{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"0f29df3c3d607a9dbc14aed0e45504ced4d2e7ec","status":"affected","version":"8e8782c71595a5ad29e234ce6b3d2fce787fb07a","versionType":"git"},{"lessThan":"38d4947431b2410850409fda016b2ac9f640a4dd","status":"affected","version":"8e8782c71595a5ad29e234ce6b3d2fce787fb07a","versionType":"git"},{"lessThan":"e3e8b02d4773cfc5ad561d2e5505efde36c6927a","status":"affected","version":"8e8782c71595a5ad29e234ce6b3d2fce787fb07a","versionType":"git"},{"lessThan":"016ef0f6ca4bc9bf0330ac41bd2ea349759643e3","status":"affected","version":"8e8782c71595a5ad29e234ce6b3d2fce787fb07a","versionType":"git"},{"lessThan":"c882e8cc68fb993700dc21fd6e754001e6297934","status":"affected","version":"8e8782c71595a5ad29e234ce6b3d2fce787fb07a","versionType":"git"},{"lessThan":"6d2c973926d0612360693bc559be2ffde836151b","status":"affected","version":"8e8782c71595a5ad29e234ce6b3d2fce787fb07a","versionType":"git"},{"lessThan":"60ed00d46616a9232e42ea7a3e3c0273d7cf7543","status":"affected","version":"8e8782c71595a5ad29e234ce6b3d2fce787fb07a","versionType":"git"},{"lessThan":"cb2fc37857693b55909fb77dc2c87cfbc1cdc476","status":"affected","version":"8e8782c71595a5ad29e234ce6b3d2fce787fb07a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"3.16"},{"lessThan":"3.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.266","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.217","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.184","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-72142","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: imx: fix locked bus on SMBus block-read of 0 (atomic)\n\nSMBus 3.1 6.5.7 allows a Block Read byte count of 0, but the atomic\n(polling) path rejects it as -EPROTO. Worse, it returns without a\nNACK+STOP: the next receive cycle has already started, so the target\nkeeps holding SDA and the bus stays stuck until a power cycle for\nthis i2c controller.\n\nReading I2DR to obtain the count likewise arms the next byte on the\ncount > I2C_SMBUS_BLOCK_MAX path, which also returned -EPROTO directly\nand left the bus held.\n\nHandle both: NACK the in-flight dummy byte (TXAK) and extend msgs->len so\nthe existing last-byte handling emits STOP; the dummy byte is discarded.\nA count of 0 is a valid empty block read; a count above\nI2C_SMBUS_BLOCK_MAX is still reported as -EPROTO, but only after the bus\nhas been released.\n\nThe interrupt-driven path has the same flaw from a later commit and is\nfixed separately, as it carries a different Fixes: tag and stable range.","epss":{"date":"2026-11-06","percentile":0.12131,"score":0.00216},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793985578030,"publishedAt":1786773195489,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/0f29df3c3d607a9dbc14aed0e45504ced4d2e7ec"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/38d4947431b2410850409fda016b2ac9f640a4dd"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/e3e8b02d4773cfc5ad561d2e5505efde36c6927a"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/016ef0f6ca4bc9bf0330ac41bd2ea349759643e3"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/c882e8cc68fb993700dc21fd6e754001e6297934"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/6d2c973926d0612360693bc559be2ffde836151b"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/60ed00d46616a9232e42ea7a3e3c0273d7cf7543"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/cb2fc37857693b55909fb77dc2c87cfbc1cdc476"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/016ef0f6ca4bc9bf0330ac41bd2ea349759643e3"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/0f29df3c3d607a9dbc14aed0e45504ced4d2e7ec"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/38d4947431b2410850409fda016b2ac9f640a4dd"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/60ed00d46616a9232e42ea7a3e3c0273d7cf7543"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/6d2c973926d0612360693bc559be2ffde836151b"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/c882e8cc68fb993700dc21fd6e754001e6297934"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/cb2fc37857693b55909fb77dc2c87cfbc1cdc476"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/e3e8b02d4773cfc5ad561d2e5505efde36c6927a"}],"remediation":[],"revision":"648857b0514ba6beca1a17fd4d1c8626e58e9f4fb0d132028bf578ab88b236a6","sources":[{"modifiedAt":1793984120925,"name":"CNA: Linux","retrievedAt":1793986052095,"url":"https://www.cve.org/CVERecord?id=CVE-2026-72142"},{"modifiedAt":1793985578030,"name":"NVD","retrievedAt":1793989689796,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72142"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793986078533,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-72142"}],"ssvc":{"assessedAt":1793983918347,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"i2c: imx: fix locked bus on SMBus block-read of 0 (atomic)","updatedAt":1793989689796}