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CVE-2026-47714

libheif has integer overflow in inline mask size calculation that causes undersized buffer allocation

6.1 MediumFix available

CVE-2026-47714 is a medium vulnerability (CVSS 6.1) in Struktur Libheif, published May 28, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 4th percentile. Fixed in libheif 1.22.2-r0.

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in libheif/region.cc contains an integer overflow. Both width and height are unsigned int (32-bit) values parsed from the HEIF file. Their product can exceed UINT32_MAX, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a width x height bitmap. Version 1.22.0 patches the issue.

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

0.15%Up 0.1 points since Jun 12, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.1

libheif has integer overflow in inline mask size calculation that causes undersized buffer allocation

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in libheif/region.cc contains an integer overflow. Both width and height are unsigned int (32-bit) values parsed from the HEIF file. Their product can exceed UINT32_MAX, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a width x height bitmap. Version 1.22.0 patches the issue.

Record
CVE-2026-47714
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-190
Updated
2026-11-02
EUVDEUVD-2026-46434 6.1

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in libheif/region.cc contains an integer overflow. Both width and height are unsigned int (32-bit) values parsed from the HEIF file. Their product can exceed UINT32_MAX, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a width x height bitmap. Version 1.22.0 patches the issue.

Record
EUVD-2026-46434
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
NVD 6.1

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in libheif/region.cc contains an integer overflow. Both width and height are unsigned int (32-bit) values parsed from the HEIF file. Their product can exceed UINT32_MAX, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a width x height bitmap. Version 1.22.0 patches the issue.

Record
CVE-2026-47714
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-190
Updated
2026-11-02
OSV 6.1

libheif has integer overflow in inline mask size calculation that causes undersized buffer allocation

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in libheif/region.cc contains an integer overflow. Both width and height are unsigned int (32-bit) values parsed from the HEIF file. Their product can exceed UINT32_MAX, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a width x height bitmap. Version 1.22.0 patches the issue.

Record
CVE-2026-47714
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-190
Updated
2026-11-02
OSVDEBIAN-CVE-2026-47714 6.1

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in libheif/region.cc contains an integer overflow. Both width and height are unsigned int (32-bit) values parsed from the HEIF file. Their product can exceed UINT32_MAX, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a width x height bitmap. Version 1.22.0 patches the issue.

Record
DEBIAN-CVE-2026-47714
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
OSVJLSEC-2026-1100 6.1

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in libheif/region.cc contains an integer overflow. Both width and height are unsigned int (32-bit) values parsed from the HEIF file. Their product can exceed UINT32_MAX, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a width x height bitmap. Version 1.22.0 patches the issue.

Record
JLSEC-2026-1100
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
Show 5 moreShow less
OSVUBUNTU-CVE-2026-47714 6.1

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in libheif/region.cc contains an integer overflow. Both width and height are unsigned int (32-bit) values parsed from the HEIF file. Their product can exceed UINT32_MAX, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a width x height bitmap. Version 1.22.0 patches the issue.

Record
UBUNTU-CVE-2026-47714
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
OSVopenSUSE-SU-2026:10878-1 No score

gdk-pixbuf-loader-libheif-1.22.2-1.1 on GA media

These are all security issues fixed in the gdk-pixbuf-loader-libheif-1.22.2-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:10878-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:20974-1 No score

Security update for libheif

This update for libheif fixes the following issues

Update to 1.23.0:

  • CVE-2025-68431: heap buffer over-read in HeifPixelImage: overlay() via crafted HEIF that exercises the overlay image item (bsc#1255735).

  • CVE-2026-3949: manipulation of the argument size of a malicious frame can lead to out-of-bounds read (bsc#1259541).

  • CVE-2026-3950: manipulation of the component stsz/stts can lead to out-of-bounds read (bsc#1259544).

  • CVE-2026-32738: Heap OOB Read / SEGV Crash via Zero samples_per_chunk in stsc (bsc#1265874).

  • CVE-2026-32739: Infinite Loop DoS in stts Sample Duration Lookup (bsc#1265875).

  • CVE-2026-32740: Heap-Buffer-Overflow Write in Grid Tile Chroma Compositing (bsc#1265876).

