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CVE-2026-46064

In the Linux kernel, the following vulnerability has been resolved: ibmasm: fix heap over-read in ibmasm_send_i2o_message() The ibmasm_send_i2o_message() function uses get_dot_command_size() to compute the byte count for memcpy_toio(), but this value is derived from user-controlled fields in the dot_command_header (command_size: u8, data_size: u16) and is never validated against the actual allocation size. A root user can write a small buffer with inflated header fields, causing memcpy_toio()
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a5e761ea605031f071c82eda067882a61dc42229cce4247af39a6da83cdbf7ad
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":"unaffected","product":"Linux","programFiles":["drivers/misc/ibmasm/lowlevel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ca1c857e2bb74a9fc0606128334f85316d57067b","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"b870f652877bfbe321bd0f4096fc37a93296f7b6","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"ce57fa439bd1b5d664f334a0c3e3f0e42abb0153","status":"affected","version":"1da177e4c3f4152…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/misc/ibmasm/lowlevel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semve…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/misc/ibmasm/lowlevel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ca1c857e2bb74a9fc0606128334f85316d57067b","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"b870f652877bfbe321bd0f4096fc37a93296f7b6","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"ce57fa439bd1b5d664f334a0c3e3f0e42abb0153","status":"affected","version":"1da177e4c3f4152…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/misc/ibmasm/lowlevel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semve…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/affected/1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/9aad71144fa3682cca3837a06c8623016790e7ec"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/9e8f6c9d4ecddda2f28baa1678340286cff3969c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/b870f652877bfbe321bd0f4096fc37a93296f7b6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/c1c2417c60dbdca5ebb00462f21ee71c2d7f7083"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/ca1c857e2bb74a9fc0606128334f85316d57067b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/ce57fa439bd1b5d664f334a0c3e3f0e42abb0153"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/fd19eb1c75047a4ed4e855f56cafd704dc3914e0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/fe31722b0194ff76bf8b461e8bf97a2081147787"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:907d2ab36f09062458991804ce0616731fa4b2ae7d1f14d302cbc7d6aad1bda8 · sha256:bef62c6c8aa35bd2… · /containers/cna/references/4

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.

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