OESA-2026-1852

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1852
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-1852.json
JSON Data
https://api.test.osv.dev/v1/vulns/OESA-2026-1852
Upstream
Published
2026-04-11T14:03:46Z
Modified
2026-04-11T14:18:51.104128Z
Summary
libpng security update
Details

The libpng package contains libraries used by other programs for reading and writing PNG format files. The PNG format was designed as a replacement for GIF and, to a lesser extent, TIFF, with many improvements and extensions and lack of patent problems.

Security Fix(es):

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. In versions 1.2.1 through 1.6.55, png_set_tRNS and png_set_PLTE each alias a heap-allocated buffer between png_struct and png_info, sharing a single allocation across two structs with independent lifetimes. The trans_alpha aliasing has been present since at least libpng 1.0, and the palette aliasing since at least 1.2.1. Both affect all prior release lines png_set_tRNS sets png_ptr->trans_alpha = info_ptr->trans_alpha (256-byte buffer) and png_set_PLTE sets info_ptr->palette = png_ptr->palette (768-byte buffer). In both cases, calling png_free_data (with PNG_FREE_TRNS or PNG_FREE_PLTE) frees the buffer through info_ptr while the corresponding png_ptr pointer remains dangling. Subsequent row-transform functions dereference and, in some code paths, write to the freed memory. A second call to png_set_tRNS or png_set_PLTE has the same effect, because both functions call png_free_data internally before reallocating the info_ptr buffer. Version 1.6.56 fixes the issue.(CVE-2026-33416)

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. In versions 1.6.36 through 1.6.55, an out-of-bounds read and write exists in libpng's ARM/AArch64 Neon-optimized palette expansion path. When expanding 8-bit paletted rows to RGB or RGBA, the Neon loop processes a final partial chunk without verifying that enough input pixels remain. Because the implementation works backward from the end of the row, the final iteration dereferences pointers before the start of the row buffer (OOB read) and writes expanded pixel data to the same underflowed positions (OOB write). This is reachable via normal decoding of attacker-controlled PNG input if Neon is enabled. Version 1.6.56 fixes the issue.(CVE-2026-33636)

Database specific 
{
    "severity": "High"
}
References

Affected packages

openEuler:20.03-LTS-SP4
libpng

Package

Name
libpng
Purl
pkg:rpm/openEuler/libpng&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.37-7.oe2003sp4

Ecosystem specific 

{
    "x86_64": [
        "libpng-1.6.37-7.oe2003sp4.x86_64.rpm",
        "libpng-debuginfo-1.6.37-7.oe2003sp4.x86_64.rpm",
        "libpng-debugsource-1.6.37-7.oe2003sp4.x86_64.rpm",
        "libpng-devel-1.6.37-7.oe2003sp4.x86_64.rpm",
        "libpng-help-1.6.37-7.oe2003sp4.x86_64.rpm"
    ],
    "aarch64": [
        "libpng-1.6.37-7.oe2003sp4.aarch64.rpm",
        "libpng-debuginfo-1.6.37-7.oe2003sp4.aarch64.rpm",
        "libpng-debugsource-1.6.37-7.oe2003sp4.aarch64.rpm",
        "libpng-devel-1.6.37-7.oe2003sp4.aarch64.rpm",
        "libpng-help-1.6.37-7.oe2003sp4.aarch64.rpm"
    ],
    "src": [
        "libpng-1.6.37-7.oe2003sp4.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1852.json"
openEuler:22.03-LTS-SP4
libpng

Package

Name
libpng
Purl
pkg:rpm/openEuler/libpng&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.38-8.oe2203sp4

Ecosystem specific 

{
    "x86_64": [
        "libpng-1.6.38-8.oe2203sp4.x86_64.rpm",
        "libpng-debuginfo-1.6.38-8.oe2203sp4.x86_64.rpm",
        "libpng-debugsource-1.6.38-8.oe2203sp4.x86_64.rpm",
        "libpng-devel-1.6.38-8.oe2203sp4.x86_64.rpm",
        "libpng-help-1.6.38-8.oe2203sp4.x86_64.rpm",
        "libpng-static-1.6.38-8.oe2203sp4.x86_64.rpm",
        "libpng-tools-1.6.38-8.oe2203sp4.x86_64.rpm"
    ],
    "aarch64": [
        "libpng-1.6.38-8.oe2203sp4.aarch64.rpm",
        "libpng-debuginfo-1.6.38-8.oe2203sp4.aarch64.rpm",
        "libpng-debugsource-1.6.38-8.oe2203sp4.aarch64.rpm",
        "libpng-devel-1.6.38-8.oe2203sp4.aarch64.rpm",
        "libpng-help-1.6.38-8.oe2203sp4.aarch64.rpm",
        "libpng-static-1.6.38-8.oe2203sp4.aarch64.rpm",
        "libpng-tools-1.6.38-8.oe2203sp4.aarch64.rpm"
    ],
    "src": [
        "libpng-1.6.38-8.oe2203sp4.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1852.json"
openEuler:24.03-LTS
libpng

