CVE-2021-47458

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: ocfs2: mount fails with buffer overflow in strlen Starting with kernel 5.11 built with CONFIG_FORTIFY_SOURCE mouting an ocfs2 filesystem with either o2cb or pcmk cluster stack fails with the trace below. Problem seems to be that strings for cluster stack and cluster name are not guaranteed to be null terminated in the disk representation, while strlcpy assumes that the source string is always null terminated. This causes a read outside of the source string triggering the buffer overflow detection. detected buffer overflow i...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= c74a3bdd9b529d924d1abf986079b783dd105ace < ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb, >= c74a3bdd9b529d924d1abf986079b783dd105ace < 4b74ddcc22ee6455946e80a9c4808801f8f8561e, >= c74a3bdd9b529d924d1abf986079b783dd105ace < 232ed9752510de4436468b653d145565669c8498, >= c74a3bdd9b529d924d1abf986079b783dd105ace < 7623b1035ca2d17bde0f6a086ad6844a34648df1, >= c74a3bdd9b529d924d1abf986079b783dd105ace < d3a83576378b4c904f711598dde2c5e881c4295c, >= c74a3bdd9b529d924d1abf986079b783dd105ace < 93be0eeea14cf39235e585c8f56df3b3859deaad, >= c74a3bdd9b529d924d1abf986079b783dd105ace < 0e677ea5b7396f715a76b6b0ef441430e4c4b57f, >= c74a3bdd9b529d924d1abf986079b783dd105ace < b15fa9224e6e1239414525d8d556d824701849fc, >= 3.14, < 4.4.290, >= 4.5 < 4.9.288, >= 4.10 < 4.14.253, >= 4.15 < 4.19.214, >= 4.20 < 5.4.156, >= 5.5 < 5.10.76, >= 5.11 < 5.14.15, 5.15

Fixed versions

4.4.290, 4.9.288, 4.14.253, 4.19.214, 5.4.156, 5.10.76, 5.14.15

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-787