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CVE-2026-82343— Gimp: heap out-of-bounds read and stack out-of-bounds access in psd loader from channel-count handling

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 file-psd 插件中存在一个缺陷。在处理一个精心构造的 PSD 图像文件时，该插件未对通道数量（channel-count）参数进行正确校验。这种不正确的校验会导致内存边界检查不当，从而引发堆内存越界读取和栈内存越界访问。该问题可能导致应用程序崩溃，进而造成服务拒绝（DoS），或导致内存内容被有限地泄露。

CVSS 6.1 · Medium

Affected Version Matrix 4

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-82343

Vulnerability Information
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Vulnerability Title
Gimp: heap out-of-bounds read and stack out-of-bounds access in psd loader from channel-count handling
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the file-psd plugin in GIMP. When processing a specially crafted PSD image file, the plugin does not properly validate the channel-count parameter. This incorrect validation leads to improper memory bounds checking, resulting in both a heap out-of-bounds read and a stack out-of-bounds access. This issue can result in an application crash, leading to a denial of service or a limited information disclosure of memory contents.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
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-2026-82343

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III. Intelligence Information for CVE-2026-82343

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Vendor Advisories for CVE-2026-82343 (1)

Vendor Pages for CVE-2026-82343 (1)

Other References for CVE-2026-82343 (1)

Same Patch Batch · Red Hat · 2026-08-28 · 6 CVEs total

CVE-2026-82330 6.1 MEDIUM Gimp: heap out-of-bounds read in pvr vq (compressed) decoder due to missing bounds check
CVE-2026-82328 6.1 MEDIUM Gimp: heap out-of-bounds read in ico loader via unvalidated used_clrs palette count
CVE-2026-82324 6.1 MEDIUM Gimp: heap out-of-bounds reads in iff/ilbm loader from ham row size mismatch and nplanes=0
CVE-2026-82327 5.5 MEDIUM Libsolv: libsolv: out-of-bounds write in repo_write() via unvalidated directory id from ve
CVE-2026-18393 5.4 MEDIUM Ffmpeg: ffmpeg: heap buffer overflow in tdsc_load_cursor() via cur_fmt_mono cursor

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 6
Same vendor: Red Hat
Same weakness: CWE-120

V. Comments for CVE-2026-82343

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