CVE-2026-97560EPSS p8.9%
CVE-2026-97560CVE-2026-97560
Description
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix one-byte OOB read in smb2_parse_native_symlink()
When parsing a share-root relative native symlink, memcpy copies
smb_target+1 (skipping the leading separator) but uses
strlen(smb_target)+1 as the length, reading one byte past the
allocated buffer.
This fixes the following KASAN splat when accessing an SMB symlink
with a target of '\a\b':
BUG: KASAN: slab-out-of-bounds in smb2_parse_native_symlink+0x4f5/0xca0
Read of size 5 at addr ffff88800878fe21 by task netfsfuzz-execu/1
CPU: 1 UID: 0 PID: 1 Comm: netfsfuzz-execu Tainted: G N
7.2.0-11943-g2709dd5ae32f-dirty #1 PREEMPT(lazy)
Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix,
1996)
Call Trace:
<TASK>
dump_stack_lvl+0x7b/0xa0
print_report+0xd0/0x630
kasan_report+0xe5/0x120
kasan_check_range+0x105/0x1b0
__asan_memcpy+0x23/0x60
smb2_parse_native_symlink+0x4f5/0xca0
parse_reparse_point+0x68a/0x1
Scoring
| EPSS | 0.20% probability of exploitation · percentile 8.9% · 2026-10-05T12:00:23Z |
| Last modified | 2026-10-03 |