CVE-2018-11236
glibc: Integer overflow in stdlib/canonicalize.c on 32-bit architectures leading to stack-based buffer overflow
Severity by source
Trivy's own label is CRITICAL. Rated critical by NVD, Photon OS. Rated lower by Red Hat (medium), Amazon (medium), Oracle (medium), Ubuntu (medium).
Description
stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 1.0 | glibc | 2.22-21.ph1 |
| Photon OS 2.0 | glibc | 2.26-13.ph2 |
| amazon linux 1 | glibc, glibc-common, glibc-debuginfo and 6 more | 2.17-260.175.amzn1 |
| amazon linux 2 | glibc, glibc-all-langpacks, glibc-benchtests and 198 more | 2.26-28.amzn2.0.1 |
| debian 11 | glibc | 2.27-4 |
| debian 12 | glibc | 2.27-4 |
| debian 13 | glibc | 2.27-4 |
| debian 14 | glibc | 2.27-4 |
| debian 9 | glibc | 2.24-11+deb9u4 |
| echo | glibc | 2.27-4 |
| Oracle Linux 7 | glibc, glibc-common, glibc-devel and 4 more | 2.17-260.0.9.el7 |
| Red Hat | glibc, glibc-common, glibc-devel and 4 more | no fix listed |
Show all 244 entries from 22 sources
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 1.0 | glibc | 2.22-21.ph1 |
| Photon OS 2.0 | glibc | 2.26-13.ph2 |
| amazon linux 1 | glibc | 2.17-260.175.amzn1 |
| amazon linux 1 | glibc-common | 2.17-260.175.amzn1 |
| amazon linux 1 | glibc-debuginfo | 2.17-260.175.amzn1 |
| amazon linux 1 | glibc-debuginfo-common | 2.17-260.175.amzn1 |
| amazon linux 1 | glibc-devel | 2.17-260.175.amzn1 |
| amazon linux 1 | glibc-headers | 2.17-260.175.amzn1 |
| amazon linux 1 | glibc-static | 2.17-260.175.amzn1 |
| amazon linux 1 | glibc-utils | 2.17-260.175.amzn1 |
| amazon linux 1 | nscd | 2.17-260.175.amzn1 |
| amazon linux 2 | glibc | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-all-langpacks | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-benchtests | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-common | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-debuginfo | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-debuginfo-common | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-devel | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-headers | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-aa | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-af | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ak | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-am | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-an | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-anp | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ar | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-as | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ast | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ayc | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-az | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-be | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-bem | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ber | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-bg | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-bhb | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-bho | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-bn | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-bo | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-br | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-brx | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-bs | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-byn | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ca | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ce | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-chr | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-cmn | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-crh | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-cs | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-csb | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-cv | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-cy | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-da | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-de | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-doi | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-dv | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-dz | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-el | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-en | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-eo | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-es | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-et | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-eu | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-fa | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ff | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-fi | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-fil | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-fo | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-fr | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-fur | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-fy | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ga | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-gd | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-gez | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-gl | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-gu | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-gv | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ha | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-hak | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-he | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-hi | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-hne | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-hr | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-hsb | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ht | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-hu | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-hy | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ia | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-id | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ig | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ik | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-is | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-it | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-iu | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ja | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ka | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-kk | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-kl | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-km | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-kn | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ko | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-kok | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ks | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ku | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-kw | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ky | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-lb | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-lg | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-li | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-lij | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ln | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-lo | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-lt | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-lv | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-lzh | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mag | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mai | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mg | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mhr | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mi | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mk | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ml | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mn | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mni | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mr | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ms | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-mt | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-my | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-nan | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-nb | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-nds | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ne | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-nhn | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-niu | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-nl | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-nn | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-nr | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-nso | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-oc | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-om | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-or | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-os | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-pa | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-pap | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-pl | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ps | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-pt | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-quz | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-raj | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ro | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ru | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-rw | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sa | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sat | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sc | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sd | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-se | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sgs | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-shs | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-si | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sid | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sk | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sl | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-so | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sq | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sr | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ss | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-st | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sv | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-sw | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-szl | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ta | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-tcy | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-te | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-tg | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-th | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-the | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ti | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-tig | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-tk | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-tl | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-tn | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-tr | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ts | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-tt | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ug | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-uk | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-unm | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ur | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-uz | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-ve | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-vi | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-wa | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-wae | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-wal | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-wo | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-xh | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-yi | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-yo | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-yue | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-zh | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-langpack-zu | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-locale-source | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-minimal-langpack | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-nss-devel | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-static | 2.26-28.amzn2.0.1 |
| amazon linux 2 | glibc-utils | 2.26-28.amzn2.0.1 |
| amazon linux 2 | libcrypt | 2.26-28.amzn2.0.1 |
| amazon linux 2 | libcrypt-nss | 2.26-28.amzn2.0.1 |
| amazon linux 2 | nscd | 2.26-28.amzn2.0.1 |
| amazon linux 2 | nss_db | 2.26-28.amzn2.0.1 |
| amazon linux 2 | nss_hesiod | 2.26-28.amzn2.0.1 |
| amazon linux 2 | nss_nis | 2.26-28.amzn2.0.1 |
| debian 11 | glibc | 2.27-4 |
| debian 12 | glibc | 2.27-4 |
| debian 13 | glibc | 2.27-4 |
| debian 14 | glibc | 2.27-4 |
| debian 9 | glibc | 2.24-11+deb9u4 |
| echo | glibc | 2.27-4 |
| Oracle Linux 7 | glibc | 2.17-260.0.9.el7 |
| Oracle Linux 7 | glibc-common | 2.17-260.0.9.el7 |
| Oracle Linux 7 | glibc-devel | 2.17-260.0.9.el7 |
| Oracle Linux 7 | glibc-headers | 2.17-260.0.9.el7 |
| Oracle Linux 7 | glibc-static | 2.17-260.0.9.el7 |
| Oracle Linux 7 | glibc-utils | 2.17-260.0.9.el7 |
| Oracle Linux 7 | nscd | 2.17-260.0.9.el7 |
| Red Hat | glibc | no fix listed |
| Red Hat | glibc-common | no fix listed |
| Red Hat | glibc-devel | no fix listed |
| Red Hat | glibc-headers | no fix listed |
| Red Hat | glibc-static | no fix listed |
| Red Hat | glibc-utils | no fix listed |
| Red Hat | nscd | no fix listed |
| root.io debian 11 | rootio-glibc | 2.27-4 |
| root.io debian 12 | rootio-glibc | 2.27-4 |
| root.io debian 13 | rootio-glibc | 2.27-4 |
| seal Red Hat 8 | glibc | 2.28-164.0.5.el8_5.3+sp999, 2.28-251.el8_10.11+sp999, 2.28-251.el8_10.14+sp999 |
| seal Red Hat 8 | seal-glibc | 2.28-164.0.5.el8_5.3+sp999, 2.28-251.el8_10.11+sp999, 2.28-251.el8_10.14+sp999 |
| seal Red Hat 9 | glibc | 2.34-125.el9_5.1+sp999 |
| seal Red Hat 9 | seal-glibc | 2.34-125.el9_5.1+sp999 |
| ubuntu 14.04-ESM | eglibc | 2.19-0ubuntu6.15+esm3 |
| ubuntu 16.04 | glibc | 2.23-0ubuntu11.2 |
| ubuntu 16.04-ESM | glibc | 2.23-0ubuntu11.2 |
| ubuntu 18.04 | glibc | 2.27-3ubuntu1.2 |
| ubuntu 18.04-ESM | glibc | 2.27-3ubuntu1.2 |
References
- http://www.securityfocus.com/bid/104255
- https://access.redhat.com/errata/RHBA-2019:0327
- https://access.redhat.com/errata/RHSA-2018:3092
- https://access.redhat.com/security/cve/CVE-2018-11236
- https://linux.oracle.com/cve/CVE-2018-11236.html
- https://linux.oracle.com/errata/ELSA-2018-3092.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-11236
- https://security.netapp.com/advisory/ntap-20190329-0001/
All 16 references
- https://security.netapp.com/advisory/ntap-20190401-0001/
- https://sourceware.org/bugzilla/show_bug.cgi?id=22786
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=5460617d1567657621107d895ee2dd83bc1f88f2
- https://ubuntu.com/security/notices/USN-4416-1
- https://ubuntu.com/security/notices/USN-6762-1
- https://usn.ubuntu.com/4416-1/
- https://www.cve.org/CVERecord?id=CVE-2018-11236
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html