[ubuntu/jammy-updates] vim 2:8.2.3995-1ubuntu2.26 (Accepted)

[Ubuntu Archive Robot]

vim (2:8.2.3995-1ubuntu2.26) jammy-security; urgency=medium

  * SECURITY UPDATE: Buffer Overflow
    - debian/patches/CVE-2026-26269.patch: Limit writing to max KEYBUFLEN
      bytes to prevent writing out of bounds.
    - debian/patches/CVE-2026-28420.patch: Use VTERM_MAX_CHARS_PER_CELL * 4
      for ga_grow() to ensure sufficient space. Add a boundary check to the
      character loop to prevent index out-of-bounds access.
    - debian/patches/CVE-2026-28422.patch: Update the size check to account
      for the byte length of the fill character (using MB_CHAR2LEN).
    - debian/patches/CVE-2026-25749.patch: Limit strncpy to the length
      of the buffer (MAXPATHL)
    - CVE-2026-26269
    - CVE-2026-28420
    - CVE-2026-28422
    - CVE-2026-25749
  * SECURITY UPDATE: Command Injection
    - debian/patches/CVE-2026-28417.patch: Implement stricter RFC1123
      hostname and IP validation. Use shellescape() for the provided
      hostname and port.
    - CVE-2026-28417
  * SECURITY UPDATE: Out of Bounds Read
    - debian/patches/CVE-2026-28418.patch: Check for end of buffer
      and return early.
    - CVE-2026-28418
  * SECURITY UPDATE: Buffer Underflow
    - debian/patches/CVE-2026-28419.patch: Add a check to ensure the
      delimiter (p_7f) is not at the start of the buffer (lbuf) before
      attempting to isolate the tag name.
    - CVE-2026-28419
  * SECURITY UPDATE: Denial of Service
    - debian/patches/CVE-2026-28421.patch: Add bounds checks on
      pe_page_count and pe_bnum against mf_blocknr_max before descending
      into the block tree, and validate pe_old_lnum >= 1 and
      pe_line_count > 0 before calling readfile().
    - CVE-2026-28421

Date: 2026-03-16 05:36:10.571562+00:00
Changed-By: Bruce Cable <bruce.cable at canonical.com>
Signed-By: Ubuntu Archive Robot <ubuntu-archive-robot at lists.canonical.com>
https://launchpad.net/ubuntu/+source/vim/2:8.2.3995-1ubuntu2.26
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