ISOMAN

CVE

CVE-2019-19602

fpregs_state_valid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact because of incorrect fpu_fpregs_owner_ctx caching, as demonstrated by mishandling of signal-based non-cooperative preemption in Go 1.14 prereleases on amd64, aka CID-59c4bd853abc.

Severity
MEDIUM
CVSS
6.1
Published
Modified
NVD detailAll CVEs

Linked Releases

DistributionReleaseStatusEvidence
Ubuntu18.04.6 amd64 desktopunknownsource
Ubuntu18.04.6 amd64 live-serverunknownsource

References

  1. https://bugzilla.kernel.org/show_bug.cgi?id=205663
  2. https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2
  3. https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
  4. https://github.com/golang/go/issues/35777#issuecomment-561935388
  5. https://github.com/torvalds/linux/commit/59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
  6. https://security.netapp.com/advisory/ntap-20200103-0001/
  7. https://usn.ubuntu.com/4284-1/
  8. https://bugzilla.kernel.org/show_bug.cgi?id=205663
  9. https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2
  10. https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
  11. https://github.com/golang/go/issues/35777#issuecomment-561935388
  12. https://github.com/torvalds/linux/commit/59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
  13. https://security.netapp.com/advisory/ntap-20200103-0001/
  14. https://usn.ubuntu.com/4284-1/