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CVE-2026-31482

In the Linux kernel, the following vulnerability has been resolved: s390/entry: Scrub r12 register on kernel entry Before commit f33f2d4c7c80 ("s390/bp: remove TIF_ISOLATE_BP"), all entry handlers loaded r12 with the current task pointer (lg %r12,__LC_CURRENT) for use by the BPENTER/BPEXIT macros. That commit removed TIF_ISOLATE_BP, dropping both the branch prediction macros and the r12 load, but did not add r12 to the register clearing sequence. Add the missing xgr %r12,%r12 to make the regi
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:258b6e8fe4a68bf508fe02c937dd2c5b2cb97b29f43d97bc87b5ca7aa13c616f
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":["arch/s390/kernel/entry.S"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.80","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThan…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1b09745f6a378e65c2df9d2c4ff214e66497ea99afae14725347cb1bef88895a · sha256:026d05767234c515… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/s390/kernel/entry.S"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a58d298a83a3a9b7ca99ded9d60a1e77231159ef","status":"affected","version":"f33f2d4c7c80c641f6ca3dfe5e7dfe1f91543780","versionType":"git"},{"lessThan":"95c899cd791803a5bf7b73e5994fbbe1cc1a9c36","status":"affected","version":"f33f2d4c7c80c641f6ca3dfe5e7dfe1f91543780","versionType":"git"},{"lessThan":"7f4e3233faa8470dd0627bc49b2809f2bfebd909","status":"affected","version":"f33f2d4c7c80c641f6ca3…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1b09745f6a378e65c2df9d2c4ff214e66497ea99afae14725347cb1bef88895a · sha256:026d05767234c515… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/s390/kernel/entry.S"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.80","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThan…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1b09745f6a378e65c2df9d2c4ff214e66497ea99afae14725347cb1bef88895a · sha256:026d05767234c515… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/s390/kernel/entry.S"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a58d298a83a3a9b7ca99ded9d60a1e77231159ef","status":"affected","version":"f33f2d4c7c80c641f6ca3dfe5e7dfe1f91543780","versionType":"git"},{"lessThan":"95c899cd791803a5bf7b73e5994fbbe1cc1a9c36","status":"affected","version":"f33f2d4c7c80c641f6ca3dfe5e7dfe1f91543780","versionType":"git"},{"lessThan":"7f4e3233faa8470dd0627bc49b2809f2bfebd909","status":"affected","version":"f33f2d4c7c80c641f6ca3…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1b09745f6a378e65c2df9d2c4ff214e66497ea99afae14725347cb1bef88895a · sha256:026d05767234c515… · /containers/cna/affected/0

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/0738d395aab8fae3b5a3ad3fc640630c91693c27"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1b09745f6a378e65c2df9d2c4ff214e66497ea99afae14725347cb1bef88895a · sha256:026d05767234c515… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/7f4e3233faa8470dd0627bc49b2809f2bfebd909"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1b09745f6a378e65c2df9d2c4ff214e66497ea99afae14725347cb1bef88895a · sha256:026d05767234c515… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/95c899cd791803a5bf7b73e5994fbbe1cc1a9c36"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1b09745f6a378e65c2df9d2c4ff214e66497ea99afae14725347cb1bef88895a · sha256:026d05767234c515… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/99a8b420f3f0e162eb9c9c9253929d4d23f9bd30"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1b09745f6a378e65c2df9d2c4ff214e66497ea99afae14725347cb1bef88895a · sha256:026d05767234c515… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/a58d298a83a3a9b7ca99ded9d60a1e77231159ef"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1b09745f6a378e65c2df9d2c4ff214e66497ea99afae14725347cb1bef88895a · sha256:026d05767234c515… · /containers/cna/references/0

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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