CVE Explorer

CVE-2026-45856

In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send ib_uverbs_post_send() uses cmd.wqe_size from userspace without any validation before passing it to kmalloc() and using the allocated buffer as struct ib_uverbs_send_wr. If a user provides a small wqe_size value (e.g., 1), kmalloc() will succeed, but subsequent accesses to user_wr->opcode, user_wr->num_sge, and other fields will read beyond the allocated buf

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d60eb35f87acc5cbcde53aded77c317753c0e7edf00f18728e20922dddbaa3c5

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/infiniband/core/uverbs_cmd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9c15ec4cd4e7f57c6bbcb4e73e99290f150dd2a7","status":"affected","version":"c3bea3d2dc5358e05541527283279102383b0231","versionType":"git"},{"lessThan":"9b5ac1c15334d46c0dbd49d64a2257b929500163","status":"affected","version":"c3bea3d2dc5358e05541527283279102383b0231","versionType":"git"},{"lessThan":"01c9b152647dc70dc06a4a2eff86ebb3b3c76075","status":"affected","version":"c3bea3d2d…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/infiniband/core/uverbs_cmd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.0"},{"lessThan":"5.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.252","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semve…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /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:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions

{"url":"https://git.kernel.org/stable/c/01c9b152647dc70dc06a4a2eff86ebb3b3c76075"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/1956f0a74ccf5dc9c3ef717f2985c3ed3400aab0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/references/7

{"url":"https://git.kernel.org/stable/c/9b5ac1c15334d46c0dbd49d64a2257b929500163"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/9c15ec4cd4e7f57c6bbcb4e73e99290f150dd2a7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/bef70ff9841990658610512b4a18e4a88c9b4df6"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/references/6

{"url":"https://git.kernel.org/stable/c/bf1feed1a7886af945f92890493aefd2b5c9928a"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/bf4454da8b1e712714628c0a0d6e7845bb40790a"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/d533425ac1f2925b4fc3e4ed9b9d72362cb23475"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1eb92fa982cac35d113aa4514c091a121d2e911c36cab2c1d75f580a3ddaf9fa · sha256:00703238ec8a0064… · /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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