Package "grub2-unsigned"

Name: grub2-unsigned


This package is just an umbrella for a group of other packages, it has no description.
Description samples from packages in group:

  • GRand Unified Bootloader, version 2 (EFI-AMD64 version)
  • GRand Unified Bootloader, version 2 (EFI-AMD64 modules)
  • GRand Unified Bootloader, version 2 (EFI-AMD64 debug files)

Latest version: 2.06-2ubuntu10
Release: jammy (22.04)
Level: security
Repository: main


Other versions of "grub2-unsigned" in Jammy

Repository Area Version
base main 2.06-2ubuntu7
updates main 2.06-2ubuntu10
proposed main 2.06-2ubuntu14

Packages in group

Deleted packages are displayed in grey.


Version: 2.06-2ubuntu10 2022-11-30 15:06:28 UTC

  grub2-unsigned (2.06-2ubuntu10) jammy; urgency=medium

  [ Chris Coulson ]
  * SECURITY UPDATE: Crafted PNG grayscale images may lead to out-of-bounds
    write in heap.
    - 0139-video-readers-png-Drop-greyscale-support-to-fix-heap.patch:
      video/readers/png: Drop greyscale support to fix heap out-of-bounds write
    - CVE-2021-3695
  * SECURITY UPDATE: Crafted PNG image may lead to out-of-bound write during
    huffman table handling.
    - 0140-video-readers-png-Avoid-heap-OOB-R-W-inserting-huff-.patch:
      video/readers/png: Avoid heap OOB R/W inserting huff table items
    - CVE-2021-3696
  * SECURITY UPDATE: Crafted JPEG image can lead to buffer underflow write in
    the heap.
    - 0145-video-readers-jpeg-Block-int-underflow-wild-pointer-.patch:
      video/readers/jpeg: Block int underflow -> wild pointer write
    - CVE-2021-3697
  * SECURITY UPDATE: Integer underflow in grub_net_recv_ip4_packets
    - 0148-net-ip-Do-IP-fragment-maths-safely.patch: net/ip: Do IP fragment
      maths safely
    - CVE-2022-28733
  * SECURITY UPDATE: Out-of-bounds write when handling split HTTP headers
    - 0154-net-http-Fix-OOB-write-for-split-http-headers.patch: net/http: Fix
      OOB write for split http headers
    - CVE-2022-28734
  * SECURITY UPDATE: shim_lock verifier allows non-kernel files to be loaded
    - 0135-kern-efi-sb-Reject-non-kernel-files-in-the-shim_lock.patch:
      kern/efi/sb: Reject non-kernel files in the shim_lock verifier
    - CVE-2022-28735
  * SECURITY UPDATE: use-after-free in grub_cmd_chainloader()
    - 0130-loader-efi-chainloader-simplify-the-loader-state.patch:
      loader/efi/chainloader: simplify the loader state
    - 0131-commands-boot-Add-API-to-pass-context-to-loader.patch: commands/boot:
      Add API to pass context to loader
    - 0132-loader-efi-chainloader-Use-grub_loader_set_ex.patch:
      loader/efi/chainloader: Use grub_loader_set_ex
    - 0133-loader-i386-efi-linux-Use-grub_loader_set_ex.patch:
      loader/i386/efi/linux: Use grub_loader_set_ex
  * Various fixes as a result of fuzzing and static analysis:
    - 0129-loader-efi-chainloader-grub_load_and_start_image-doe.patch:
      loader/efi/chainloader: grub_load_and_start_image doesn't load and start
    - 0134-loader-i386-efi-linux-Fix-a-memory-leak-in-the-initr.patch:
      loader/i386/efi/linux: Fix a memory leak in the initrd command
    - 0136-kern-file-Do-not-leak-device_name-on-error-in-grub_f.patch:
      kern/file: Do not leak device_name on error in grub_file_open()
    - 0137-video-readers-png-Abort-sooner-if-a-read-operation-f.patch:
      video/readers/png: Abort sooner if a read operation fails
    - 0138-video-readers-png-Refuse-to-handle-multiple-image-he.patch:
