cve/2024/CVE-2024-49900.md

### [CVE-2024-49900](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49900)
![](https://img.shields.io/static/v1?label=Product&message=Linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=blue)

### Description

In the Linux kernel, the following vulnerability has been resolved:jfs: Fix uninit-value access of new_ea in ea_buffersyzbot reports that lzo1x_1_do_compress is using uninit-value:=====================================================BUG: KMSAN: uninit-value in lzo1x_1_do_compress+0x19f9/0x2510 lib/lzo/lzo1x_compress.c:178...Uninit was stored to memory at: ea_put fs/jfs/xattr.c:639 [inline]...Local variable ea_buf created at: __jfs_setxattr+0x5d/0x1ae0 fs/jfs/xattr.c:662 __jfs_xattr_set+0xe6/0x1f0 fs/jfs/xattr.c:934=====================================================The reason is ea_buf->new_ea is not initialized properly.Fix this by using memset to empty its content at the beginningin ea_get().

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/w4zu/Debian_security