In the Linux kernel, the following vulnerability has been resolved:
erofs/zmap.c: Fix incorrect offset calculation
Effective offset to add to length was being incorrectly calculated, which resulted in iomap->length being set to 0, triggering a WARN_ON in iomap_iter_done().
Fix that, and describe it in comments.
This was reported as a crash by syzbot under an issue about a warning encountered in iomap_iter_done(), but unrelated to erofs.
C reproducer: https://syzkaller.appspot.com/text?tag=ReproC&x=1037a6b2880000 Kernel config: https://syzkaller.appspot.com/text?tag=KernelConfig&x=e2021a61197ebe02 Dashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6
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 | Mar 31, 2025 | Mar 27, 2025 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | Jul 9, 2025 | Mar 27, 2025 |
| Ubuntu | — | Upgrade linux-bluefieldUpgrade linux-intel-iot-realtimeUpgrade linux-nvidia-tegra-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-gcpUpgrade linuxUpgrade linux-awsUpgrade linux-gkeUpgrade linux-aws-5.15Upgrade linux-gcp-5.15Upgrade linux-intel-iotgUpgrade linux-raspiUpgrade linux-azure-5.15Upgrade linux-lowlatencyUpgrade linux-hwe-5.15Upgrade linux-gkeopUpgrade linux-riscv-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-nvidiaUpgrade linux-oracleUpgrade linux-azure-fde-5.15Upgrade linux-azureUpgrade linux-oracle-5.15Upgrade linux-kvmUpgrade linux-ibmUpgrade linux-realtime | Apr 1, 2025 | Mar 27, 2025 |
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