CVE-2023-44216

CVE-2023-44216 is a medium-severity vulnerability in Canonical Ubuntu Linux with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-203.

Key facts

• Severity: Medium (CVSS 3.x base score 5.3)
• EPSS exploit prediction: 2% (76th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-203
• Affected product: Canonical Ubuntu Linux
• Published: 2023-09-27
• Last modified: 2026-06-17

Description

PVRIC (PowerVR Image Compression) on Imagination 2018 and later GPU devices offers software-transparent compression that enables cross-origin pixel-stealing attacks against feTurbulence and feBlend in the SVG Filter specification, aka a GPU.zip issue. For example, attackers can sometimes accurately determine text contained on a web page from one origin if they control a resource from a different origin.

Frequently asked questions

What is CVE-2023-44216?

PVRIC (PowerVR Image Compression) on Imagination 2018 and later GPU devices offers software-transparent compression that enables cross-origin pixel-stealing attacks against feTurbulence and feBlend in the SVG Filter specification, aka a GPU.zip issue. For example, attackers can sometimes accurately determine text contained on a web page from one origin if they control a resource from a different origin.

How severe is CVE-2023-44216?

CVE-2023-44216 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-44216 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-44216?

CVE-2023-44216 primarily affects Canonical Ubuntu Linux. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-44216?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-44216 published?

CVE-2023-44216 was published on 2023-09-27 and last updated on 2026-06-17.

References

• https://arstechnica.com/security/2023/09/gpus-from-all-major-suppliers-are-vulnerable-to-new-pixel-stealing-attack/
• https://blog.imaginationtech.com/introducing-pvric4-taking-image-compression-to-the-next-level/
• https://blog.imaginationtech.com/reducing-bandwidth-pvric/
• https://github.com/UT-Security/gpu-zip
• https://news.ycombinator.com/item?id=37663159
• https://www.bleepingcomputer.com/news/security/modern-gpus-vulnerable-to-new-gpuzip-side-channel-attack/
• https://www.hertzbleed.com/gpu.zip/
• https://www.hertzbleed.com/gpu.zip/GPU-zip.pdf
• https://www.w3.org/TR/filter-effects-1/

Affected products (17)

• cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*
• cpe:2.3:h:amd:ryzen_7_4800u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i7-10510u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i7-12700k:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i7-8700:-:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_11:-:*:*:*:professional:*:*:*
• cpe:2.3:h:intel:core_i7-10610u:-:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_11:-:*:*:*:home:*:*:*
• cpe:2.3:h:intel:core_i7-11800h:-:*:*:*:*:*:*:*
• cpe:2.3:h:nvidia:geforce_rtx_3060:-:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_10:-:*:*:*:pro:*:*:*
• cpe:2.3:h:amd:ryzen_5_7600x:-:*:*:*:*:*:*:*
• cpe:2.3:h:nvidia:geforce_rtx_2080_super:-:*:*:*:*:*:*:*
• cpe:2.3:o:apple:macos:13.1:*:*:*:*:*:*:*
• cpe:2.3:h:apple:m1_mac_mini:-:*:*:*:*:*:*:*
• cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*
• cpe:2.3:h:google:pixel_6:-:*:*:*:*:*:*:*

More vulnerabilities in Canonical Ubuntu Linux

• CVE-2023-1523 — Critical (CVSS 10.0): Using the TIOCLINUX ioctl request, a malicious snap could inject contents into the input of the controlling terminal…
• CVE-2020-13753 — Critical (CVSS 10.0): The bubblewrap sandbox of WebKitGTK and WPE WebKit, prior to 2.28.3, failed to properly block access to CLONE_NEWUSER…
• CVE-2018-18505 — Critical (CVSS 10.0): An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to…
• CVE-2017-16845 — Critical (CVSS 10.0): hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds…
• CVE-2016-0494 — Critical (CVSS 10.0): Unspecified vulnerability in the Java SE and Java SE Embedded components in Oracle Java SE 6u105, 7u91, and 8u66 and…
• CVE-2016-0483 — Critical (CVSS 10.0): Unspecified vulnerability in Oracle Java SE 6u105, 7u91, and 8u66; Java SE Embedded 8u65; and JRockit R28.3.8 allows…

All CVEs affecting Canonical Ubuntu Linux →

Other CWE-203 (Observable Discrepancy) vulnerabilities

• CVE-2019-25337 — Critical (CVSS 9.8): OwnCloud 8.1.8 contains a username enumeration vulnerability that allows remote attackers to discover user accounts by…
• CVE-2026-23519 — Critical (CVSS 9.8): RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in…
• CVE-2025-27667 — Critical (CVSS 9.8): Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 22.0.843 Application 20.0.1923 allows Administrative…
• CVE-2024-25714 — Critical (CVSS 9.8): In Rhonabwy through 1.1.13, HMAC signature verification uses a strcmp function that is vulnerable to side-channel…
• CVE-2024-25191 — Critical (CVSS 9.8): php-jwt 1.0.0 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass…
• CVE-2024-25190 — Critical (CVSS 9.8): l8w8jwt 2.2.1 uses memcmp (which is not constant time) to verify authentication, which makes it easier to bypass…

Browse all CWE-203 (Observable Discrepancy) vulnerabilities →