options (module autoload/probe reachable by a low-privileged local user) rather than requiring full root.\nUI:N - Resource-pool construction happens automatically during amdgpu initialization with no victim action required.\nS:U - Any resulting corruption stays within the kernel's own security authority on the affected host; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The out-of-bounds read past `stream_enc_regs[]` yields values that become MMIO register offsets, so the encoder code would read arbitrary GPU registers outside the intended DIO block, exposing device and potentially framebuffer/engine state.\nI:H - The same bogus offsets are used for `REG_WRITE`/`REG_UPDATE`, giving writes to arbitrary GPU registers in the aperture — arbitrary device-state corruption on a DMA-capable engine that on APUs shares system memory.\nA:H - Programming a display stream encoder through a garbage register-offset table would misprogram or hang the GPU and can oops the display pipeline, taking down the system's graphics and potentially the machine."}]}],"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/display/dc/resource/dcn301/dcn301_resource.c"],"versions":[{"version":"3a83e4e64bb1522ddac67ffc787d1c38291e1a65","lessThan":"42442f74314d41ddc68227047036fa3e78940054","status":"affected","versionType":"git"},{"version":"3a83e4e64bb1522ddac67ffc787d1c38291e1a65","lessThan":"efdd665ce1a1634b8c1dad5e7f6baaef3e131d0a","status":"affected","versionType":"git"},{"version":"3a83e4e64bb1522ddac67ffc787d1c38291e1a65","lessThan":"cd9bd10c59e3c1446680514fd3097c5b00d3712d","status":"affected","versionType":"git"},{"version":"3a83e4e64bb1522ddac67ffc787d1c38291e1a65","lessThan":"a938eab9586eea31cfd129a507f552efae14d738","status":"affected","versionType":"git"},{"version":"3a83e4e64bb1522ddac67ffc787d1c38291e1a65","lessThan":"58fca355ad37dcb5f785d9095db5f748b79c5dc2","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/display/dc/resource/dcn301/dcn301_resource.c"],"versions":[{"version":"5.11","status":"affected"},{"version":"0","lessThan":"5.11","status":"unaffected","versionType":"semver"},{"version":"5.15.149","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.78","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.17","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.5","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8","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":"5.11","versionEndExcluding":"5.15.149"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.1.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.6.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.7.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.8"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/42442f74314d41ddc68227047036fa3e78940054"},{"url":"https://git.kernel.org/stable/c/efdd665ce1a1634b8c1dad5e7f6baaef3e131d0a"},{"url":"https://git.kernel.org/stable/c/cd9bd10c59e3c1446680514fd3097c5b00d3712d"},{"url":"https://git.kernel.org/stable/c/a938eab9586eea31cfd129a507f552efae14d738"},{"url":"https://git.kernel.org/stable/c/58fca355ad37dcb5f785d9095db5f748b79c5dc2"}],"title":"drm/amd/display: 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