# CVE-2025-23130: linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to avoid panic once fallocation fails...

CVE-2025-23130 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-23130, released April 16, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-23130
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 16, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to avoid panic once fallocation fails for pinfile  syzbot reports a f2fs bug as below:  ------------[ cut here ]------------ kernel BUG at fs/f2fs/segment.c:2746! CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 RIP: 0010:get_new_segment fs/f2fs/segment.c:2746 [inline] RIP: 0010:new_curseg+0x1f52/0x1f70 fs/f2fs/segment.c:2876 Call Trace:  <TASK>  __allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3210  f2fs_allocate_new_section fs/f2fs/segment.c:3224 [inline]  f2fs_allocate_pinning_section+0xfa/0x4e0 fs/f2fs/segment.c:3238  f2fs_expand_inode_data+0x696/0xca0 fs/f2fs/file.c:1830  f2fs_fallocate+0x537/0xa10 fs/f2fs/file.c:1940  vfs_fallocate+0x569/0x6e0 fs/open.c:327  do_vfs_ioctl+0x258c/0x2e40 fs/ioctl.c:885  __do_sys_ioctl fs/ioctl.c:904 [inline]  __se_sys_ioctl+0x80/0x170 fs/ioctl.c:892  do_syscall_x64 arch/x86/entry/common.c:52 [inline]  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83  entry_SYSCALL_64_after_hwframe+0x77/0x7f  Concurrent pinfile allocation may run out of free section, result in panic in get_new_segment(), let's expand pin_sem lock coverage to include f2fs_gc(), so that we can make sure to reclaim enough free space for following allocation.  In addition, do below changes to enhance error path handling: - call f2fs_bug_on() only in non-pinfile allocation path in get_new_segment(). - call reset_curseg_fields() to reset all fields of curseg in new_curseg()

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.57-1 | [DEBIAN-CVE-2025-23130](https://patchblox.com/security/data/fix/linux/debian-cve-2025-23130.md) | Apr 16, 2025 |
| Linux | linux Debian 14 | 6.16.3-1 | [DEBIAN-CVE-2025-23130](https://patchblox.com/security/data/fix/linux/debian-cve-2025-23130.md) | Apr 16, 2025 |

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