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CVE-2026-23005

In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1 When loading guest XSAVE state via KVM_SET_XSAVE, and when updating XFD in response to a guest WRMSR, clear XFD-disabled features in the saved (or to be restored) XSTATE_BV to ensure KVM doesn't attempt to load state for features that are disabled via the guest's XFD. Because the kernel executes XRSTOR with the guest's XFD, saving XSTATE_BV[i]=1 with XFD[i]=1
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6a9e278156676a2416e026313b5abe407f15e7aa61ca787f1697d9979d96b0b3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 7 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kernel/fpu/core.c","arch/x86/kvm/x86.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b5995c01ba53d84182ecb9492fc4d91cfe8a362d","status":"affected","version":"820a6ee944e74e57255ac2e90916ecdaade57b95","versionType":"git"},{"lessThan":"1e2848bda819af569dfe7ab186223855e092a2cb","status":"affected","version":"820a6ee944e74e57255ac2e90916ecdaade57b95","versionType":"git"},{"lessThan":"f577508cc8a0adb8b4ebe9480bba7683b6149930","status":"affected","version"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/cna/affected/0

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/0

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/2

{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/4

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/3

{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kernel/fpu/core.c","arch/x86/kvm/x86.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.17"},{"lessThan":"5.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.162","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.122","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.67","versionTy…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/cna/affected/1

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/1

Affected products and versions

7 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kernel/fpu/core.c","arch/x86/kvm/x86.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b5995c01ba53d84182ecb9492fc4d91cfe8a362d","status":"affected","version":"820a6ee944e74e57255ac2e90916ecdaade57b95","versionType":"git"},{"lessThan":"1e2848bda819af569dfe7ab186223855e092a2cb","status":"affected","version":"820a6ee944e74e57255ac2e90916ecdaade57b95","versionType":"git"},{"lessThan":"f577508cc8a0adb8b4ebe9480bba7683b6149930","status":"affected","version"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/cna/affected/0
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/0
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/2
{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/4
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/3
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kernel/fpu/core.c","arch/x86/kvm/x86.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.17"},{"lessThan":"5.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.162","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.122","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.67","versionTy…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/cna/affected/1
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/affected/1

Source references

6 source assertions
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/adp/1/references/0
{"url":"https://git.kernel.org/stable/c/1e2848bda819af569dfe7ab186223855e092a2cb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/b45f721775947a84996deb5c661602254ce25ce6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/b5995c01ba53d84182ecb9492fc4d91cfe8a362d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/eea6f395ca502c4528314c8112da9b5d65f685eb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/f577508cc8a0adb8b4ebe9480bba7683b6149930"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:701674142cb73ad23936fa25738b8369b451b19350086a1763aec206b4452c7e · sha256:da60251dbcf74136… · /containers/cna/references/2

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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