SB2026072428 - Anolis OS update for python-pillow
Published: July 24, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2026-54058)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information or cause a denial of service.
The vulnerability exists due to an out-of-bounds read in the PyImaging_MapBuffer mmap path used with the McIdas AREA plugin when processing a crafted image file opened from a filename. A remote attacker can supply a specially crafted McIdas AREA image with an undersized row stride to disclose sensitive information or cause a denial of service.
The issue is reachable when Pillow memory-maps an uncompressed raw tile in a mode listed in Image._MAPMODES, and pixel access operations such as Image.tobytes(), getpixel, convert, or save trigger the read.
2) Out-of-bounds read (CVE-ID: CVE-2026-59198)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in the TGA RLE encoder when saving a mode "1" image through the public save API with TGA RLE compression. A remote attacker can save a specially crafted image to disclose sensitive information.
The issue can serialize adjacent process heap bytes into the generated TGA file, and a maximum-width single-row image can expose nearly the full adjacent heap window.
3) Heap-based buffer overflow (CVE-ID: CVE-2026-59199)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a heap-based buffer overflow in Pillow Image.paste(), Image.crop(), and Image.alpha_composite() when processing attacker-controlled image coordinates near signed 32-bit integer limits. A remote attacker can supply crafted coordinate values to cause a denial of service.
The direct Image.paste() path can copy attacker-controlled source pixel data into the out-of-bounds write, and the issue is reachable through documented public APIs without malformed image files.
4) Resource exhaustion (CVE-ID: CVE-2026-59200)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in PdfParser.PdfStream.decode() in Pillow's PdfParser.py when parsing a crafted FlateDecode-compressed PDF stream. A remote attacker can submit a specially crafted PDF file to cause a denial of service.
The issue occurs because zlib.decompress() is called with the PDF stream Length or DL value as an initial buffer hint without limiting the actual decompressed output size.
5) Infinite loop (CVE-ID: CVE-2026-59203)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the EPS parser in PIL/EpsImagePlugin.py when parsing a crafted EPS %%BeginBinary directive during Image.open(). A remote attacker can supply a specially crafted EPS file with a negative byte count to cause a denial of service.
The issue is triggered during Image.open(), does not require calling Image.load(), and does not require Ghostscript execution.
6) Heap-based buffer overflow (CVE-ID: CVE-2026-59205)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a heap-based buffer overflow in ImageCmsTransform.apply() when processing a caller-supplied output image whose mode does not match the transform's declared output mode. A remote attacker can supply a crafted output image object to cause a denial of service.
The issue is reachable through Pillow's public ImageCms API, and the source image pixels can influence the bytes written out of bounds.
Remediation
Install update from vendor's website.