  • CVE-2026-32741: heap buffer overflow in decode_mask_image() (bsc#1265877).

  • CVE-2026-32814: Uninitialized Heap Memory Information Leak via Failed Grid Tiles (bsc#1265878).

  • CVE-2026-32882: Heap Buffer OOB Read in overlay compositing due to wrong alpha stride (bsc#1265879).

  • CVE-2026-41069: Out-of-bounds vector access leading to invalid dereference (bsc#1265979).

  • CVE-2026-41071: Heap buffer over-read in SampleAuxInfoReader via crafted HEIF sequence file with mismatched saiz sample count (bsc#1265980).

  • CVE-2026-47178: Heap Out Of Bounds Write in unci subsystem (bsc#1265981).

  • CVE-2026-47247: Heap Information Disclosure via Grid Image Gap + Uninitialized Pixel Plane Allocation (bsc#1265982).

  • CVE-2026-47251: integer overflow bypass in vvdec_push_data2 (bsc#1265983).

  • CVE-2026-47254: Heap Buffer Overflow in Track: get_next_sample_raw_data() -- OOB Chunk Vector Access (bsc#1265987).

  • CVE-2026-47709: NULL pointer dereference in heif_image_handle_get_image_tiling for malformed unci image missing ispe (bsc#1265988).

  • CVE-2026-47714: Integer overflow in inline mask size calculation causes undersized buffer allocation (bsc#1265989).

  • CVE-2026-48029: heap OOB read in ImageItem_Grid: decode_grid_tile via irot-induced tile-coordinate underflow (bsc#1265990).

  • CVE-2026-49271: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder (bsc#1266282).

  • CVE-2026-50142: unbounded heap allocation in HEIF sequence parser (bsc#1267455).

  • Heap buffer overflow via uint32_t stride overflow in image plane allocation (+ 2 additional instances) (bsc#1265997).

  • Incorrect byte-count initialization in BitstreamRange constructor allows container-boundary check bypass (bsc#1265995).

  • Integer Overflow in SampleAuxInfoReader Offset Calculation (bsc#1265992).

  • Out-of-bounds read and assertion-based DoS in EXIF parsing (find_exif_tag / read32) with short EXIF TIFF payload (bsc#1265996).

  • Out-of-bounds write in inline mask region API when source mask exceeds declared region (bsc#1266281).

  • update to 1.23.0:

  • add API functions to read and write metadata: ambient viewing environment nominal diffuse white luminance
  • update to 1.22.2:
  • adds a output_image_nclx_profile_passthrough option to heif_decoding_options
  • build issues with OpenJPEG plugin (#1813)
  • non-plain C in header (#1812)
  • update to 1.22.0:
  • This is a large release with substantial new functionality, mainly focusing on generalized image formats (e.g., multi- spectral images) and a reworked implementation of ISO/IEC 23001-17 (lossless image codec).
  • HDR up to 64 bpp
  • Multi-component images with arbitrary component layouts (multi-spectral images, arbitrary non-visual data)
  • Filter-array (Bayer / mosaic) images, with debayering in color transformation pipeline
  • Metadata: chroma-sample location (cloc), sample non- uniformity (snuc), sensor bad-pixel map (sbpm), polarization pattern (splz)
  • heif-dec can now convert to WebP (thanks to @torusrxxx).
  • heif-enc can now accept input from WebP, HEIF, pure raw files (including floating point pixel data), and CMYK JPEG (converted to RGB).
  • TIFF input can now read many TIFF formats used in geospatial imaging, like: 16-bit, signed integers, float samples, tiled TIFFs,…
Record
openSUSE-SU-2026:20974-1
Updated
2026-11-02
OSVSUSE-SU-2026:22153-1 No score

Security update for libheif

This update for libheif fixes the following issues

Update to 1.23.0:

  • CVE-2025-68431: heap buffer over-read in HeifPixelImage: overlay() via crafted HEIF that exercises the overlay image item (bsc#1255735).

  • CVE-2026-3949: manipulation of the argument size of a malicious frame can lead to out-of-bounds read (bsc#1259541).

