In the Linux kernel, the following vulnerability has been resolved:
erofs: fix buffer copy overflow of ztailpacking feature
I got some KASAN report as below:
[ 46.959738] ==================================================================
[ 46.960430] BUG: KASAN: use-after-free in z_erofs_shifted_transform+0x2bd/0x370
[ 46.960430] Read of size 4074 at addr ffff8880300c2f8e by task fssum/188
...
[ 46.960430] Call Trace:
[ 46.960430] <TASK>
[ 46.960430] dump_stack_lvl+0x41/0x5e
[ 46.960430] print_report.cold+0xb2/0x6b7
[ 46.960430] ? z_erofs_shifted_transform+0x2bd/0x370
[ 46.960430] kasan_report+0x8a/0x140
[ 46.960430] ? z_erofs_shifted_transform+0x2bd/0x370
[ 46.960430] kasan_check_range+0x14d/0x1d0
[ 46.960430] memcpy+0x20/0x60
[ 46.960430] z_erofs_shifted_transform+0x2bd/0x370
[ 46.960430] z_erofs_decompress_pcluster+0xaae/0x1080
The root cause is that the tail pcluster won't be a complete filesystem
block anymore. So if ztailpacking is used, the second part of an
uncompressed tail pcluster may not be ``rq->pageofs_out``.
CVSS
No CVSS.
References
Configurations
Configuration 1 (hide)
|
History
24 Mar 2025, 19:58
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/6b59e1907f58cf877c563dcf013159eb9f994b64 - Patch | |
| References | () https://git.kernel.org/stable/c/dcbe6803fffd387f72b48c2373b5f5ed12a5804b - Patch | |
| References | () https://git.kernel.org/stable/c/4d53a625f29074e7b8236c2c0e0922edb7608df9 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux linux Kernel
Linux |
26 Feb 2025, 07:01
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-02-26 07:01
Updated : 2025-03-24 19:58
NVD link : CVE-2022-49464
Mitre link : CVE-2022-49464
JSON object : View
Products Affected
linux
- linux_kernel
CWE
No CWE.