In the Linux kernel, the following vulnerability has been resolved:
f2fs: zone: fix to avoid inconsistence in between SIT and SSA
w/ below testcase, it will cause inconsistence in between SIT and SSA.
create_null_blk 512 2 1024 1024 mkfs.f2fs -m /dev/nullb0 mount /dev/nullb0 /mnt/f2fs/ touch /mnt/f2fs/file f2fs_io pinfile set /mnt/f2fs/file fallocate -l 4GiB /mnt/f2fs/file
F2FS-fs (nullb0): Inconsistent segment (0) type [1, 0] in SSA and SIT CPU: 5 UID: 0 PID: 2398 Comm: fallocate Tainted: G O 6.13.0-rc1 #84 Tainted: [O]=OOT_MODULE Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 Call Trace: <TASK> dump_stack_lvl+0xb3/0xd0 dump_stack+0x14/0x20 f2fs_handle_critical_error+0x18c/0x220 [f2fs] f2fs_stop_checkpoint+0x38/0x50 [f2fs] do_garbage_collect+0x674/0x6e0 [f2fs] f2fs_gc_range+0x12b/0x230 [f2fs] f2fs_allocate_pinning_section+0x5c/0x150 [f2fs] f2fs_expand_inode_data+0x1cc/0x3c0 [f2fs] f2fs_fallocate+0x3c3/0x410 [f2fs] vfs_fallocate+0x15f/0x4b0 __x64_sys_fallocate+0x4a/0x80 x64_sys_call+0x15e8/0x1b80 do_syscall_64+0x68/0x130 entry_SYSCALL_64_after_hwframe+0x67/0x6f RIP: 0033:0x7f9dba5197ca F2FS-fs (nullb0): Stopped filesystem due to reason: 4
The reason is f2fs_gc_range() may try to migrate block in curseg, however, its SSA block is not uptodate due to the last summary block data is still in cache of curseg.
In this patch, we add a condition in f2fs_gc_range() to check whether section is opened or not, and skip block migration for opened section.
CVSS Details
- CVSS 3.1 Base Score: 7.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Ubuntu | — | Upgrade linux-image-gkeopUpgrade linux-image-oem-22.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-raspi-6.14Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-ibm-classicUpgrade linux-image-aws-6.8Upgrade linux-image-lowlatency-64kUpgrade linux-image-nvidiaUpgrade linux-image-oracle-6.8Upgrade linux-image-virtual-6.14Upgrade linux-image-azure-lts-24.04Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-gcp-64kUpgrade linux-image-ibmUpgrade linux-image-gke-64k-6.8Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.14.0-1016-gcpUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-xilinxUpgrade linux-image-raspiUpgrade linux-image-6.14.0-32-generic-64kUpgrade linux-image-fipsUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-nvidia-64kUpgrade linux-image-genericUpgrade linux-image-gkeUpgrade linux-image-oem-22.04cUpgrade linux-image-virtual-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-gcp-fipsUpgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-6.14.0-1013-awsUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-oem-24.04Upgrade linux-image-raspi-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-oem-24.04aUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-gke-6.8Upgrade linux-image-gcp-6.14Upgrade linux-image-6.14.0-1013-aws-64kUpgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-lowlatencyUpgrade linux-image-azureUpgrade linux-image-generic-64kUpgrade linux-image-aws-64kUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-gcpUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-azure-6.14Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-raspi-realtimeUpgrade linux-image-oem-22.04aUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-generic-lpaeUpgrade linux-image-gke-64kUpgrade linux-image-azure-fips-6.8Upgrade linux-image-generic-6.14Upgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-1046-azureUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.8.0-100-genericUpgrade linux-image-6.14.0-1016-gcp-64kUpgrade linux-image-xilinx-6.8Upgrade linux-image-fips-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-64k-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-ibm-6.8Upgrade linux-image-generic-64k-6.14Upgrade linux-image-awsUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-100-fipsUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-oem-6.14Upgrade linux-image-oem-22.04bUpgrade linux-image-aws-fips-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-azure-fipsUpgrade linux-image-6.14.0-1013-oracleUpgrade linux-image-6.14.0-1012-oemUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-6.14.0-32-genericUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-aws-6.14Upgrade linux-image-6.14.0-1012-realtimeUpgrade linux-image-lowlatency-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-virtualUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-generic-6.8Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-realtimeUpgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-oracle-6.14Upgrade linux-image-kvmUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-generic-64k-6.8Upgrade linux-image-aws-64k-6.14Upgrade linux-image-6.14.0-1012-azureUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.14.0-1014-raspiUpgrade linux-image-nvidia-6.8Upgrade linux-image-gcp-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-realtime-6.14Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oem-24.04cUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-6.14.0-1013-oracle-64kUpgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-oem-24.04bUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-oracle | Jul 7, 2025 | Jul 3, 2025 |
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