CVE - CVE-2021-47458

CVE-ID
CVE-2021-47458	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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 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:fortify_panic+0xf/0x11 ... Call Trace: ocfs2_initialize_super.isra.0.cold+0xc/0x18 [ocfs2] ocfs2_fill_super+0x359/0x19b0 [ocfs2] mount_bdev+0x185/0x1b0 legacy_get_tree+0x27/0x40 vfs_get_tree+0x25/0xb0 path_mount+0x454/0xa20 __x64_sys_mount+0x103/0x140 do_syscall_64+0x3b/0xc0 entry_SYSCALL_64_after_hwframe+0x44/0xae
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f URL:https://git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f MISC:https://git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498 URL:https://git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498 MISC:https://git.kernel.org/stable/c/4b74ddcc22ee6455946e80a9c4808801f8f8561e URL:https://git.kernel.org/stable/c/4b74ddcc22ee6455946e80a9c4808801f8f8561e MISC:https://git.kernel.org/stable/c/7623b1035ca2d17bde0f6a086ad6844a34648df1 URL:https://git.kernel.org/stable/c/7623b1035ca2d17bde0f6a086ad6844a34648df1 MISC:https://git.kernel.org/stable/c/93be0eeea14cf39235e585c8f56df3b3859deaad URL:https://git.kernel.org/stable/c/93be0eeea14cf39235e585c8f56df3b3859deaad MISC:https://git.kernel.org/stable/c/ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb URL:https://git.kernel.org/stable/c/ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb MISC:https://git.kernel.org/stable/c/b15fa9224e6e1239414525d8d556d824701849fc URL:https://git.kernel.org/stable/c/b15fa9224e6e1239414525d8d556d824701849fc MISC:https://git.kernel.org/stable/c/d3a83576378b4c904f711598dde2c5e881c4295c URL:https://git.kernel.org/stable/c/d3a83576378b4c904f711598dde2c5e881c4295c
Assigning CNA
kernel.org
Date Record Created
20240521	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240521)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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