CVE-2021-47458

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-47458
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47458.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-47458
Related
Published
2024-05-22T07:15:10Z
Modified
2024-09-11T04:41:11.485605Z
Summary
[none]
Details

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 CONFIGFORTIFYSOURCE 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 in strlen ------------[ cut here ]------------ kernel BUG at lib/string.c:1149! invalid opcode: 0000 [#1] SMP PTI CPU: 1 PID: 910 Comm: mount.ocfs2 Not tainted 5.14.0-1-amd64 #1 Debian 5.14.6-2 RIP: 0010:fortifypanic+0xf/0x11 ... Call Trace: ocfs2initializesuper.isra.0.cold+0xc/0x18 [ocfs2] ocfs2fillsuper+0x359/0x19b0 [ocfs2] mountbdev+0x185/0x1b0 legacygettree+0x27/0x40 vfsgettree+0x25/0xb0 pathmount+0x454/0xa20 _x64sysmount+0x103/0x140 dosyscall64+0x3b/0xc0 entrySYSCALL64afterhwframe+0x44/0xae

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.84-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.14.16-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.14.16-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}