CVE-2018-6551
The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.19% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190, CWE-787
- Affected
- gnu/glibc
- Source
- cve@mitre.org
References
- https://security.netapp.com/advisory/ntap-20190404-0003/
- https://sourceware.org/bugzilla/show_bug.cgi?id=22774Issue Tracking, Mailing List, Third Party Advisory
- https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=8e448310d74b283c5cd02b9ed7fb997b47bf9b22
- https://security.netapp.com/advisory/ntap-20190404-0003/
- https://sourceware.org/bugzilla/show_bug.cgi?id=22774Issue Tracking, Mailing List, Third Party Advisory
- https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=8e448310d74b283c5cd02b9ed7fb997b47bf9b22
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.