Medium · 5.5 CVE-2022-49318 EUVD-2022-54909GHSA-qh32-f63v-gpm9

f2fs: remove WARN_ON in f2fs_is_valid_blkaddr

Published Feb 26, 2025 · Updated Aug 15, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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.

Affected products

Vendor	Product	Affected	Fixed
Linux	Linux	4.4.172 – < 4.5, 4.9.144 – < 4.10, 4.14.86 – < 4.15, 4.19	4.5

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗

Release	Package	Fixed in	Advisory
Debian 14	linux	5.18.5-1	—
Debian 13	linux	5.18.5-1	—
Debian 12	linux	5.18.5-1	—

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu 24.04 LTS	linux-raspi-realtime	No fix yet	—
Ubuntu 22.04 LTS	linux +1	5.15.0-48.54	—
Ubuntu 22.04 LTS	linux-aws	5.15.0-1020.24	—
Ubuntu 22.04 LTS	linux-azure	5.15.0-1020.25	—
Ubuntu 22.04 LTS	linux-azure-fde	5.15.0-1024.30.1	—
Ubuntu 22.04 LTS	linux-gcp	5.15.0-1018.24	—
Ubuntu 22.04 LTS	linux-gke	5.15.0-1016.19	—
Ubuntu 22.04 LTS	linux-gkeop	5.15.0-1003.5	—
Ubuntu 22.04 LTS	linux-ibm +1	5.15.0-1015.17	—
Ubuntu 22.04 LTS	linux-intel-iotg	5.15.0-1016.21	—
Ubuntu 22.04 LTS	linux-kvm	5.15.0-1018.22	—
Ubuntu 22.04 LTS	linux-nvidia	5.15.0-1007.7	—
Ubuntu 22.04 LTS	linux-oracle	5.15.0-1018.23	—
Ubuntu 22.04 LTS	linux-riscv +32	No fix yet	—
Ubuntu 20.04 LTS	linux	5.4.0-126.142	—
Ubuntu 20.04 LTS	linux-aws	5.4.0-1085.92	—
Ubuntu 20.04 LTS	linux-aws-5.15	5.15.0-1020.24~20.04.1	—
Ubuntu 20.04 LTS	linux-azure	5.4.0-1091.96	—
Ubuntu 20.04 LTS	linux-azure-5.15	5.15.0-1020.25~20.04.1	—
Ubuntu 20.04 LTS	linux-bluefield	5.4.0-1046.51	—
Ubuntu 20.04 LTS	linux-gcp	5.4.0-1089.97	—
Ubuntu 20.04 LTS	linux-gcp-5.15	5.15.0-1018.24~20.04.1	—
Ubuntu 20.04 LTS	linux-gke +28	No fix yet	—
Ubuntu 20.04 LTS	linux-hwe-5.15 +1	5.15.0-48.54~20.04.1	—
Ubuntu 20.04 LTS	linux-ibm	5.4.0-1033.37	—
Ubuntu 20.04 LTS	linux-intel-iotg-5.15	5.15.0-1016.21~20.04.1	—
Ubuntu 20.04 LTS	linux-iot	5.4.0-1004.6	—
Ubuntu 20.04 LTS	linux-kvm	5.4.0-1075.80	—
Ubuntu 20.04 LTS	linux-oracle	5.4.0-1083.91	—
Ubuntu 20.04 LTS	linux-oracle-5.15	5.15.0-1018.23~20.04.1	—
Ubuntu 20.04 LTS	linux-raspi	5.4.0-1070.80	—
Ubuntu 20.04 LTS	linux-riscv-5.15	5.15.0-1019.22~20.04.1	—
Ubuntu 18.04 LTS	linux-aws-5.4	5.4.0-1085.92~18.04.1	—
Ubuntu 18.04 LTS	linux-azure-5.4	5.4.0-1091.96~18.04.1	—
Ubuntu 18.04 LTS	linux-gcp +14	No fix yet	—
Ubuntu 18.04 LTS	linux-gcp-5.4	5.4.0-1089.97~18.04.1	—
Ubuntu 18.04 LTS	linux-hwe-5.4	5.4.0-126.142~18.04.1	—
Ubuntu 18.04 LTS	linux-ibm-5.4	5.4.0-1033.37~18.04.1	—
Ubuntu 18.04 LTS	linux-oracle-5.4	5.4.0-1083.91~18.04.1	—
Ubuntu 18.04 LTS	linux-raspi-5.4	5.4.0-1070.80~18.04.1	—
Ubuntu 16.04 LTS	linux-hwe-edge	No fix yet	—

Show 10 more (older releases, extended support, other products)

Release	Package	Fixed in	Advisory
Ubuntu Pro Realtime 22.04 LTS	linux-realtime	5.15.0-1021.21	—
Ubuntu Pro FIPS 20.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro FIPS 18.04 LTS	linux-fips	No fix yet	—
Ubuntu Pro FIPS 16.04 LTS	linux-fips	No fix yet	—
Ubuntu Pro FIPS-updates 20.04 LTS	linux-aws-fips	5.4.0-1085.92+fips1	—
Ubuntu Pro FIPS-updates 20.04 LTS	linux-azure-fips	5.4.0-1091.96+fips1	—
Ubuntu Pro FIPS-updates 20.04 LTS	linux-fips	5.4.0-1061.69	—
Ubuntu Pro FIPS-updates 20.04 LTS	linux-gcp-fips	5.4.0-1089.97+fips1	—
Ubuntu Pro FIPS-updates 18.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro FIPS-updates 16.04 LTS	linux-fips	No fix yet	—
Ubuntu Pro 18.04 LTS	linux +5	No fix yet	—
Ubuntu Pro 16.04 LTS	linux +7	No fix yet	—
Ubuntu Pro 14.04 LTS	linux-aws +2	No fix yet	—

References