Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-64191

In the Linux kernel, the following vulnerability has been resolved: i2c: stub: Reject I2C block transfers with invalid length The I2C_SMBUS_I2C_BLOCK_DATA case in stub_xfer() uses data->block[0] as the transfer length. The existing check only clamps it to avoid overrunning the chip->words[256] register array, but does not validate it against I2C_SMBUS_BLOCK_MAX (32), which is the limit of the union i2c_smbus_data.block buffer (34 bytes total). The driver is a development/test tool (CONFIG_I2C_
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c844148045f357891b27fa920253974a646b31db6d8ff5a10b919a7a9e010632
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/i2c/i2c-stub.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.33"},{"lessThan":"2.6.33","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.260","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.211","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.177","versionType":"semver"},{"le…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/i2c/i2c-stub.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7e9072dbd5f2f17934751873450d2c22080ead80","status":"affected","version":"4710317891e4824ce1510a6b5066abbd3e917750","versionType":"git"},{"lessThan":"21e87f336ac6303fed54a69b1d0d79a23b25c8d0","status":"affected","version":"4710317891e4824ce1510a6b5066abbd3e917750","versionType":"git"},{"lessThan":"3fd225f3e4cd67ec8ddab1afed9da03c7c43537c","status":"affected","version":"4710317891e4824ce1510a6…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/i2c/i2c-stub.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.33"},{"lessThan":"2.6.33","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.260","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.211","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.177","versionType":"semver"},{"le…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/i2c/i2c-stub.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7e9072dbd5f2f17934751873450d2c22080ead80","status":"affected","version":"4710317891e4824ce1510a6b5066abbd3e917750","versionType":"git"},{"lessThan":"21e87f336ac6303fed54a69b1d0d79a23b25c8d0","status":"affected","version":"4710317891e4824ce1510a6b5066abbd3e917750","versionType":"git"},{"lessThan":"3fd225f3e4cd67ec8ddab1afed9da03c7c43537c","status":"affected","version":"4710317891e4824ce1510a6…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/0526931b16e5a118d367b7bfce7d797e63f7ac69"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/1c4ffe6b4f04365485ed58d64c9bb86b46fc9037"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/21e87f336ac6303fed54a69b1d0d79a23b25c8d0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/3fd225f3e4cd67ec8ddab1afed9da03c7c43537c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/4bd8635f28c135a08aac6badcd7d9b5cdb34335f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/5f4d2bd028ebb6e4c09a9d64842546022321d4a7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/6036b5067a8199ba7a2dc7b377d4b9dd276d5f9e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/7e9072dbd5f2f17934751873450d2c22080ead80"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:157e7c080f6b1fda6286d97283455eb0e2e8533b066dbac644ca4147848920fe · sha256:c2f2c50dccb514b2… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer