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Details of issue NIXPKGS-2026-0735

NIXPKGS-2026-0735
published 2 months, 4 weeks ago
Permalink CVE-2026-33165
5.5 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Local (L)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): Required (R)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Local (L)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): Required (R)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
updated 2 months, 4 weeks ago by @LeSuisse Activity log
  • Created suggestion 2 months, 4 weeks ago
  • @LeSuisse accepted 2 months, 4 weeks ago
  • @LeSuisse published on GitHub 2 months, 4 weeks ago
heap out-of-bounds write in libde265 1.0.16

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a crafted HEVC bitstream causes an out-of-bounds heap write confirmed by AddressSanitizer. The trigger is a stale ctb_info.log2unitSize after an SPS change where PicWidthInCtbsY and PicHeightInCtbsY stay constant but Log2CtbSizeY changes, causing set_SliceHeaderIndex to index past the allocated image metadata array and write 2 bytes past the end of a heap allocation. This issue has been patched in version 1.0.17.

Affected products

libde265
  • ==< 1.0.17

Matching in nixpkgs

Upstream advisory: https://github.com/strukturag/libde265/security/advisories/GHSA-653q-9f73-8hvg
Upstream patch: https://github.com/strukturag/libde265/commit/c7891e412106130b83f8e8ea8b7f907e9449b658