In the Linux kernel, the following vulnerability has been resolved:
lz4: fix LZ4_decompress_safe_partial read out of bound
When partialDecoding, it is EOF if we've either filled the output buffer or can't proceed with reading an offset for following match.
In some extreme corner cases when compressed data is suitably corrupted, UAF will occur. As reported by KASAN [1], LZ4_decompress_safe_partial may lead to read out of bound problem during decoding. lz4 upstream has fixed it [2] and this issue has been disscussed here [3] before.
current decompression routine was ported from lz4 v1.8.3, bumping lib/lz4 to v1.9.+ is certainly a huge work to be done later, so, we'd better fix it first.
[1] https://lore.kernel.org/all/[email protected]/ [2] https://github.com/lz4/lz4/commit/c5d6f8a8be3927c0bec91bcc58667a6cfad244ad# [3] https://lore.kernel.org/all/[email protected]/
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade bpftool-debuginfoUpgrade kernel-livepatch-5.10.112-108.499Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-develUpgrade python-perfUpgrade perfUpgrade python-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo | Mar 27, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-tools-libsUpgrade bpftoolUpgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-tools | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-tools | Jul 1, 2025 | Feb 26, 2025 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-gcp-5.4Upgrade linux-lowlatencyUpgrade linux-raspiUpgrade linux-intel-iotgUpgrade linux-gkeUpgrade linux-oracle-5.4Upgrade linux-fipsUpgrade linux-ibmUpgrade linux-aws-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-aws-fipsUpgrade linux-azure-5.15Upgrade linux-hwe-5.4Upgrade linux-gcpUpgrade linux-oracleUpgrade linux-realtimeUpgrade linux-kvmUpgrade linux-azure-fipsUpgrade linux-ibm-5.4Upgrade linux-gcp-fipsUpgrade linuxUpgrade linux-awsUpgrade linux-azure-5.4Upgrade linux-raspi-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-iotUpgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-bluefield | 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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