{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53172","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.389Z","datePublished":"2026-06-25T08:38:50.056Z","dateUpdated":"2026-06-28T06:39:45.157Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:39:45.157Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/ethosu: fix IFM region index out-of-bounds in command stream parser\n\nNPU_SET_IFM_REGION extracts the region index with param & 0x7f, giving\na maximum value of 127. However region_size[] and output_region[] in\nstruct ethosu_validated_cmdstream_info are both sized to\nNPU_BASEP_REGION_MAX (8), giving valid indices [0..7].\n\nEvery other region assignment in the same switch uses param & 0x7:\n  NPU_SET_OFM_REGION:  st.ofm.region  = param & 0x7;\n  NPU_SET_IFM2_REGION: st.ifm2.region = param & 0x7;\n  NPU_SET_WEIGHT_REGION: st.weight[0].region = param & 0x7;\n  NPU_SET_SCALE_REGION:  st.scale[0].region  = param & 0x7;\n\nThe 0x7f mask on IFM is inconsistent and appears to be a typo.\n\nfeat_matrix_length() and calc_sizes() use the region index directly\nas an array subscript into the kzalloc'd info struct:\n  info->region_size[fm->region] = max(...);\n\nA userspace caller supplying NPU_SET_IFM_REGION with param > 7 causes\na write up to 127*8 = 1016 bytes past the start of region_size[],\ncorrupting adjacent kernel heap data.\n\nFix by applying the same & 0x7 mask used by all other region\nassignments."}],"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"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/ethosu/ethosu_gem.c"],"versions":[{"version":"5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b","lessThan":"ee7bed779def61ebff1b92b0e851f412176fa416","status":"affected","versionType":"git"},{"version":"5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b","lessThan":"00f547e0dfecf83014fb32bcba587c6b684c1362","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/accel/ethosu/ethosu_gem.c"],"versions":[{"version":"6.19","status":"affected"},{"version":"0","lessThan":"6.19","status":"unaffected","versionType":"semver"},{"version":"7.0.13","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"6.19","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ee7bed779def61ebff1b92b0e851f412176fa416"},{"url":"https://git.kernel.org/stable/c/00f547e0dfecf83014fb32bcba587c6b684c1362"}],"title":"accel/ethosu: fix IFM region index out-of-bounds in command stream parser","x_generator":{"engine":"bippy-1.2.0"}}}}