Package

Name
libpng
Purl
pkg:rpm/openEuler/libpng&distro=openEuler-24.03-LTS

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.40-8.oe2403sp1

Ecosystem specific 

{
    "x86_64": [
        "libpng-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-static-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-static-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-1.6.40-8.oe2403.x86_64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403.x86_64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403.x86_64.rpm",
        "libpng-devel-1.6.40-8.oe2403.x86_64.rpm",
        "libpng-static-1.6.40-8.oe2403.x86_64.rpm",
        "libpng-tools-1.6.40-8.oe2403.x86_64.rpm",
        "libpng-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-static-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp1.x86_64.rpm"
    ],
    "aarch64": [
        "libpng-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-static-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-static-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-1.6.40-8.oe2403.aarch64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403.aarch64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403.aarch64.rpm",
        "libpng-devel-1.6.40-8.oe2403.aarch64.rpm",
        "libpng-static-1.6.40-8.oe2403.aarch64.rpm",
        "libpng-tools-1.6.40-8.oe2403.aarch64.rpm",
        "libpng-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-static-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp1.aarch64.rpm"
    ],
    "noarch": [
        "libpng-help-1.6.40-8.oe2403sp2.noarch.rpm",
        "libpng-help-1.6.40-8.oe2403sp3.noarch.rpm",
        "libpng-help-1.6.40-8.oe2403.noarch.rpm",
        "libpng-help-1.6.40-8.oe2403sp1.noarch.rpm"
    ],
    "src": [
        "libpng-1.6.40-8.oe2403sp2.src.rpm",
        "libpng-1.6.40-8.oe2403sp3.src.rpm",
        "libpng-1.6.40-8.oe2403.src.rpm",
        "libpng-1.6.40-8.oe2403sp1.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1852.json"
openEuler:24.03-LTS-SP1
libpng

Package

Name
libpng
Purl
pkg:rpm/openEuler/libpng&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.40-8.oe2403sp1

Ecosystem specific 

{
    "x86_64": [
        "libpng-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-static-1.6.40-8.oe2403sp1.x86_64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp1.x86_64.rpm"
    ],
    "aarch64": [
        "libpng-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-static-1.6.40-8.oe2403sp1.aarch64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp1.aarch64.rpm"
    ],
    "noarch": [
        "libpng-help-1.6.40-8.oe2403sp1.noarch.rpm"
    ],
    "src": [
        "libpng-1.6.40-8.oe2403sp1.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1852.json"
openEuler:24.03-LTS-SP2
libpng

Package

Name
libpng
Purl
pkg:rpm/openEuler/libpng&distro=openEuler-24.03-LTS-SP2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.40-8.oe2403sp2

Ecosystem specific 

{
    "x86_64": [
        "libpng-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-static-1.6.40-8.oe2403sp2.x86_64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp2.x86_64.rpm"
    ],
    "aarch64": [
        "libpng-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-static-1.6.40-8.oe2403sp2.aarch64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp2.aarch64.rpm"
    ],
    "noarch": [
        "libpng-help-1.6.40-8.oe2403sp2.noarch.rpm"
    ],
    "src": [
        "libpng-1.6.40-8.oe2403sp2.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1852.json"
openEuler:24.03-LTS-SP3
libpng

Package

Name
libpng
Purl
pkg:rpm/openEuler/libpng&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.40-8.oe2403sp3

Ecosystem specific 

{
    "x86_64": [
        "libpng-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-static-1.6.40-8.oe2403sp3.x86_64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp3.x86_64.rpm"
    ],
    "aarch64": [
        "libpng-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-debuginfo-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-debugsource-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-devel-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-static-1.6.40-8.oe2403sp3.aarch64.rpm",
        "libpng-tools-1.6.40-8.oe2403sp3.aarch64.rpm"
    ],
    "noarch": [
        "libpng-help-1.6.40-8.oe2403sp3.noarch.rpm"
    ],
    "src": [
        "libpng-1.6.40-8.oe2403sp3.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1852.json"