Security update for grub2 (important)

An update that solves 7 vulnerabilities and has three fixes
is now available.

Description:

This update for grub2 fixes the following issues:

This update provides 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

• Use boot disks in OpenFirmware, fixing regression caused when the root
  LV is completely in the boot LUN (bsc#1197948)

Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation methods
like YaST online_update or “zypper patch”.

Alternatively you can run the command listed for your product:

• openSUSE Leap 15.4:

  zypper in -t patch openSUSE-SLE-15.4-2022-2035=1

• SUSE Linux Enterprise Module for Server Applications 15-SP4:

  zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP4-2022-2035=1

• SUSE Linux Enterprise Module for SUSE Manager Proxy 4.3:

  zypper in -t patch SUSE-SLE-Module-SUSE-Manager-Proxy-4.3-2022-2035=1

• SUSE Linux Enterprise Module for Basesystem 15-SP4:

  zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP4-2022-2035=1