In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to account dirty data in __get_secs_required()
It will trigger system panic w/ testcase in [1]:
------------[ cut here ]------------ kernel BUG at fs/f2fs/segment.c:2752! RIP: 0010:new_curseg+0xc81/0x2110 Call Trace: f2fs_allocate_data_block+0x1c91/0x4540 do_write_page+0x163/0xdf0 f2fs_outplace_write_data+0x1aa/0x340 f2fs_do_write_data_page+0x797/0x2280 f2fs_write_single_data_page+0x16cd/0x2190 f2fs_write_cache_pages+0x994/0x1c80 f2fs_write_data_pages+0x9cc/0xea0 do_writepages+0x194/0x7a0 filemap_fdatawrite_wbc+0x12b/0x1a0 __filemap_fdatawrite_range+0xbb/0xf0 file_write_and_wait_range+0xa1/0x110 f2fs_do_sync_file+0x26f/0x1c50 f2fs_sync_file+0x12b/0x1d0 vfs_fsync_range+0xfa/0x230 do_fsync+0x3d/0x80 __x64_sys_fsync+0x37/0x50 x64_sys_call+0x1e88/0x20d0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e
The root cause is if checkpoint_disabling and lfs_mode are both on, it will trigger OPU for all overwritten data, it may cost more free segment than expected, so f2fs must account those data correctly to calculate cosumed free segments later, and return ENOSPC earlier to avoid run out of free segment during block allocation.
[1] https://lore.kernel.org/fstests/[email protected]/
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Jan 13, 2025 | Dec 27, 2024 |
| Ubuntu | — | Upgrade linux-image-azure-nvidiaUpgrade linux-image-gcpUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-58-lowlatencyUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-aws-lts-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-1027-azure-fdeUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-6.8.0-1023-gkeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-58-lowlatency-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-azure-fdeUpgrade linux-image-6.8.1-1020-realtimeUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-kvmUpgrade linux-image-awsUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.11.0-1015-oemUpgrade linux-image-oracle-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-oem-22.04aUpgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-ibmUpgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1010-gkeopUpgrade linux-image-virtualUpgrade linux-image-oem-22.04cUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-6.8.0-1028-gcp-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-ibm-classicUpgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.0-1026-oemUpgrade linux-image-6.8.0-1027-awsUpgrade linux-image-oem-22.04Upgrade linux-image-azureUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidiaUpgrade linux-image-gkeopUpgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-58-genericUpgrade linux-image-generic-lpaeUpgrade linux-image-genericUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-oracleUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-lowlatencyUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-oem-24.04bUpgrade linux-image-raspiUpgrade linux-image-oem-22.04dUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1026-nvidiaUpgrade linux-image-6.8.0-1026-nvidia-lowlatencyUpgrade linux-image-6.8.0-1026-nvidia-64kUpgrade linux-image-6.8.0-1027-azureUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-realtimeUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-gkeUpgrade linux-image-6.8.0-1028-gcpUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-lowlatency-64kUpgrade linux-image-oem-24.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-58-generic-64kUpgrade linux-image-6.8.0-1024-oracle-64kUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-generic-64kUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1026-nvidia-lowlatency-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1024-oracleUpgrade linux-image-6.8.0-1024-ibm | Feb 20, 2025 | Dec 27, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 9, 2025 | Dec 27, 2024 |
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