In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on sbi->total_valid_block_count
syzbot reported a f2fs bug as below:
------------[ cut here ]------------ kernel BUG at fs/f2fs/f2fs.h:2521! RIP: 0010:dec_valid_block_count+0x3b2/0x3c0 fs/f2fs/f2fs.h:2521 Call Trace: f2fs_truncate_data_blocks_range+0xc8c/0x11a0 fs/f2fs/file.c:695 truncate_dnode+0x417/0x740 fs/f2fs/node.c:973 truncate_nodes+0x3ec/0xf50 fs/f2fs/node.c:1014 f2fs_truncate_inode_blocks+0x8e3/0x1370 fs/f2fs/node.c:1197 f2fs_do_truncate_blocks+0x840/0x12b0 fs/f2fs/file.c:810 f2fs_truncate_blocks+0x10d/0x300 fs/f2fs/file.c:838 f2fs_truncate+0x417/0x720 fs/f2fs/file.c:888 f2fs_setattr+0xc4f/0x12f0 fs/f2fs/file.c:1112 notify_change+0xbca/0xe90 fs/attr.c:552 do_truncate+0x222/0x310 fs/open.c:65 handle_truncate fs/namei.c:3466 [inline] do_open fs/namei.c:3849 [inline] path_openat+0x2e4f/0x35d0 fs/namei.c:4004 do_filp_open+0x284/0x4e0 fs/namei.c:4031 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_creat fs/open.c:1522 [inline] __se_sys_creat fs/open.c:1516 [inline] __x64_sys_creat+0x124/0x170 fs/open.c:1516 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
The reason is: in fuzzed image, sbi->total_valid_block_count is inconsistent w/ mapped blocks indexed by inode, so, we should not trigger panic for such case, instead, let's print log and set fsck flag.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.1Upgrade linux | Jul 4, 2025 | Jul 4, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Sep 10, 2025 | Jul 3, 2025 |
| Ubuntu | — | Upgrade linux-image-gcp-6.8Upgrade linux-image-generic-6.8Upgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-lowlatency-64kUpgrade linux-image-5.15.0-156-generic-lpaeUpgrade linux-image-gkeopUpgrade linux-image-5.15.0-1092-gcpUpgrade linux-image-oem-22.04bUpgrade linux-image-oem-24.04bUpgrade linux-image-oracle-6.14Upgrade linux-image-5.15.0-156-lowlatencyUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-5.15.0-1075-gkeopUpgrade linux-image-virtualUpgrade linux-image-6.14.0-1012-azureUpgrade linux-image-fips-6.8Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-generic-64kUpgrade linux-image-genericUpgrade linux-image-azure-fips-6.8Upgrade linux-image-fips-5.15Upgrade linux-image-generic-64k-6.14Upgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-xilinxUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-ibm-6.8Upgrade linux-image-5.15.0-1045-nvidia-tegra-rtUpgrade linux-image-generic-64k-6.8Upgrade linux-image-kvm-5.15Upgrade linux-image-fipsUpgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-aws-64kUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-5.15.0-1092-awsUpgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-5.15.0-1092-gcp-fipsUpgrade linux-image-5.15.0-1092-realtimeUpgrade linux-image-6.14.0-1013-oracleUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-oem-22.04aUpgrade linux-image-6.14.0-1012-oemUpgrade linux-image-5.15.0-1096-azureUpgrade linux-image-5.15.0-1085-intel-iot-realtimeUpgrade linux-image-raspi-nolpaeUpgrade linux-image-5.15.0-1087-nvidia-lowlatencyUpgrade linux-image-oem-6.14Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-aws-lts-22.04Upgrade linux-image-azure-6.14Upgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-ibm-classicUpgrade linux-image-aws-64k-5.15Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-5.15Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.14.0-1016-gcp-64kUpgrade linux-image-ibmUpgrade linux-image-azure-lts-24.04Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-6.14.0-1016-gcpUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-5.15.0-1089-gkeUpgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-azure-lts-22.04Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-oracleUpgrade linux-image-aws-64k-6.8Upgrade linux-image-5.15.0-1086-raspiUpgrade linux-image-5.15.0-1087-nvidiaUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-5.15.0-1088-kvmUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-azure-6.8Upgrade linux-image-generic-lpaeUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.14.0-32-generic-64kUpgrade linux-image-5.15.0-1056-xilinx-zynqmpUpgrade linux-image-5.15.0-156-genericUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-azure-fipsUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-6.14.0-32-genericUpgrade linux-image-gcpUpgrade linux-image-gke-5.15Upgrade linux-image-intelUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-realtime-6.8.1Upgrade linux-image-realtimeUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-oem-24.04Upgrade linux-image-5.15.0-1034-nvidia-tegra-igx-rtUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-6.14.0-1012-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-5.15.0-1034-nvidia-tegra-igxUpgrade linux-image-generic-64k-5.15Upgrade linux-image-azureUpgrade linux-image-nvidia-6.8Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-ibm-5.15Upgrade linux-image-5.15.0-1086-ibmUpgrade linux-image-virtual-6.14Upgrade linux-image-realtime-6.14Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-oracle-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-virtual-6.8Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-gke-6.8Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-gke-64kUpgrade linux-image-aws-fips-5.15Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-156-fipsUpgrade linux-image-5.15.0-1092-aws-fipsUpgrade linux-image-6.14.0-1014-raspiUpgrade linux-image-5.15.0-156-generic-64kUpgrade linux-image-realtime-5.15Upgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-64k-6.14Upgrade linux-image-5.15.0-1045-nvidia-tegraUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-oem-22.04cUpgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-nvidia-64kUpgrade linux-image-lowlatency-6.8Upgrade linux-image-gkeop-5.15Upgrade linux-image-gkeUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-generic-6.14Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-virtual-5.15Upgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-oracle-5.15Upgrade linux-image-oem-24.04aUpgrade linux-image-azure-cvmUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-6.14.0-1013-aws-64kUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-aws-6.8Upgrade linux-image-aws-6.14Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-gcp-5.15Upgrade linux-image-intel-iotgUpgrade linux-image-oem-24.04cUpgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-nvidia-5.15Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-6.14.0-1013-oracle-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-xilinx-6.8Upgrade linux-image-azure-fips-5.15Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-gcp-6.14Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-kvmUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-gcp-fipsUpgrade linux-image-5.15.0-1087-intel-iotgUpgrade linux-image-6.14.0-1013-awsUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-5.15.0-1092-aws-64kUpgrade linux-image-5.15.0-1096-azure-fipsUpgrade linux-image-aws-fips-6.8Upgrade linux-image-awsUpgrade linux-image-5.15.0-1090-oracleUpgrade linux-image-raspi-6.8Upgrade linux-image-azure-5.15Upgrade linux-image-raspi-6.14Upgrade linux-image-raspi-5.15Upgrade linux-image-raspiUpgrade linux-image-gcp-64kUpgrade linux-image-lowlatency-5.15Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-5.15.0-156-lowlatency-64k | Jul 7, 2025 | Jul 3, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 10, 2025 | Jul 3, 2025 |
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