BIT-PILLOW-2026-96642 Pillow: TarIO negative size field causes infinite CPU-spin loop

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

PT-2026-132467

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

SUSE CVE-2026-96642

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

GHSA-3J72-P6QG-6XP7 Pillow: TarIO negative size field causes infinite CPU-spin loop

Summary TarIO.init does not check that a tar header's size field is positive. A crafted header with a negative size makes it seek backward onto itself. This causes an infinite loop that uses 100% CPU and never returns. Details TarIO.init reads 512-byte tar headers one at a time, looking for a...

EUVD-2026-107561

Pillow: TarIO negative size field causes infinite CPU-spin loop...

Pillow: TarIO negative size field causes infinite CPU-spin loop

Summary TarIO.init does not check that a tar header's size field is positive. A crafted header with a negative size makes it seek backward onto itself. This causes an infinite loop that uses 100% CPU and never returns. Details TarIO.init reads 512-byte tar headers one at a time, looking for a...

Linux Distros Unpatched Vulnerability : CVE-2026-96642

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek...

CVE-2026-96642

A flaw was found in Pillow. When an application processes tar archives using the TarIO component, an archive containing an invalid negative member size causes the parser to enter an infinite loop by repeatedly reading the same header. An attacker could exploit this by providing a specially crafte...

DEBIAN-CVE-2026-96642

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

CVE-2026-96642

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

PYSEC-2026-4341

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

PYSEC-2026-4341

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

UBUNTU-CVE-2026-96642

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

CVE-2026-96642

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

CVE-2026-96642 Pillow: TarIO negative size field causes infinite CPU-spin loop

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

CVE-2026-96642

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

CVE-2026-96642 Pillow: TarIO negative size field causes infinite CPU-spin loop

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

CVE-2026-96642 Pillow: TarIO negative size field causes infinite CPU-spin loop

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...

CVE-2026-96642

The Pillow Python imaging library is vulnerable to an infinite CPU-spin loop in the TarIO initializer (located in src/PIL/TarIO.py) in versions prior to 13.0.0 . The root cause is the acceptance of a negative octal member size , which triggers a backward seek that returns to the same 512-byte hea...

CVE-2026-96642

Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consum...