Security update for grub2 SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2022:2073-1 Final 1 1 2022-06-14T09:59:27Z current 2022-06-14T09:59:27Z 2022-06-14T09:59:27Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for grub2 This update for grub2 fixes the following issues: Security fixes and hardenings for boothole 3 / boothole 2022 (bsc#1198581) - CVE-2021-3695: Fixed that a crafted PNG grayscale image could lead to out-of-bounds write in heap (bsc#1191184) - CVE-2021-3696: Fixed that a crafted PNG image could lead to out-of-bound write during huffman table handling (bsc#1191185) - CVE-2021-3697: Fixed that a crafted JPEG image could lead to buffer underflow write in the heap (bsc#1191186) - CVE-2022-28733: Fixed fragmentation math in net/ip (bsc#1198460) - CVE-2022-28734: Fixed an out-of-bound write for split http headers (bsc#1198493) - CVE-2022-28735: Fixed some verifier framework changes (bsc#1198495) - CVE-2022-28736: Fixed a use-after-free in chainloader command (bsc#1198496) - Update SBAT security contact (bsc#1193282) - Bump grub's SBAT generation to 2 Other bugs fixed: - Use boot disks in OpenFirmware, fixing regression caused when the root LV is completely in the boot LUN (bsc#1197948) - Fix grub-install error when efi system partition is created as mdadm software raid1 device (bsc#1179981) (bsc#1195204) - Fix error in grub-install when linux root device is on lvm thin volume (bsc#1192622) (bsc#1191974) - Fix wrong default entry when booting snapshot (bsc#1159205) - Add support for simplefb (boo#1193532). - Fix error lvmid disk cannot be found after second disk added to the root volume group (bsc#1189874) (bsc#1071559) - Fix error /boot/grub2/locale/POSIX.gmo not found (bsc#1189769) - Fix unknown TPM error on buggy uefi firmware (bsc#1191504) - Fix arm64 kernel image not aligned on 64k boundary (bsc#1192522) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Image SLES15-SP3-Micro-5-1-BYOS-Azure-2022-2073,Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM-2022-2073,Image SLES15-SP3-Micro-5-1-BYOS-GCE-2022-2073,SUSE-2022-2073,SUSE-SUSE-MicroOS-5.1-2022-2073 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2022/suse-su-20222073-1/ Link for SUSE-SU-2022:2073-1 https://lists.suse.com/pipermail/sle-security-updates/2022-June/011280.html E-Mail link for SUSE-SU-2022:2073-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1071559 SUSE Bug 1071559 https://bugzilla.suse.com/1159205 SUSE Bug 1159205 https://bugzilla.suse.com/1179981 SUSE Bug 1179981 https://bugzilla.suse.com/1189769 SUSE Bug 1189769 https://bugzilla.suse.com/1189874 SUSE Bug 1189874 https://bugzilla.suse.com/1191184 SUSE Bug 1191184 https://bugzilla.suse.com/1191185 SUSE Bug 1191185 https://bugzilla.suse.com/1191186 SUSE Bug 1191186 https://bugzilla.suse.com/1191504 SUSE Bug 1191504 https://bugzilla.suse.com/1191974 SUSE Bug 1191974 https://bugzilla.suse.com/1192522 SUSE Bug 1192522 https://bugzilla.suse.com/1192622 SUSE Bug 1192622 https://bugzilla.suse.com/1193282 SUSE Bug 1193282 https://bugzilla.suse.com/1193532 SUSE Bug 1193532 https://bugzilla.suse.com/1195204 SUSE Bug 1195204 https://bugzilla.suse.com/1197948 SUSE Bug 1197948 https://bugzilla.suse.com/1198460 SUSE Bug 1198460 https://bugzilla.suse.com/1198493 SUSE Bug 1198493 https://bugzilla.suse.com/1198495 SUSE Bug 1198495 https://bugzilla.suse.com/1198496 SUSE Bug 1198496 https://bugzilla.suse.com/1198581 SUSE Bug 1198581 https://www.suse.com/security/cve/CVE-2021-3695/ SUSE CVE CVE-2021-3695 page https://www.suse.com/security/cve/CVE-2021-3696/ SUSE CVE CVE-2021-3696 page https://www.suse.com/security/cve/CVE-2021-3697/ SUSE CVE CVE-2021-3697 page https://www.suse.com/security/cve/CVE-2022-28733/ SUSE CVE CVE-2022-28733 page https://www.suse.com/security/cve/CVE-2022-28734/ SUSE CVE CVE-2022-28734 page https://www.suse.com/security/cve/CVE-2022-28735/ SUSE CVE CVE-2022-28735 page https://www.suse.com/security/cve/CVE-2022-28736/ SUSE CVE CVE-2022-28736 page Image SLES15-SP3-Micro-5-1-BYOS-Azure Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM Image SLES15-SP3-Micro-5-1-BYOS-GCE SUSE Linux Enterprise Micro 5.1 grub2-2.04-150300.3.5.1 grub2-i386-pc-2.04-150300.3.5.1 grub2-x86_64-efi-2.04-150300.3.5.1 grub2-x86_64-xen-2.04-150300.3.5.1 grub2-arm64-efi-2.04-150300.3.5.1 grub2-arm64-efi-debug-2.04-150300.3.5.1 grub2-branding-upstream-2.04-150300.3.5.1 grub2-i386-pc-debug-2.04-150300.3.5.1 grub2-powerpc-ieee1275-2.04-150300.3.5.1 grub2-powerpc-ieee1275-debug-2.04-150300.3.5.1 grub2-s390x-emu-2.04-150300.3.5.1 grub2-s390x-emu-debug-2.04-150300.3.5.1 grub2-snapper-plugin-2.04-150300.3.5.1 grub2-systemd-sleep-plugin-2.04-150300.3.5.1 grub2-x86_64-efi-debug-2.04-150300.3.5.1 grub2-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-Azure grub2-i386-pc-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-Azure grub2-x86_64-efi-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-Azure grub2-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM grub2-i386-pc-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM grub2-x86_64-efi-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM grub2-x86_64-xen-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM grub2-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-GCE grub2-i386-pc-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-GCE grub2-x86_64-efi-2.04-150300.3.5.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-GCE grub2-2.04-150300.3.5.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-arm64-efi-2.04-150300.3.5.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-i386-pc-2.04-150300.3.5.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-s390x-emu-2.04-150300.3.5.