      video/readers/png: Refuse to handle multiple image headers
    - 0141-video-readers-png-Sanity-check-some-huffman-codes.patch:
      video/readers/png: Sanity check some huffman codes
    - 0142-video-readers-jpeg-Abort-sooner-if-a-read-operation-.patch:
      video/readers/jpeg: Abort sooner if a read operation fails
    - 0143-video-readers-jpeg-Do-not-reallocate-a-given-huff-ta.patch:
      video/readers/jpeg: Do not reallocate a given huff table
    - 0144-video-readers-jpeg-Refuse-to-handle-multiple-start-o.patch:
      video/readers/jpeg: Refuse to handle multiple start of streams
    - 0146-normal-charset-Fix-array-out-of-bounds-formatting-un.patch:
      normal/charset: Fix array out-of-bounds formatting unicode for display
    - 0147-net-netbuff-Block-overly-large-netbuff-allocs.patch:
      net/netbuff: Block overly large netbuff allocs
    - 0149-net-dns-Fix-double-free-addresses-on-corrupt-DNS-res.patch:
      net/dns: Fix double-free addresses on corrupt DNS response
    - 0150-net-dns-Don-t-read-past-the-end-of-the-string-we-re-.patch:
      net/dns: Don't read past the end of the string we're checking against
    - 0151-net-tftp-Prevent-a-UAF-and-double-free-from-a-failed.patch:
      net/tftp: Prevent a UAF and double-free from a failed seek
    - 0152-net-tftp-Avoid-a-trivial-UAF.patch: net/tftp: Avoid a trivial UAF
    - 0153-net-http-Do-not-tear-down-socket-if-it-s-already-bee.patch:
      net/http: Do not tear down socket if it's already been torn down
    - 0155-net-http-Error-out-on-headers-with-LF-without-CR.patch:
      net/http: Error out on headers with LF without CR
    - 0156-fs-f2fs-Do-not-read-past-the-end-of-nat-journal-entr.patch:
      fs/f2fs: Do not read past the end of nat journal entries
    - 0157-fs-f2fs-Do-not-read-past-the-end-of-nat-bitmap.patch:
      fs/f2fs: Do not read past the end of nat bitmap
    - 0158-fs-f2fs-Do-not-copy-file-names-that-are-too-long.patch:
      fs/f2fs: Do not copy file names that are too long
    - 0159-fs-btrfs-Fix-several-fuzz-issues-with-invalid-dir-it.patch:
      fs/btrfs: Fix several fuzz issues with invalid dir item sizing
    - 0160-fs-btrfs-Fix-more-ASAN-and-SEGV-issues-found-with-fu.patch:
      fs/btrfs: Fix more ASAN and SEGV issues found with fuzzing
    - 0161-fs-btrfs-Fix-more-fuzz-issues-related-to-chunks.patch:
      fs/btrfs: Fix more fuzz issues related to chunks
  * Bump SBAT generation:
    - update debian/sbat.ubuntu.csv.in
  * Make the grub2/no_efi_extra_removable setting work correctly
    - update debian/postinst.in
  * Build grub2-unsigned packages with xz compression for compatibility
    with xenial dpkg
    - update debian/rules

  [ Steve Langasek ]
  * Bump versioned dependency on grub2-common to 2.02~beta2-36ubuntu3.32 for
    necessary arm relocation support. LP: #1926748.
  * debian/postinst.in: Unconditionally call grub-install with
    --force-extra-removable on xenial and bionic, so that the \EFI\BOOT
    removable path as used in cloud images receives the updates. LP: #1930742.

 -- Chris Coulson <email address hidden> Tue, 07 Jun 2022 17:36:27 +0100

1930742 cloud images in xenial do not get their boot path updated because we don't call grub-install --force-extra-removable
CVE-2021-3695 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 co
CVE-2021-3696 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. Co
CVE-2021-3697 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

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