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 python-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-tools-develUpgrade perfUpgrade python-perfUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade kernel-livepatch-5.10.112-108.499Upgrade kernelUpgrade bpftool | Mar 27, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-libsUpgrade bpftoolUpgrade python3-perf | Jul 1, 2025 | Feb 26, 2025 |
| Redhat_linux | — | Upgrade kernel-rtNo solution existsUpgrade kernel | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-raspi-5.4Upgrade linux-azureUpgrade linux-awsUpgrade linux-iotUpgrade linux-azure-5.4Upgrade linux-hwe-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-gcp-fipsUpgrade linuxUpgrade linux-ibm-5.4Upgrade linux-ibmUpgrade linux-azure-fipsUpgrade linux-kvmUpgrade linux-aws-5.4Upgrade linux-realtimeUpgrade linux-raspiUpgrade linux-intel-iotg-5.15Upgrade linux-hwe-5.4Upgrade linux-oracleUpgrade linux-azure-5.15Upgrade linux-aws-fipsUpgrade linux-gkeUpgrade linux-oracle-5.4Upgrade linux-intel-iotgUpgrade linux-gcp-5.4Upgrade linux-lowlatencyUpgrade linux-fipsUpgrade linux-gcp | 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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