Vulmon
Amazon Linux 1 Security Advisory: ALAS-2024-1927
Advisory Release Date: 2024-04-11 01:43 Pacific
Advisory Updated Date: 2024-04-15 12:00 Pacific
Severity:
Important
Issue Overview:
The ProcRenderAddGlyphs() function calls the AllocateGlyph() function to store new glyphs sent by the client to the X server. AllocateGlyph() would return a new glyph with refcount=0 and a re-used glyph would end up not changing the refcount at all. The resulting glyph_new array would thus have multiple entries pointing to the same non-refcounted glyphs.
ProcRenderAddGlyphs() may free a glyph, resulting in a use-after-free when the same glyph pointer is then later used. (CVE-2024-31083)
Affected Packages:
tigervnc
Issue Correction:
Run yum update tigervnc to update your system.
New Packages:
i686:
tigervnc-debuginfo-1.8.0-21.36.amzn1.i686
tigervnc-1.8.0-21.36.amzn1.i686
tigervnc-server-module-1.8.0-21.36.amzn1.i686
tigervnc-server-1.8.0-21.36.amzn1.i686
src:
tigervnc-1.8.0-21.36.amzn1.src
x86_64:
tigervnc-debuginfo-1.8.0-21.36.amzn1.x86_64
tigervnc-1.8.0-21.36.amzn1.x86_64
tigervnc-server-1.8.0-21.36.amzn1.x86_64
tigervnc-server-module-1.8.0-21.36.amzn1.x86_64