CVE-2022-49078 (GCVE-0-2022-49078)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2025-09-03 12:58
VLAI?
Title
lz4: fix LZ4_decompress_safe_partial read out of bound
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/
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2209fda323e2fd2a2d0885595fd5097717f8d2aa , < 73953dfa9d50e5c9fe98ee13fd1d3427aa12a0a3 (git)
Affected: 2209fda323e2fd2a2d0885595fd5097717f8d2aa , < 6adc01a7aa37445dafe8846faa0610a86029b253 (git)
Affected: 2209fda323e2fd2a2d0885595fd5097717f8d2aa , < 9fb8bc6cfc58773ce95414e11c9ccc8fc6ac4927 (git)
Affected: 2209fda323e2fd2a2d0885595fd5097717f8d2aa , < e64dbe97c05c769525cbca099ddbd22485630235 (git)
Affected: 2209fda323e2fd2a2d0885595fd5097717f8d2aa , < 467d5e200ab4486b744fe1776154a43d1aa22d4b (git)
Affected: 2209fda323e2fd2a2d0885595fd5097717f8d2aa , < eafc0a02391b7b36617b36c97c4b5d6832cf5e24 (git)
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    Linux Linux Affected: 4.20
Unaffected: 0 , < 4.20 (semver)
Unaffected: 5.4.189 , ≤ 5.4.* (semver)
Unaffected: 5.10.111 , ≤ 5.10.* (semver)
Unaffected: 5.15.34 , ≤ 5.15.* (semver)
Unaffected: 5.16.20 , ≤ 5.16.* (semver)
Unaffected: 5.17.3 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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