# CVE-2021-47340: linux: In the Linux kernel, the following vulnerability has been resolved:  jfs: fix GPF in diFree  Avoid passing inode with...

CVE-2021-47340 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47340, released May 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-47340
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 21, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  jfs: fix GPF in diFree  Avoid passing inode with JFS_SBI(inode->i_sb)->ipimap == NULL to diFree()[1]. GFP will appear:  	struct inode *ipimap = JFS_SBI(ip->i_sb)->ipimap; 	struct inomap *imap = JFS_IP(ipimap)->i_imap;  JFS_IP() will return invalid pointer when ipimap == NULL  Call Trace:  diFree+0x13d/0x2dc0 fs/jfs/jfs_imap.c:853 [1]  jfs_evict_inode+0x2c9/0x370 fs/jfs/inode.c:154  evict+0x2ed/0x750 fs/inode.c:578  iput_final fs/inode.c:1654 [inline]  iput.part.0+0x3fe/0x820 fs/inode.c:1680  iput+0x58/0x70 fs/inode.c:1670

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.14.6-1 | [DEBIAN-CVE-2021-47340](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47340.md) | May 21, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.14.6-1 | [DEBIAN-CVE-2021-47340](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47340.md) | May 21, 2024 |
| Linux | linux Debian 14 | 5.14.6-1 | [DEBIAN-CVE-2021-47340](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47340.md) | May 21, 2024 |

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