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CVE-2026-31484

In the Linux kernel, the following vulnerability has been resolved: io_uring/fdinfo: fix OOB read in SQE_MIXED wrap check __io_uring_show_fdinfo() iterates over pending SQEs and, for 128-byte SQEs on an IORING_SETUP_SQE_MIXED ring, needs to detect when the second half of the SQE would be past the end of the sq_sqes array. The current check tests (++sq_head & sq_mask) == 0, but sq_head is only incremented when a 128-byte SQE is encountered, not on every iteration. The actual array index is sq_i
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:45bdc30e205d7b03c1a4fddcb686ff48bae7988d785f8d08c27ed56ce0a2b83f
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":["io_uring/fdinfo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ba21ab247a5be5382da7464b95afbe5f0e9aa503","status":"affected","version":"1cba30bf9fdd6c982708f3587f609a30c370d889","versionType":"git"},{"lessThan":"5170efd9c344c68a8075dcb8ed38d3f8a60e7ed4","status":"affected","version":"1cba30bf9fdd6c982708f3587f609a30c370d889","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5f28566415ce780b7c5d453c8887e3cf3d42e440ec7a3cd6a0742cd01ea2cdd9 · sha256:1c9c2324ec258dbe… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["io_uring/fdinfo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5f28566415ce780b7c5d453c8887e3cf3d42e440ec7a3cd6a0742cd01ea2cdd9 · sha256:1c9c2324ec258dbe… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["io_uring/fdinfo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ba21ab247a5be5382da7464b95afbe5f0e9aa503","status":"affected","version":"1cba30bf9fdd6c982708f3587f609a30c370d889","versionType":"git"},{"lessThan":"5170efd9c344c68a8075dcb8ed38d3f8a60e7ed4","status":"affected","version":"1cba30bf9fdd6c982708f3587f609a30c370d889","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5f28566415ce780b7c5d453c8887e3cf3d42e440ec7a3cd6a0742cd01ea2cdd9 · sha256:1c9c2324ec258dbe… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["io_uring/fdinfo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5f28566415ce780b7c5d453c8887e3cf3d42e440ec7a3cd6a0742cd01ea2cdd9 · sha256:1c9c2324ec258dbe… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5f28566415ce780b7c5d453c8887e3cf3d42e440ec7a3cd6a0742cd01ea2cdd9 · sha256:1c9c2324ec258dbe… · /containers/cna/metrics/0/cvssV3_1

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/5170efd9c344c68a8075dcb8ed38d3f8a60e7ed4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5f28566415ce780b7c5d453c8887e3cf3d42e440ec7a3cd6a0742cd01ea2cdd9 · sha256:1c9c2324ec258dbe… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/ba21ab247a5be5382da7464b95afbe5f0e9aa503"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5f28566415ce780b7c5d453c8887e3cf3d42e440ec7a3cd6a0742cd01ea2cdd9 · sha256:1c9c2324ec258dbe… · /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.

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