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RHEL 8 : python-pillow (RHSA-2026:98111)
critical Nessus Plugin ID 378738
Synopsis
The remote Red Hat host is missing one or more security updates for python-pillow.Description
The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:98111 advisory.Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.
Security Fix(es):
* pillow: Pillow: Heap buffer overflow in _tiffWriteProc when saving TIFF to BytesIO (CVE-2026-112393)
* pillow: Pillow: Denial of Service via unbounded recursion in PDF parser (CVE-2026-112391)
* pillow: pillow: Denial of service via double free during image transformation (CVE-2026-112402)
* pillow: pillow: Denial of Service via zero-size images in rank filters (CVE-2026-112392)
* pillow: Pillow: Heap buffer overflow in FlashPix (FPX) JPEG decoding leads to code execution (CVE-2026-112398)
* pillow: pillow: Denial of Service via out-of-bounds memory access on zero-width images (CVE-2026-112397)
* pillow: Pillow: Denial of Service via null pointer dereference in Image.merge() (CVE-2026-112405)
* pillow: pillow: Denial of Service via crafted multi-frame image conversion (CVE-2026-112894)
* pillow: pillow: Denial of service via crafted PDF during append operations (CVE-2026-112895)
* pillow: Pillow: Argument Injection in Ghostscript call, potentially leading into RCE (CVE-2026-112900)
* pillow: pillow: Denial of Service via infinite loop during PDF page rewriting (CVE-2026-112406)
* pillow: pillow: Denial of Service via duplicate page references in PDF files (CVE-2026-96640)
* pillow: pillow: Denial of Service via unbounded memory expansion in MSP image decoder (CVE-2026-112892)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL python-pillow package based on the guidance in RHSA-2026:98111.See Also
https://access.redhat.com/errata/RHSA-2026:98111
https://access.redhat.com/security/updates/classification/#critical
https://bugzilla.redhat.com/show_bug.cgi?id=2555846
https://bugzilla.redhat.com/show_bug.cgi?id=2555851
https://bugzilla.redhat.com/show_bug.cgi?id=2555859
https://bugzilla.redhat.com/show_bug.cgi?id=2555866
https://bugzilla.redhat.com/show_bug.cgi?id=2555867
https://bugzilla.redhat.com/show_bug.cgi?id=2555868
https://bugzilla.redhat.com/show_bug.cgi?id=2555873
https://bugzilla.redhat.com/show_bug.cgi?id=2555875
https://bugzilla.redhat.com/show_bug.cgi?id=2555879
https://bugzilla.redhat.com/show_bug.cgi?id=2555889
https://bugzilla.redhat.com/show_bug.cgi?id=2556322
https://bugzilla.redhat.com/show_bug.cgi?id=2558576
Plugin Details
Severity: Critical
ID: 378738
File Name: redhat-RHSA-2026-98111.nasl
Version: 1.1
Type: Local
Agent: unix
Family: Red Hat Local Security Checks
Published: 11/11/2026
Updated: 11/11/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.6
Percentile: 98.11
Vendor
Vendor Severity: Critical
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-112900
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: Critical
Base Score: 9.2
Threat Score: 8.2
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_aus:8.6, p-cpe:/a:redhat:enterprise_linux:python-pillow, p-cpe:/a:redhat:enterprise_linux:python3-pillow
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/11/2026
Vulnerability Publication Date: 10/19/2026
Reference Information
CVE: CVE-2026-112391, CVE-2026-112392, CVE-2026-112393, CVE-2026-112397, CVE-2026-112398, CVE-2026-112402, CVE-2026-112405, CVE-2026-112406, CVE-2026-112892, CVE-2026-112894, CVE-2026-112895, CVE-2026-112900, CVE-2026-96640