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
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
git.kernel.org/linus/b15fa9224e6e1239414525d8d556d824701849fc (5.15-rc7)
git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f
git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498
git.kernel.org/stable/c/4b74ddcc22ee6455946e80a9c4808801f8f8561e
git.kernel.org/stable/c/7623b1035ca2d17bde0f6a086ad6844a34648df1
git.kernel.org/stable/c/93be0eeea14cf39235e585c8f56df3b3859deaad
git.kernel.org/stable/c/ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb
git.kernel.org/stable/c/b15fa9224e6e1239414525d8d556d824701849fc
git.kernel.org/stable/c/d3a83576378b4c904f711598dde2c5e881c4295c
launchpad.net/bugs/cve/CVE-2021-47458
nvd.nist.gov/vuln/detail/CVE-2021-47458
security-tracker.debian.org/tracker/CVE-2021-47458
www.cve.org/CVERecord?id=CVE-2021-47458