  • CVE-2026-3950: manipulation of the component stsz/stts can lead to out-of-bounds read (bsc#1259544).

  • CVE-2026-32738: Heap OOB Read / SEGV Crash via Zero samples_per_chunk in stsc (bsc#1265874).

  • CVE-2026-32739: Infinite Loop DoS in stts Sample Duration Lookup (bsc#1265875).

  • CVE-2026-32740: Heap-Buffer-Overflow Write in Grid Tile Chroma Compositing (bsc#1265876).

  • CVE-2026-32741: heap buffer overflow in decode_mask_image() (bsc#1265877).

  • CVE-2026-32814: Uninitialized Heap Memory Information Leak via Failed Grid Tiles (bsc#1265878).

  • CVE-2026-32882: Heap Buffer OOB Read in overlay compositing due to wrong alpha stride (bsc#1265879).

  • CVE-2026-41069: Out-of-bounds vector access leading to invalid dereference (bsc#1265979).

  • CVE-2026-41071: Heap buffer over-read in SampleAuxInfoReader via crafted HEIF sequence file with mismatched saiz sample count (bsc#1265980).

  • CVE-2026-47178: Heap Out Of Bounds Write in unci subsystem (bsc#1265981).

  • CVE-2026-47247: Heap Information Disclosure via Grid Image Gap + Uninitialized Pixel Plane Allocation (bsc#1265982).

  • CVE-2026-47251: integer overflow bypass in vvdec_push_data2 (bsc#1265983).

  • CVE-2026-47254: Heap Buffer Overflow in Track: get_next_sample_raw_data() -- OOB Chunk Vector Access (bsc#1265987).

  • CVE-2026-47709: NULL pointer dereference in heif_image_handle_get_image_tiling for malformed unci image missing ispe (bsc#1265988).

  • CVE-2026-47714: Integer overflow in inline mask size calculation causes undersized buffer allocation (bsc#1265989).

  • CVE-2026-48029: heap OOB read in ImageItem_Grid: decode_grid_tile via irot-induced tile-coordinate underflow (bsc#1265990).

  • CVE-2026-49271: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder (bsc#1266282).

  • CVE-2026-50142: unbounded heap allocation in HEIF sequence parser (bsc#1267455).

  • Heap buffer overflow via uint32_t stride overflow in image plane allocation (+ 2 additional instances) (bsc#1265997).

  • Incorrect byte-count initialization in BitstreamRange constructor allows container-boundary check bypass (bsc#1265995).

  • Integer Overflow in SampleAuxInfoReader Offset Calculation (bsc#1265992).

  • Out-of-bounds read and assertion-based DoS in EXIF parsing (find_exif_tag / read32) with short EXIF TIFF payload (bsc#1265996).

  • Out-of-bounds write in inline mask region API when source mask exceeds declared region (bsc#1266281).

  • update to 1.23.0:

  • add API functions to read and write metadata: ambient viewing environment nominal diffuse white luminance
  • update to 1.22.2:
  • adds a output_image_nclx_profile_passthrough option to heif_decoding_options
  • build issues with OpenJPEG plugin (#1813)
  • non-plain C in header (#1812)
  • update to 1.22.0:
  • This is a large release with substantial new functionality, mainly focusing on generalized image formats (e.g., multi- spectral images) and a reworked implementation of ISO/IEC 23001-17 (lossless image codec).
  • HDR up to 64 bpp
  • Multi-component images with arbitrary component layouts (multi-spectral images, arbitrary non-visual data)
  • Filter-array (Bayer / mosaic) images, with debayering in color transformation pipeline
  • Metadata: chroma-sample location (cloc), sample non- uniformity (snuc), sensor bad-pixel map (sbpm), polarization pattern (splz)
  • heif-dec can now convert to WebP (thanks to @torusrxxx).
  • heif-enc can now accept input from WebP, HEIF, pure raw files (including floating point pixel data), and CMYK JPEG (converted to RGB).
  • TIFF input can now read many TIFF formats used in geospatial imaging, like: 16-bit, signed integers, float samples, tiled TIFFs,…
Record
SUSE-SU-2026:22153-1
Updated
2026-11-02
OSVSUSE-SU-2026:2622-1 No score

