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CVE-2026-64082

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compat_riscv_gpr_set() calls cregs_to_regs() unconditionally, even when user_regset_copyin() fails. Since cregs is an uninitialized stack variable, a copyin failure causes uninitialized stack data to be written into the target task's pt_regs, corrupting its register state and potentially leaking kernel stack contents. compat_restore_sigcontext() has the same iss
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f59c5352f3c07e731f9e4c18435e01625875a4ddceca7252c019a12cc1d698c9
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/riscv/kernel/compat_signal.c","arch/riscv/kernel/ptrace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.19"},{"lessThan":"5.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6c404871307f71ebf98951f83ee82f96fb3bd8c488ac523665765a87557b5796 · sha256:4ec952dc6f72ba28… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/riscv/kernel/compat_signal.c","arch/riscv/kernel/ptrace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9e020156833f1ad0d425a1e3d85b65639f1c1c50","status":"affected","version":"7383ee05314be58f8f9f018ee0ac53bef3808aea","versionType":"git"},{"lessThan":"6ebcbb53fc9bc30843054ed99fd60b8e542628f4","status":"affected","version":"7383ee05314be58f8f9f018ee0ac53bef3808aea","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6c404871307f71ebf98951f83ee82f96fb3bd8c488ac523665765a87557b5796 · sha256:4ec952dc6f72ba28… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/riscv/kernel/compat_signal.c","arch/riscv/kernel/ptrace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.19"},{"lessThan":"5.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6c404871307f71ebf98951f83ee82f96fb3bd8c488ac523665765a87557b5796 · sha256:4ec952dc6f72ba28… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/riscv/kernel/compat_signal.c","arch/riscv/kernel/ptrace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9e020156833f1ad0d425a1e3d85b65639f1c1c50","status":"affected","version":"7383ee05314be58f8f9f018ee0ac53bef3808aea","versionType":"git"},{"lessThan":"6ebcbb53fc9bc30843054ed99fd60b8e542628f4","status":"affected","version":"7383ee05314be58f8f9f018ee0ac53bef3808aea","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6c404871307f71ebf98951f83ee82f96fb3bd8c488ac523665765a87557b5796 · sha256:4ec952dc6f72ba28… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6c404871307f71ebf98951f83ee82f96fb3bd8c488ac523665765a87557b5796 · sha256:4ec952dc6f72ba28… · /containers/cna/metrics/0/cvssV3_1

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/6ebcbb53fc9bc30843054ed99fd60b8e542628f4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6c404871307f71ebf98951f83ee82f96fb3bd8c488ac523665765a87557b5796 · sha256:4ec952dc6f72ba28… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/9e020156833f1ad0d425a1e3d85b65639f1c1c50"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6c404871307f71ebf98951f83ee82f96fb3bd8c488ac523665765a87557b5796 · sha256:4ec952dc6f72ba28… · /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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