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CVE-2026-90949— Gimp: gimp: heap-based buffer overflow in psp loader due to selection-channel geometry mismatch

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 6
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GIMP 的 PSP（Paint Shop Pro）文件加载器中存在一个缺陷。在处理压缩的选择通道时，由于分配的缓冲区大小与解压后的数据量不匹配，可能会发生堆缓冲区溢出。远程攻击者可以通过构造一个恶意的 PSP 文件来利用此漏洞。在 GIMP 中打开该文件时，可能导致程序崩溃或任意代码执行。

CVSS 7.8 · High
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I. Basic Information for CVE-2026-90949

Vulnerability Information
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Vulnerability Title
Gimp: gimp: heap-based buffer overflow in psp loader due to selection-channel geometry mismatch
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in GIMP's PSP (Paint Shop Pro) file loader. When processing a compressed selection channel, a heap-based buffer overflow can occur due to a mismatch between the allocated buffer size and the amount of data decompressed. A remote attacker could exploit this vulnerability by crafting a malicious PSP file. Opening this file in GIMP could lead to a crash or arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-90949

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III. Intelligence Information for CVE-2026-90949

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Vendor Advisories for CVE-2026-90949 (1)

Vendor Pages for CVE-2026-90949 (1)

Other References for CVE-2026-90949 (1)

Same Patch Batch · Red Hat · 2026-09-14 · 7 CVEs total

CVE-2026-90947 7.8 HIGH Gimp: gimp: out-of-bounds write in lighting effects plugin via crafted preset file
CVE-2026-90948 7.8 HIGH Gimp: gimp: heap-based buffer overflow in ico loader via integer overflow in embedded png
CVE-2026-90995 5.5 MEDIUM Sssd: sssd: local denial of service due to null pointer dereference in pam responder
CVE-2026-90996 4.0 MEDIUM Sssd: sssd: denial of service in nss responder via crafted zero-length requests
CVE-2026-90994 4.0 MEDIUM Sssd: sssd: denial of service via malformed pam v1 requests
CVE-2026-90463 4.0 MEDIUM Sssd: local oob read in nss service request parsers (`sss_nss_protocol_parse_svc_name` / `

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 6
Same vendor: Red Hat
Same weakness: CWE-787

V. Comments for CVE-2026-90949

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