Security update for libheif

This update for libheif fixes the following issues

Update to 1.23.0:

  • CVE-2025-68431: heap buffer over-read in HeifPixelImage: overlay() via crafted HEIF that exercises the overlay image item (bsc#1255735).
  • CVE-2026-3950: manipulation of the component stsz/stts can lead to out-of-bounds read (bsc#1259544).
  • CVE-2026-32738: Heap OOB Read / SEGV Crash via Zero samples_per_chunk in stsc (bsc#1265874).
  • CVE-2026-32739: Infinite Loop DoS in stts Sample Duration Lookup (bsc#1265875).
  • CVE-2026-32740: Heap-Buffer-Overflow Write in Grid Tile Chroma Compositing (bsc#1265876).
  • CVE-2026-32741: heap buffer overflow in decode_mask_image() (bsc#1265877).
  • CVE-2026-32814: Uninitialized Heap Memory Information Leak via Failed Grid Tiles (bsc#1265878).
  • CVE-2026-32882: Heap Buffer OOB Read in overlay compositing due to wrong alpha stride (bsc#1265879).
  • CVE-2026-41069: Out-of-bounds vector access leading to invalid dereference (bsc#1265979).
  • CVE-2026-41071: Heap buffer over-read in SampleAuxInfoReader via crafted HEIF sequence file with mismatched saiz sample count (bsc#1265980).
  • CVE-2026-47178: Heap Out Of Bounds Write in unci subsystem (bsc#1265981).
  • CVE-2026-47247: Heap Information Disclosure via Grid Image Gap + Uninitialized Pixel Plane Allocation (bsc#1265982).
  • CVE-2026-47251: integer overflow bypass in vvdec_push_data2 (bsc#1265983).
  • CVE-2026-47254: Heap Buffer Overflow in Track: get_next_sample_raw_data() -- OOB Chunk Vector Access (bsc#1265987).
  • CVE-2026-47709: NULL pointer dereference in heif_image_handle_get_image_tiling for malformed unci image missing ispe (bsc#1265988).
  • CVE-2026-47714: Integer overflow in inline mask size calculation causes undersized buffer allocation (bsc#1265989).
  • CVE-2026-48029: heap OOB read in ImageItem_Grid: decode_grid_tile via irot-induced tile-coordinate underflow (bsc#1265990).
  • CVE-2026-49271: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder (bsc#1266282).
  • CVE-2026-50142: unbounded heap allocation in HEIF sequence parser (bsc#1267455).
  • Heap buffer overflow via uint32_t stride overflow in image plane allocation (+ 2 additional instances) (bsc#1265997).
  • Incorrect byte-count initialization in BitstreamRange constructor allows container-boundary check bypass (bsc#1265995).
  • Integer Overflow in SampleAuxInfoReader Offset Calculation (bsc#1265992).
  • Out-of-bounds read and assertion-based DoS in EXIF parsing (find_exif_tag / read32) with short EXIF TIFF payload (bsc#1265996).
  • Out-of-bounds write in inline mask region API when source mask exceeds declared region (bsc#1266281).

Changes for libheif:

