CVE-2022-49078 (GCVE-0-2022-49078)
Vulnerability from cvelistv5
Published
2025-02-26 01:54
Modified
2026-08-05 08:53
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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/000000000000830d1205cf7f0477@google.com/ [2] https://github.com/lz4/lz4/commit/c5d6f8a8be3927c0bec91bcc58667a6cfad244ad# [3] https://lore.kernel.org/all/CC666AE8-4CA4-4951-B6FB-A2EFDE3AC03B@fb.com/
References
Impacted products
Vendor Product Version
Linux Linux Version: 2209fda323e2fd2a2d0885595fd5097717f8d2aa
Version: 2209fda323e2fd2a2d0885595fd5097717f8d2aa
Version: 2209fda323e2fd2a2d0885595fd5097717f8d2aa
Version: 2209fda323e2fd2a2d0885595fd5097717f8d2aa
Version: 2209fda323e2fd2a2d0885595fd5097717f8d2aa
Version: 2209fda323e2fd2a2d0885595fd5097717f8d2aa
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