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CVE-2026-31774

In the Linux kernel, the following vulnerability has been resolved: io_uring/net: fix slab-out-of-bounds read in io_bundle_nbufs() sqe->len is __u32 but gets stored into sr->len which is int. When userspace passes sqe->len values exceeding INT_MAX (e.g. 0xFFFFFFFF), sr->len overflows to a negative value. This negative value propagates through the bundle recv/send path: 1. io_recv(): sel.val = sr->len (ssize_t gets -1) 2. io_recv_buf_select(): arg.max_len = sel->val (size_t gets 0xFFF
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e02fec4bdf01056cbd854597bc5aa0ce85b435196a6c421902fdd851360aebaa
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":["io_uring/net.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.81","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.22","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.12","versionType":"semver"},{"lessThanOrEqual…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0289daa3ab86f093a006a7c2606a2ac6efc1dfdca7205d518264919d241c0fc2 · sha256:8b1ef62887031fbc… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["io_uring/net.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"90ced24c500ad4e129e9e34b7e56fd7849e350b6","status":"affected","version":"a05d1f625c7aa681d8816bc0f10089289ad07aad","versionType":"git"},{"lessThan":"c314b405dcc4d8b9041124f928f81715d6328bec","status":"affected","version":"a05d1f625c7aa681d8816bc0f10089289ad07aad","versionType":"git"},{"lessThan":"1b655cd311344117d3052f6552cb20d9901c9d7c","status":"affected","version":"a05d1f625c7aa681d8816bc0f100892…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0289daa3ab86f093a006a7c2606a2ac6efc1dfdca7205d518264919d241c0fc2 · sha256:8b1ef62887031fbc… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["io_uring/net.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.81","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.22","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.12","versionType":"semver"},{"lessThanOrEqual…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0289daa3ab86f093a006a7c2606a2ac6efc1dfdca7205d518264919d241c0fc2 · sha256:8b1ef62887031fbc… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["io_uring/net.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"90ced24c500ad4e129e9e34b7e56fd7849e350b6","status":"affected","version":"a05d1f625c7aa681d8816bc0f10089289ad07aad","versionType":"git"},{"lessThan":"c314b405dcc4d8b9041124f928f81715d6328bec","status":"affected","version":"a05d1f625c7aa681d8816bc0f10089289ad07aad","versionType":"git"},{"lessThan":"1b655cd311344117d3052f6552cb20d9901c9d7c","status":"affected","version":"a05d1f625c7aa681d8816bc0f100892…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0289daa3ab86f093a006a7c2606a2ac6efc1dfdca7205d518264919d241c0fc2 · sha256:8b1ef62887031fbc… · /containers/cna/affected/0

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:v2:0289daa3ab86f093a006a7c2606a2ac6efc1dfdca7205d518264919d241c0fc2 · sha256:8b1ef62887031fbc… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/1b655cd311344117d3052f6552cb20d9901c9d7c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0289daa3ab86f093a006a7c2606a2ac6efc1dfdca7205d518264919d241c0fc2 · sha256:8b1ef62887031fbc… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/90ced24c500ad4e129e9e34b7e56fd7849e350b6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0289daa3ab86f093a006a7c2606a2ac6efc1dfdca7205d518264919d241c0fc2 · sha256:8b1ef62887031fbc… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/b948f9d5d3057b01188e36664e7c7604d1c8ecb5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0289daa3ab86f093a006a7c2606a2ac6efc1dfdca7205d518264919d241c0fc2 · sha256:8b1ef62887031fbc… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/c314b405dcc4d8b9041124f928f81715d6328bec"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0289daa3ab86f093a006a7c2606a2ac6efc1dfdca7205d518264919d241c0fc2 · sha256:8b1ef62887031fbc… · /containers/cna/references/1

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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