CVE Explorer

CVE-2026-43427

In the Linux kernel, the following vulnerability has been resolved: usb: class: cdc-wdm: fix reordering issue in read code path Quoting the bug report: Due to compiler optimization or CPU out-of-order execution, the desc->length update can be reordered before the memmove. If this happens, wdm_read() can see the new length and call copy_to_user() on uninitialized memory. This also violates LKMM data race rules [1]. Fix it by using WRITE_ONCE and memory barriers.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1a0cd4c59908b7654f9538939e8bdaafde6dae489ec1124394dda8985be11268

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/usb/class/cdc-wdm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"638328ca9c17ae6511ad62198c57bae32ffa3c91","status":"affected","version":"afba937e540c902c989cd516fd97ea0c8499bb27","versionType":"git"},{"lessThan":"170e8daca24da6edb4be82ab01abf44e87af387b","status":"affected","version":"afba937e540c902c989cd516fd97ea0c8499bb27","versionType":"git"},{"lessThan":"c8fa96ed021923dae147bcd9f9205b8df7b82360","status":"affected","version":"afba937e540c902c98…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/class/cdc-wdm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.26"},{"lessThan":"2.6.26","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"}…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/affected/1

Source references

8 source assertions

{"url":"https://git.kernel.org/stable/c/170e8daca24da6edb4be82ab01abf44e87af387b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/276aef0fd2b92f41b920ac891c72cadeee957934"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/4ee3062bf2c9a722afef429826e8607eaf3fc6a0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/638328ca9c17ae6511ad62198c57bae32ffa3c91"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/67ed312124bb1b61858778ac0b985b48961c862a"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/8df672bfe3ec2268c2636584202755898e547173"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/references/7

{"url":"https://git.kernel.org/stable/c/c8fa96ed021923dae147bcd9f9205b8df7b82360"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/e3c874b05901dc519054b5107d16620e6d2b5fea"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:52df212b6ff9ab620a9efac5eb6842c9c957002bd24405413c36feff4dfbbab1 · sha256:39c8c754b0123582… · /containers/cna/references/6

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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