Description
In the Linux kernel, the following vulnerability has been resolved:
erofs: fix order >= MAX_ORDER warning due to crafted negative i_size
As syzbot reported [1], the root cause is that i_size field is a
signed type, and negative i_size is also less than EROFS_BLKSIZ.
As a consequence, it's handled as fast symlink unexpectedly.
Let's fall back to the generic path to deal with such unusual i_size.
[1] https://lore.kernel.org/r/000000000000ac8efa05e7feaa1f@google.com
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.19 | 5.4.289 |
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 | 6.0.3-1 | — |
| Debian 13 | linux | 6.0.3-1 | — |
| Debian 12 | linux | 6.0.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1014.16 | — |
| Ubuntu 24.04 LTS | linux-intel +9 | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-67.74 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1031.35 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1034.41 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1034.41.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1030.37 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1028.33 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1016.21 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1026.29 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1026.31 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1029.34 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1023.23 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1030.36 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1025.27 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-211.231 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1142.152 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1031.35~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1147.154 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1034.41~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1101.108 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1145.154 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1030.37~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-67.74~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1088.93 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1026.31~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1048.51 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1129.138 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1014.14~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1140.150 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1030.36~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1129.142 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1030.34~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1060.64 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1022.27 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1033.36 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1142.153+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1147.154+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1116.126 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1145.154+fips1 | — |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 | 5.4.0-1142.152~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-azure-5.4 | 5.4.0-1147.154~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-gcp-5.4 | 5.4.0-1145.154~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-211.231~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-ibm-5.4 | 5.4.0-1090.95~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-oracle-5.4 | 5.4.0-1140.149~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-raspi-5.4 | 5.4.0-1129.142~18.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.3.0-427.13.1.el9_4 | RHSA-2024:2394 |
| RHEL 9 | rv +64 | 5.14.0-427.13.1.el9_4 | RHSA-2024:2394 |
Advisories 2
- WID-SEC-2025-2053 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2026
- RHSA-2024:2394 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
References
- https://git.kernel.org/stable/c/17a0cdbd7b0cf0fc0d7ca4187a67f8f1c18c291f
- https://git.kernel.org/stable/c/0ab621fcdff1a58ff4de51a8590fa92a0ecd34be
- https://git.kernel.org/stable/c/acc2f40b980c61a9178b72cdedd150b829064997
- https://git.kernel.org/stable/c/b6c8330f5b0f22149957a2e4977fd0f01a9db7cd
- https://git.kernel.org/stable/c/6235fb899b25fd287d5e42635ff82196395708cc
- https://git.kernel.org/stable/c/1dd73601a1cba37a0ed5f89a8662c90191df5873