CVE-2026-40386

medium

Published 2026-05-26 · Modified 2026-05-26

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.5

Description

RHSA-2026:20929: libexif security update (Moderate)

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Red Hat Errata — Red Hat Inc. · View original ↗ · Open-Errata-API

Description libexif: libexif: Denial of Service and information disclosure via integer underflow in MakerNote decoding Red Hat statement Moderate impact. An integer underflow in libexif's Fuji and Olympus MakerNote decoding could allow an attacker to cause a denial of service or information disclosure. This vulnerability affects programs that process specially crafted image files utilizing…

Description

libexif: libexif: Denial of Service and information disclosure via integer underflow in MakerNote decoding

Red Hat statement

Moderate impact. An integer underflow in libexif's Fuji and Olympus MakerNote decoding could allow an attacker to cause a denial of service or information disclosure. This vulnerability affects programs that process specially crafted image files utilizing libexif.

CVSS v3: 4.0 (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L)

Errata / fixed releases

Product	Package	Advisory	Released
Red Hat Enterprise Linux 8	`libexif-0:0.6.22-6.el8_10`	RHSA-2026:20929	2026-05-26T00:00:00Z

Package state

Product	Package	State
Red Hat Enterprise Linux 10	`libexif`	Affected
Red Hat Enterprise Linux 6	`libexif`	Out of support scope
Red Hat Enterprise Linux 7	`libexif`	Affected
Red Hat Enterprise Linux 9	`libexif`	Affected

Apply commands

bash fix

Apply RHSA-2026:20929 for Red Hat Enterprise Linux 8

yum update -y libexif
# or:
dnf upgrade -y libexif

Affected

Vendor	Product	Version
redhat	Red Hat Enterprise Linux 10	`Affected`
redhat	Red Hat Enterprise Linux 7	`Affected`
redhat	Red Hat Enterprise Linux 9	`Affected`

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`0.6.24-1+deb12u1`
debian	bullseye	fixed	`0.6.22-3+deb11u1`
debian	forky	fixed	`0.6.26-1`
debian	sid	fixed	`0.6.26-1`
debian	trixie	fixed	`0.6.25-1+deb13u1`
sles		affected
rhel	8	fixed

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.