In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to avoid potential memory corruption in __update_iostat_latency()
Add iotype sanity check to avoid potential memory corruption.
This is to fix the compile error below:
fs/f2fs/iostat.c:231 __update_iostat_latency() error: buffer overflow
'io_lat->peak_lat[type]' 3 <= 3
vim +228 fs/f2fs/iostat.c
211 static inline void __update_iostat_latency(struct bio_iostat_ctx
*iostat_ctx,
212 enum iostat_lat_type type)
213 {
214 unsigned long ts_diff;
215 unsigned int page_type = iostat_ctx->type;
216 struct f2fs_sb_info *sbi = iostat_ctx->sbi;
217 struct iostat_lat_info *io_lat = sbi->iostat_io_lat;
218 unsigned long flags;
219
220 if (!sbi->iostat_enable)
221 return;
222
223 ts_diff = jiffies - iostat_ctx->submit_ts;
224 if (page_type >= META_FLUSH)
^^^^^^^^^^
225 page_type = META;
226
227 spin_lock_irqsave(&sbi->iostat_lat_lock, flags);
@228 io_lat->sum_lat[type][page_type] += ts_diff;
^^^^^^^^^
Mixup between META_FLUSH and NR_PAGE_TYPE leads to memory corruption.
References
Configurations
Configuration 1 (hide)
|
History
03 Dec 2025, 16:26
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| CWE | CWE-787 | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| References | () https://git.kernel.org/stable/c/0dbbf0fb38d5ec5d4138d1aeaeb43d9217b9a592 - Patch | |
| References | () https://git.kernel.org/stable/c/20b4f3de0f3932f71b4a8daf0671e517a8d98022 - Patch | |
| References | () https://git.kernel.org/stable/c/22ddbbff116ee7dce5431feb1c0f36a507d2d68d - Patch | |
| References | () https://git.kernel.org/stable/c/aa4d726af72a21732ce120484e0b1240674a13b3 - Patch |
Information
Published : 2025-09-15 15:15
Updated : 2025-12-03 16:26
NVD link : CVE-2023-53214
Mitre link : CVE-2023-53214
CVE.ORG link : CVE-2023-53214
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-787
Out-of-bounds Write