GNU glibc up to 2.42 wordexp WRDE_APPEND memory corruption

Summaryinfo

A vulnerability marked as problematic has been reported in GNU glibc up to 2.42. This issue affects the function wordexp. This manipulation of the argument WRDE_APPEND causes memory corruption. This vulnerability appears as CVE-2026-6368. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability was found in GNU glibc up to 2.42. It has been declared as problematic. Affected by this vulnerability is the function wordexp. The manipulation of the argument WRDE_APPEND with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect integrity, and availability. The summary by CVE is:

Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the interface to return invalid memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.

The advisory is shared at sourceware.org. This vulnerability is known as CVE-2026-6368 since 04/15/2026. The exploitation appears to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 2.43 eliminates this vulnerability.

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Productinfo

Type

• Software Library

Vendor

• GNU

Name

• glibc

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.35
• 2.36
• 2.37
• 2.38
• 2.39
• 2.40
• 2.41
• 2.42

License

• open-source

Website

• Vendor: https://www.gnu.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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