CVE-2021-47458
See a problem?- 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
-
- https://git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f
- https://git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498
- https://git.kernel.org/stable/c/4b74ddcc22ee6455946e80a9c4808801f8f8561e
- https://git.kernel.org/stable/c/7623b1035ca2d17bde0f6a086ad6844a34648df1
- https://git.kernel.org/stable/c/93be0eeea14cf39235e585c8f56df3b3859deaad
- https://git.kernel.org/stable/c/ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb
- https://git.kernel.org/stable/c/b15fa9224e6e1239414525d8d556d824701849fc
- https://git.kernel.org/stable/c/d3a83576378b4c904f711598dde2c5e881c4295c
- https://security-tracker.debian.org/tracker/CVE-2021-47458
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source