Описание
ELSA-2026-88247: expat security update (IMPORTANT)
[2.5.0-6.7]
- CVE-2026-102633 expat: expat: Denial of Service via integer overflow in expat_realloc
- Resolves: RHEL-272833
[2.5.0-6.6]
- CVE-2026-77214 expat: expat: Information disclosure via heap buffer over-read in XML_ParseBuffer over-read in XML_ParseBuffer
- Resolves: RHEL-277510
Обновленные пакеты
Oracle Linux 9
Oracle Linux aarch64
expat
2.5.0-6.el9_8.7
expat-devel
2.5.0-6.el9_8.7
Oracle Linux x86_64
expat
2.5.0-6.el9_8.7
expat-devel
2.5.0-6.el9_8.7
Связанные CVE
Связанные уязвимости
libexpat before commit 13c5f63 contains a heap buffer over-read vulnerability in xmlparse.c. XML_ParseBuffer advances the parse buffer end with parser->m_bufferEnd += len using a caller-supplied length that is not validated against the allocated buffer size, so repeated XML_ParseBuffer calls move m_bufferEnd past the end of the heap allocation and subsequent parsing reads out of bounds. Reaching this path requires a parse buffer to already be present; otherwise XML_ParseBuffer returns XML_ERROR_NO_BUFFER. A buffer is present after a prior call to XML_GetBuffer, either directly (the common case) or indirectly through a prior XML_Parse call that allocates the buffer internally. The over-read discloses adjacent heap memory to the calling application, recovering heap pointers, libc function pointers, and code pointers sufficient to defeat ASLR and build further exploitation primitives.
libexpat before commit 13c5f63 contains a heap buffer over-read vulnerability in xmlparse.c. XML_ParseBuffer advances the parse buffer end with parser->m_bufferEnd += len using a caller-supplied length that is not validated against the allocated buffer size, so repeated XML_ParseBuffer calls move m_bufferEnd past the end of the heap allocation and subsequent parsing reads out of bounds. Reaching this path requires a parse buffer to already be present; otherwise XML_ParseBuffer returns XML_ERROR_NO_BUFFER. A buffer is present after a prior call to XML_GetBuffer, either directly (the common case) or indirectly through a prior XML_Parse call that allocates the buffer internally. The over-read discloses adjacent heap memory to the calling application, recovering heap pointers, libc function pointers, and code pointers sufficient to defeat ASLR and build further exploitation primitives.