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Details of issue NIXPKGS-2026-0635

NIXPKGS-2026-0635
published on
Permalink CVE-2026-29775
5.3 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): Low (L)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): Low (L)
updated 2 months, 2 weeks ago by @LeSuisse Activity log
  • Created suggestion 2 months, 2 weeks ago
  • @LeSuisse accepted 2 months, 2 weeks ago
  • @LeSuisse published on GitHub 2 months, 2 weeks ago
FreeRDP has a heap-buffer-overflow in bitmap_cache_put via OOB cacheId

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap out-of-bounds read/write occurs in FreeRDP's bitmap cache subsystem due to an off-by-one boundary check in bitmap_cache_put. A malicious server can send a CACHE_BITMAP_ORDER (Rev1) with cacheId equal to maxCells, bypassing the guard and accessing cells[] one element past the allocated array. This vulnerability is fixed in 3.24.0.

Affected products

FreeRDP
  • ==< 3.24.0

Matching in nixpkgs

Package maintainers

Upstream advisory: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h666-rfw3-jhvj
Upstream patch: https://github.com/FreeRDP/FreeRDP/commit/ffad58fd2b329efd81a3239e9d7e3c927b8e503f