  • version update to 1.23.0:
  • add API functions to read and write metadata: ambient viewing environment nominal diffuse white luminance
  • adds a output_image_nclx_profile_passthrough option to heif_decoding_options
  • CVE-2026-50142 (GHSA-jvmp-j3cw-84mh) - unbounded heap allocation in HEIF sequence parser (stsz fixed-size mode missing bound check)
  • version update to 1.22.2:
  • build issues with OpenJPEG plugin (#1813)
  • non-plain C in header (#1812)
  • CVE-2026-49271 (GHSA-r7qj-cg5r-r6vf) - Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder
  • CVE TBD (GHSA-5hqq-636x-r3cr) - Out-of-bounds write in inline mask region API when source mask exceeds declared region
  • update to 1.22.0:
  • This is a large release with substantial new functionality, mainly focusing on generalized image formats (e.g., multi- spectral images) and a reworked implementation of ISO/IEC 23001-17 (lossless image codec).
  • HDR up to 64 bpp
  • Multi-component images with arbitrary component layouts (multi-spectral images, arbitrary non-visual data)
  • Filter-array (Bayer / mosaic) images, with debayering in color transformation pipeline
  • Metadata: chroma-sample location (cloc), sample non- uniformity (snuc), sensor bad-pixel map (sbpm), polarization pattern (splz)
  • heif-dec can…
Record
SUSE-SU-2026:2622-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libheif
Alpaquita:stream
 1.20.2-r2 up to 1.22.2-r0
1.22.2-r0
libheif
Debian:12
 All versions, plus listed versions
1.15.1-11.15.1-1+deb12u11.16.2-11.16.2-21.16.2-3
Show 35 moreShow less
1.17.0-11.17.1-11.17.4-11.17.6-11.17.6-21.17.6-31.17.6-41.18.1-11.18.1-21.18.2-11.18.2-21.19.1-11.19.1-1~bpo12+11.19.1-1~bpo12+21.19.3-11.19.3-1~bpo12+11.19.5-11.19.7-11.19.7-1~bpo12+11.19.8-11.20.1-11.20.2-11.20.2-21.21.2-11.21.2-21.21.2-31.21.2-41.23.1-11.23.2-11.23.3-11.23.4-11.23.4-1~deb13u11.23.6-11.23.6-21.23.6-2~deb13u1
 None known
libheif
Debian:13
 before 1.19.8-1+deb13u1, plus listed versions
1.19.8-1
1.19.8-1+deb13u1
libheif
Debian:14
 before 1.23.1-1, plus listed versions
1.19.8-11.20.1-11.20.2-11.20.2-21.21.2-11.21.2-21.21.2-31.21.2-4
1.23.1-1
libheif_jll
Julia
 before 1.22.2000+0
1.22.2000+0
libheif
SUSE:Linux Enterprise Server 16.0
 before 1.23.0-160000.1.1
1.23.0-160000.1.1
libheif
SUSE:Linux Enterprise Server for SAP applications 16.0
 before 1.23.0-160000.1.1
1.23.0-160000.1.1
libheif
SUSE:Linux Enterprise Module for Desktop Applications 15 SP7
 before 1.23.0-150700.3.15.1
1.23.0-150700.3.15.1
libheif
SUSE:Linux Enterprise Module for Package Hub 15 SP7
 before 1.23.0-150700.3.15.1
1.23.0-150700.3.15.1
libheif
Ubuntu:24.04:LTS
 before 1.17.6-1ubuntu4.6, plus listed versions
1.16.2-2ubuntu11.17.1-1ubuntu21.17.1-1ubuntu31.17.4-1ubuntu11.17.6-1ubuntu1
Show 8 moreShow less
1.17.6-1ubuntu21.17.6-1ubuntu31.17.6-1ubuntu41.17.6-1ubuntu4.11.17.6-1ubuntu4.21.17.6-1ubuntu4.31.17.6-1ubuntu4.41.17.6-1ubuntu4.5
1.17.6-1ubuntu4.6
Show 4 moreShow less
Affected packages
PackageAffectedFixed
libheif
Ubuntu:25.10
 before 1.20.2-1ubuntu0.6, plus listed versions
1.19.7-11.19.8-11.20.2-11.20.2-1ubuntu0.11.20.2-1ubuntu0.31.20.2-1ubuntu0.41.20.2-1ubuntu0.5
1.20.2-1ubuntu0.6
libheif
Ubuntu:26.04:LTS
 before 1.21.2-3ubuntu0.3, plus listed versions
1.20.2-11.20.2-21.20.2-2build11.20.2-2build21.20.2-2ubuntu1
Show 4 moreShow less
1.21.2-11.21.2-31.21.2-3ubuntu0.11.21.2-3ubuntu0.2
1.21.2-3ubuntu0.3
libheif
openSUSE:Tumbleweed
 before 1.22.2-1.1
1.22.2-1.1
libheif
openSUSE:Leap 16.0
 before 1.23.0-160000.1.1
1.23.0-160000.1.1

History

History
WhenChangedSources
2026-11-02affected, aliases, referencesEUVD
2026-11-02createdCVE List, NVD, OSV

References

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