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-snapper-plugin-2.04-150300.3.5.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-x86_64-efi-2.04-150300.3.5.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-x86_64-xen-2.04-150300.3.5.1 as a component of SUSE Linux Enterprise Micro 5.1 A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12. CVE-2021-3695 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-xen-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-arm64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-i386-pc-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-s390x-emu-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-snapper-plugin-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-xen-2.04-150300.3.5.1 important 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2022/suse-su-20222073-1/ https://www.suse.com/security/cve/CVE-2021-3695.html CVE-2021-3695 https://bugzilla.suse.com/1191184 SUSE Bug 1191184 https://bugzilla.suse.com/1203445 SUSE Bug 1203445 https://bugzilla.suse.com/1205057 SUSE Bug 1205057 https://bugzilla.suse.com/1227915 SUSE Bug 1227915 A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12. CVE-2021-3696 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-xen-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-arm64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-i386-pc-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-s390x-emu-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-snapper-plugin-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-xen-2.04-150300.3.5.1 moderate 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2022/suse-su-20222073-1/ https://www.suse.com/security/cve/CVE-2021-3696.html CVE-2021-3696 https://bugzilla.suse.com/1191185 SUSE Bug 1191185 A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12. CVE-2021-3697 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-xen-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-arm64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-i386-pc-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-s390x-emu-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-snapper-plugin-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-xen-2.04-150300.3.5.1 important 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2022/suse-su-20222073-1/ https://www.suse.com/security/cve/CVE-2021-3697.html CVE-2021-3697 https://bugzilla.suse.com/1191186 SUSE Bug 1191186 https://bugzilla.suse.com/1203445 SUSE Bug 1203445 https://bugzilla.suse.com/1205057 SUSE Bug 1205057 Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer. CVE-2022-28733 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-xen-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-arm64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-i386-pc-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-s390x-emu-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-snapper-plugin-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-xen-2.04-150300.3.5.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2022/suse-su-20222073-1/ https://www.suse.com/security/cve/CVE-2022-28733.html CVE-2022-28733 https://bugzilla.suse.com/1198460 SUSE Bug 1198460 https://bugzilla.suse.com/1203445 SUSE Bug 1203445 https://bugzilla.suse.com/1205057 SUSE Bug 1205057 https://bugzilla.suse.com/1227915 SUSE Bug 1227915 Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata. CVE-2022-28734 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-xen-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-arm64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-i386-pc-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-s390x-emu-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-snapper-plugin-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-xen-2.04-150300.3.5.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2022/suse-su-20222073-1/ https://www.suse.com/security/cve/CVE-2022-28734.html CVE-2022-28734 https://bugzilla.suse.com/1198493 SUSE Bug 1198493 https://bugzilla.suse.com/1203445 SUSE Bug 1203445 The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain. CVE-2022-28735 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-xen-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-arm64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-i386-pc-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-s390x-emu-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-snapper-plugin-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-xen-2.04-150300.3.5.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2022/suse-su-20222073-1/ https://www.suse.com/security/cve/CVE-2022-28735.html CVE-2022-28735 https://bugzilla.suse.com/1198495 SUSE Bug 1198495 There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved. CVE-2022-28736 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-efi-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-xen-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-i386-pc-2.04-150300.3.5.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-arm64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-i386-pc-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-s390x-emu-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-snapper-plugin-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-efi-2.04-150300.3.5.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-xen-2.04-150300.3.5.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2022/suse-su-20222073-1/ https://www.suse.com/security/cve/CVE-2022-28736.html CVE-2022-28736 https://bugzilla.suse.com/1198496 SUSE Bug 1198496 https://bugzilla.suse.com/1203445 SUSE Bug 1203445 https://bugzilla.suse.com/1205057 SUSE Bug 1205057