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CVE-2026-84269— Gvfs: afp: heap-based buffer overflow in dsi read path

Quick assessment

Affected
GNOME gvfs
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.

GNOME GVfs是GNOME基金会开源的一个虚拟文件系统。 GNOME GVfs存在缓冲区错误漏洞，该漏洞源于AFP后端DSI读取路径未验证服务器提供的长度与预分配回复缓冲区，导致越界访问，可能造成堆缓冲区溢出并导致gvfsd-afp进程崩溃，造成拒绝服务。

CVSS 6.5 · Medium EPSS 0.45% · P38

Affected Version Matrix 6

VendorProduct Version RangeStatus
GNOME gvfs < 1.60.2 affected
Red Hat Red Hat Enterprise Linux 10 any affected
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-2026-84269

Vulnerability Information
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Vulnerability Title
Gvfs: afp: heap-based buffer overflow in dsi read path
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the AFP backend in gvfs. When mounting a share, a malicious AFP server can cause the DSI read path to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the pre-sized reply buffer, causing the operation to access past the intended boundaries. This issue allows a malicious server to overflow a heap buffer and crash the gvfsd-afp process, resulting in a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
GNOME GVfs 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNOME GVfs是GNOME基金会开源的一个虚拟文件系统。 GNOME GVfs存在缓冲区错误漏洞，该漏洞源于AFP后端DSI读取路径未验证服务器提供的长度与预分配回复缓冲区，导致越界访问，可能造成堆缓冲区溢出并导致gvfsd-afp进程崩溃，造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNOME gvfs 0 ~ 1.60.2 -
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
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-2026-84269

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III. Intelligence Information for CVE-2026-84269

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Vendor Advisories for CVE-2026-84269 (2)

Vendor Pages for CVE-2026-84269 (1)

Same Patch Batch · GNOME · 2026-09-01 · 4 CVEs total

CVE-2026-84268 8.8 HIGH Gvfs: sftp: heap-based buffer overflow in read_reply()
CVE-2026-84270 4.3 MEDIUM Gvfs: mtp: out-of-bounds read in do_read()
CVE-2026-84267 4.3 MEDIUM Gvfs: sftp: uninitialized heap disclosure in read_string()

IV. Related Vulnerabilities

Same product: gvfs
Same vendor: GNOME
Same weakness: CWE-122

V. Comments for CVE-2026-84269

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