{"id":"CVE-2026-53044","state":"PUBLISHED","title":"soc/tegra: cbb: Fix incorrect ARRAY_SIZE in fabric lookup tables","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsoc/tegra: cbb: Fix incorrect ARRAY_SIZE in fabric lookup tables\n\nFix incorrect ARRAY_SIZE usage in fabric lookup tables which could\ncause out-of-bounds access during target timeout lookup.","publishedAt":"2026-06-24T16:29:51.013Z","updatedAt":"2026-08-05T12:32:51.816Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"25de5c8fe0801361182b41c42f086bd089feda14","status":"affected","lessThan":"f46870b451f7583802ed26eec8b93e138840fcd9","versionType":"git"},{"version":"25de5c8fe0801361182b41c42f086bd089feda14","status":"affected","lessThan":"5c009a5f8bb3c81f2cfb511701ce571e3c8733cd","versionType":"git"},{"version":"25de5c8fe0801361182b41c42f086bd089feda14","status":"affected","lessThan":"499f7e5ebbdd9ff0c4d532b1c432f8a61ff585b3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/tegra/cbb/tegra234-cbb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/tegra/cbb/tegra234-cbb.c"]}],"references":["https://git.kernel.org/stable/c/f46870b451f7583802ed26eec8b93e138840fcd9","https://git.kernel.org/stable/c/5c009a5f8bb3c81f2cfb511701ce571e3c8733cd","https://git.kernel.org/stable/c/499f7e5ebbdd9ff0c4d532b1c432f8a61ff585b3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53044.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53044","state":"PUBLISHED","datePublished":"2026-06-24T16:29:51.013Z","dateUpdated":"2026-08-05T12:32:51.816Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.381Z"},"containers":{"cna":{"title":"soc/tegra: cbb: Fix incorrect ARRAY_SIZE in fabric lookup tables","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsoc/tegra: cbb: Fix incorrect ARRAY_SIZE in fabric lookup tables\n\nFix incorrect ARRAY_SIZE usage in fabric lookup tables which could\ncause out-of-bounds access during target timeout lookup."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"25de5c8fe0801361182b41c42f086bd089feda14","status":"affected","lessThan":"f46870b451f7583802ed26eec8b93e138840fcd9","versionType":"git"},{"version":"25de5c8fe0801361182b41c42f086bd089feda14","status":"affected","lessThan":"5c009a5f8bb3c81f2cfb511701ce571e3c8733cd","versionType":"git"},{"version":"25de5c8fe0801361182b41c42f086bd089feda14","status":"affected","lessThan":"499f7e5ebbdd9ff0c4d532b1c432f8a61ff585b3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/tegra/cbb/tegra234-cbb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/tegra/cbb/tegra234-cbb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f46870b451f7583802ed26eec8b93e138840fcd9"},{"url":"https://git.kernel.org/stable/c/5c009a5f8bb3c81f2cfb511701ce571e3c8733cd"},{"url":"https://git.kernel.org/stable/c/499f7e5ebbdd9ff0c4d532b1c432f8a61ff585b3"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerable Tegra CBB timeout decoding runs on local SoC fabric error handling paths, reached through local device/accelerator activity or local debugfs inspection of pending CBB status rather than network packets.\nAC:L - Once a timeout error with the affected fabric and target ID is generated, the bad bounds check deterministically permits the out-of-bounds lookup; there is no race or probabilistic exploitation step.\nPR:L - In the most severe reasonable Tegra deployment, an unprivileged local user can interact with device/accelerator interfaces capable of causing fabric transactions and CBB error reporting. Real init-namespace root is not inherently required by the vulnerable decode path.\nUI:N - No victim user action is required after the attacker triggers the local fabric error condition; the interrupt handler processes the error automatically.\nS:U - The impact remains within the same kernel/SoC security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - The incorrect ARRAY_SIZE permits out-of-bounds reads from kernel lookup data and pointer dereferences during error printing. Under the required conservative rule for out-of-bounds reads, this is scored as high confidentiality impact.\nI:N - The vulnerable path reads lookup entries and MMIO timeout status but does not provide an out-of-bounds write or a clear primitive for modifying kernel data.\nA:H - The out-of-bounds lookup can dereference invalid data or perform bogus MMIO reads while handling the CBB error, plausibly causing a kernel oops or panic."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:32:51.816Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}