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CVE-2026-84268

Gvfs: sftp: heap-based buffer overflow in read_reply()

HIGH 8.8

At a glance

Source
NVD
EPSS
EPSS 0.62 % · percentile 50 ()
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Awaiting Analysis

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.

Weaknesses (CWE)

  • CWE-122 — Heap-based Buffer Overflow

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hredhat
CVSS 3.1HIGH 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HNVD · secalert@redhat.com (Secondary)

European references

Affected products

ProductVersions
GNOME · gvfsaffected 0 < 1.60.2
Red Hat · Red Hat Enterprise Linux 10unaffected 0:1.54.4-4.el10_2.1 < *
Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:1.54.4-2.el10_0.2 < *
Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Supportunaffected 0:1.36.2-7.el7_9.1 < *
Red Hat · Red Hat Enterprise Linux 8unaffected 0:1.36.2-22.el8_10 < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 0:1.36.2-11.el8_4.1 < *
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 0:1.36.2-11.el8_4.1 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 0:1.36.2-11.el8_6.1 < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 0:1.36.2-11.el8_6.1 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 0:1.36.2-14.el8_8.1 < *
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 0:1.36.2-14.el8_8.1 < *
Red Hat · Red Hat Enterprise Linux 9unaffected 0:1.48.1-8.el9_8.1 < *
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 0:1.48.1-4.el9_2.1 < *
Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 0:1.48.1-4.el9_4.1 < *
Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 0:1.48.1-6.el9_6.1 < *
Red Hat · Red Hat Enterprise Linux 6

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD