Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-43073

In the Linux kernel, the following vulnerability has been resolved: x86-64: rename misleadingly named '__copy_user_nocache()' function This function was a masterclass in bad naming, for various historical reasons. It claimed to be a non-cached user copy. It is literally _neither_ of those things. It's a specialty memory copy routine that uses non-temporal stores for the destination (but not the source), and that does exception handling for both source and destination accesses. Also note th
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:133bc8b71f98e138116d15deb287b4995063849bb541aaa80293ae6355b2c468
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":["arch/x86/include/asm/uaccess_64.h","arch/x86/lib/copy_user_uncached_64.S","arch/x86/lib/usercopy_64.c","drivers/infiniband/sw/rdmavt/qp.c","drivers/ntb/ntb_transport.c","tools/objtool/check.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"14b9194db4a28421a4dbe5d6e519efbaa7c5f3cd","status":"affected","version":"06917f753547e6bba8a5d17f79971d1c071a70dd","versionType":"git"},{"lessThan":"c6d4e0599e7e73abc04e2488dfeb7940c4039660","status":"affected","version":"069…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/include/asm/uaccess_64.h","arch/x86/lib/copy_user_uncached_64.S","arch/x86/lib/usercopy_64.c","drivers/infiniband/sw/rdmavt/qp.c","drivers/ntb/ntb_transport.c","tools/objtool/check.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.2"},{"lessThan":"4.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.83","versionType":"semver"},{"lessThanOrEqual":"6.18.*","s…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/include/asm/uaccess_64.h","arch/x86/lib/copy_user_uncached_64.S","arch/x86/lib/usercopy_64.c","drivers/infiniband/sw/rdmavt/qp.c","drivers/ntb/ntb_transport.c","tools/objtool/check.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"14b9194db4a28421a4dbe5d6e519efbaa7c5f3cd","status":"affected","version":"06917f753547e6bba8a5d17f79971d1c071a70dd","versionType":"git"},{"lessThan":"c6d4e0599e7e73abc04e2488dfeb7940c4039660","status":"affected","version":"069…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/include/asm/uaccess_64.h","arch/x86/lib/copy_user_uncached_64.S","arch/x86/lib/usercopy_64.c","drivers/infiniband/sw/rdmavt/qp.c","drivers/ntb/ntb_transport.c","tools/objtool/check.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.2"},{"lessThan":"4.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.83","versionType":"semver"},{"lessThanOrEqual":"6.18.*","s…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/affected/1

Source references

6 source assertions
{"url":"https://git.kernel.org/stable/c/14b9194db4a28421a4dbe5d6e519efbaa7c5f3cd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/c6d4e0599e7e73abc04e2488dfeb7940c4039660"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/d187a86de793f84766ea40b9ade7ac60aabbb4fe"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/d993e1723aa2a085aa0d72e70ea889031fc225b4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/efea91ad1729ff1853d7418e4d3bc27d085e72d0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/references/3
{"url":"https://project-zero.issues.chromium.org/issues/496923375"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d98cd0ba58757bd91d0449415ae8696bc3fd02d8b38da3b6999cae1695e65724 · sha256:49525536110b8b65… · /containers/cna/references/5

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.

← Back to CVE Explorer