In the Linux kernel, the following vulnerability has been resolved:
f2fs: remove WARN_ON in f2fs_is_valid_blkaddr
Syzbot triggers two WARNs in f2fs_is_valid_blkaddr and __is_bitmap_valid. For example, in f2fs_is_valid_blkaddr, if type is DATA_GENERIC_ENHANCE or DATA_GENERIC_ENHANCE_READ, it invokes WARN_ON if blkaddr is not in the right range. The call trace is as follows:
f2fs_get_node_info+0x45f/0x1070 read_node_page+0x577/0x1190 __get_node_page.part.0+0x9e/0x10e0 __get_node_page f2fs_get_node_page+0x109/0x180 do_read_inode f2fs_iget+0x2a5/0x58b0 f2fs_fill_super+0x3b39/0x7ca0
Fix these two WARNs by replacing WARN_ON with dump_stack.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linux-gkeopUpgrade linux-ibmUpgrade linux-oracle-5.15Upgrade linux-nvidiaUpgrade linuxUpgrade linux-aws-fipsUpgrade linux-ibm-5.4Upgrade linux-azure-fipsUpgrade linux-lowlatencyUpgrade linux-azure-fde-5.15Upgrade linux-gcpUpgrade linux-hwe-5.4Upgrade linux-oracleUpgrade linux-azure-5.15Upgrade linux-gcp-5.4Upgrade linux-gcp-fipsUpgrade linux-riscv-5.15Upgrade linux-azure-fdeUpgrade linux-awsUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azure-5.4Upgrade linux-aws-5.15Upgrade linux-realtimeUpgrade linux-intel-iotg-5.15Upgrade linux-oracle-5.4Upgrade linux-intel-iotgUpgrade linux-fipsUpgrade linux-gcp-5.15Upgrade linux-bluefieldUpgrade linux-iotUpgrade linux-gkeUpgrade linux-raspi-5.4Upgrade linux-raspiUpgrade linux-kvmUpgrade linux-hwe-5.15Upgrade linux-aws-5.4Upgrade linux-azure | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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