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CVE-2026-18090

Gdk-pixbuf: gdk-pixbuf: heap out-of-bounds read in uncompress() via crafted icns rle block

6.1 Medium

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
High

Exploit likelihood

0.23%Up 0.1 points since Sep 9, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.1

Gdk-pixbuf: gdk-pixbuf: heap out-of-bounds read in uncompress() via crafted icns rle block

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Record
CVE-2026-18090
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness
CWE-125
Updated
2026-11-06
EUVDEUVD-2026-74294 6.1

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Record
EUVD-2026-74294
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Updated
2026-11-06
GitHub AdvisoriesGHSA-wjgf-rg4p-gj99 6.1

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out...

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Record
GHSA-wjgf-rg4p-gj99
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
NVD 6.1

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Record
CVE-2026-18090
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness
CWE-125
Updated
2026-11-06
OSVDEBIAN-CVE-2026-18090 6.1

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Record
DEBIAN-CVE-2026-18090
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Updated
2026-11-07
OSVUBUNTU-CVE-2026-18090 6.1

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Record
UBUNTU-CVE-2026-18090
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Updated
2026-11-02
OSVAZL-100929 No score

CVE-2026-18090 affecting package gdk-pixbuf2 2.42.10-6

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Record
AZL-100929
Updated
2026-11-05

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gdk-pixbuf2
Azure Linux:3
 through 2.42.10-6 None known
gdk-pixbuf
Debian:12
 All versions, plus listed versions
2.42.10+dfsg-12.42.10+dfsg-1+deb12u12.42.10+dfsg-1+deb12u22.42.10+dfsg-1+deb12u32.42.10+dfsg-1+deb12u4
Show 21 moreShow less
2.42.10+dfsg-22.42.10+dfsg-32.42.12+dfsg-12.42.12+dfsg-22.42.12+dfsg-32.42.12+dfsg-42.42.12+dfsg-52.44.3+dfsg-12.44.3+dfsg-22.44.3+dfsg-32.44.4+dfsg-12.44.4+dfsg-22.44.4+dfsg-32.44.5+dfsg-12.44.5+dfsg-22.44.5+dfsg-32.44.5+dfsg-42.44.6+dfsg-12.44.6+dfsg-22.44.7+dfsg-12.44.8+dfsg-1
 None known
gdk-pixbuf
Debian:13
 All versions, plus listed versions
2.42.12+dfsg-42.42.12+dfsg-4+deb13u12.42.12+dfsg-52.44.3+dfsg-12.44.3+dfsg-2
Show 12 moreShow less
2.44.3+dfsg-32.44.4+dfsg-12.44.4+dfsg-22.44.4+dfsg-32.44.5+dfsg-12.44.5+dfsg-22.44.5+dfsg-32.44.5+dfsg-42.44.6+dfsg-12.44.6+dfsg-22.44.7+dfsg-12.44.8+dfsg-1
 None known
gdk-pixbuf
Debian:14
 All versions, plus listed versions
2.42.12+dfsg-42.42.12+dfsg-52.44.3+dfsg-12.44.3+dfsg-22.44.3+dfsg-3
Show 11 moreShow less
2.44.4+dfsg-12.44.4+dfsg-22.44.4+dfsg-32.44.5+dfsg-12.44.5+dfsg-22.44.5+dfsg-32.44.5+dfsg-42.44.6+dfsg-12.44.6+dfsg-22.44.7+dfsg-12.44.8+dfsg-1
 None known
gdk-pixbuf
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
2.32.1-12.32.2-12.32.2-1ubuntu12.32.2-1ubuntu1.22.32.2-1ubuntu1.3
Show 6 moreShow less
2.32.2-1ubuntu1.42.32.2-1ubuntu1.52.32.2-1ubuntu1.62.32.2-1ubuntu1.6+esm12.32.2-1ubuntu1.6+esm22.32.2-1ubuntu1.6+esm3
 None known
gdk-pixbuf
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
2.36.11-12.36.11-1ubuntu0.12.36.11-22.36.11-2ubuntu0.1~esm12.36.11-2ubuntu0.1~esm22.36.11-2ubuntu0.1~esm3
 None known
gdk-pixbuf
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
2.40.0+dfsg-1build12.40.0+dfsg-1ubuntu12.40.0+dfsg-22.40.0+dfsg-32.40.0+dfsg-3ubuntu0.1
Show 6 moreShow less
2.40.0+dfsg-3ubuntu0.22.40.0+dfsg-3ubuntu0.32.40.0+dfsg-3ubuntu0.42.40.0+dfsg-3ubuntu0.52.40.0+dfsg-3ubuntu0.5+esm12.40.0+dfsg-3ubuntu0.5+esm3
 None known
gdk-pixbuf
Ubuntu:22.04:LTS
 All versions, plus listed versions
2.42.6+dfsg-1build22.42.6+dfsg-1build32.42.6+dfsg-2ubuntu22.42.6+dfsg-2ubuntu32.42.8+dfsg-1
Show 5 moreShow less
2.42.8+dfsg-1ubuntu0.12.42.8+dfsg-1ubuntu0.22.42.8+dfsg-1ubuntu0.32.42.8+dfsg-1ubuntu0.42.42.8+dfsg-1ubuntu0.5
 None known
gdk-pixbuf
Ubuntu:24.04:LTS
 All versions, plus listed versions
2.42.10+dfsg-1build12.42.10+dfsg-32.42.10+dfsg-3ubuntu12.42.10+dfsg-3ubuntu22.42.10+dfsg-3ubuntu32.42.10+dfsg-3ubuntu3.12.42.10+dfsg-3ubuntu3.22.42.10+dfsg-3ubuntu3.3
 None known
gdk-pixbuf
Ubuntu:26.10
 All versions, plus listed versions
2.44.5+dfsg-4ubuntu12.44.7+dfsg-12.44.8+dfsg-1
 None known
gdk-pixbuf
Ubuntu:26.04:LTS
 All versions, plus listed versions
2.42.12+dfsg-52.44.4+dfsg-12.44.5+dfsg-32.44.5+dfsg-42.44.5+dfsg-4ubuntu1
 None known

History

History
RecordedChangedSources
factsOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-18090 is a medium vulnerability (CVSS 6.1) in Red Hat Enterprise Linux 10, published September 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 13th percentile. No source names a fixed version.

References

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