Описание
Security update for libpng12
This update for libpng12 fixes the following issues:
Update to version 1.2.59 (jsc#PED-16191).
Security issues :
- CVE-2017-12652: missing chunk length check can lead to sensitive information disclosure, data corruption or crash (bsc#1141493).
- CVE-2026-33416: use-after-free via pointer aliasing in
png_set_tRNSandpng_set_PLTEcan lead to arbitrary code execution (bsc#1260754). - CVE-2026-34757: use-after-free in
png_set_PLTE,png_set_tRNSandpng_set_hISTcan lead to corrupted chunk data and potential heap information disclosure (bsc#1261957).
Список пакетов
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SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
SUSE Linux Enterprise Module for Basesystem 15 SP7
SUSE Linux Enterprise Server 15 SP4-LTSS
SUSE Linux Enterprise Server 15 SP5-LTSS
SUSE Linux Enterprise Server 15 SP6-LTSS
SUSE Linux Enterprise Server for SAP Applications 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15 SP5
SUSE Linux Enterprise Server for SAP Applications 15 SP6
Ссылки
- Link for SUSE-SU-2026:1716-1
- E-Mail link for SUSE-SU-2026:1716-1
- SUSE Security Ratings
- SUSE Bug 1141493
- SUSE Bug 1260754
- SUSE Bug 1261957
- SUSE CVE CVE-2017-12652 page
- SUSE CVE CVE-2026-33416 page
- SUSE CVE CVE-2026-34757 page
Описание
libpng before 1.6.32 does not properly check the length of chunks against the user limit.
Затронутые продукты
Ссылки
- CVE-2017-12652
- SUSE Bug 1141493
Описание
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.
Затронутые продукты
Ссылки
- CVE-2026-33416
- SUSE Bug 1260754
Описание
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.0.9 to before 1.6.57, passing a pointer obtained from png_get_PLTE, png_get_tRNS, or png_get_hIST back into the corresponding setter on the same png_struct/png_info pair causes the setter to read from freed memory and copy its contents into the replacement buffer. The setter frees the internal buffer before copying from the caller-supplied pointer, which now dangles. The freed region may contain stale data (producing silently corrupted chunk metadata) or data from subsequent heap allocations (leaking unrelated heap contents into the chunk struct). This vulnerability is fixed in 1.6.57.
Затронутые продукты
Ссылки
- CVE-2026-34757
- SUSE Bug 1261957