Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-84268— Gvfs: sftp: heap-based buffer overflow in read_reply()

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gvfs的SFTP后端未验证服务器提供的长度与分配的缓冲区大小，可能导致越界写入并破坏堆内存，造成拒绝服务或任意代码执行。

CVSS 8.8 · High EPSS 0.36% · P28

Affected Version Matrix 6

VendorProduct Version RangeStatus
GNOME gvfs < 1.60.2 affected
Red Hat Red Hat Enterprise Linux 10 0:1.54.4-4.el10_2.1< * unaffected
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 0:1.36.2-22.el8_10< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:1.48.1-8.el9_8.1< * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-84268

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Gvfs: sftp: heap-based buffer overflow in read_reply()
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read_reply() to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing the operation to write past the intended boundaries. This issue allows a malicious server to corrupt adjacent heap memory in the gvfsd-sftp process, resulting in a denial of service as the process aborts upon detecting the heap corruption or potentially allowing arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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gvfs的SFTP后端未验证服务器提供的长度与分配的缓冲区大小，可能导致越界写入并破坏堆内存，造成拒绝服务或任意代码执行。
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 0:1.54.4-4.el10_2.1 ~ * cpe:/o:redhat:enterprise_linux:10.2
Red Hat Red Hat Enterprise Linux 8 0:1.36.2-22.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 9 0:1.48.1-8.el9_8.1 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
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

II. Public POCs for CVE-2026-84268

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-84268

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-84268 (4)

Other References for CVE-2026-84268 (1)

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

CVE-2026-84269 6.5 MEDIUM Gvfs: afp: heap-based buffer overflow in dsi read path
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-2026-84268

No comments yet

Leave a comment