CVE-2020-8835 (GCVE-0-2020-8835)

Vulnerability from cvelistv5 – Published: 2020-04-02 18:00 – Updated: 2024-09-17 02:15
VLAI?
Title
Linux kernel bpf verifier vulnerability
Summary
In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780)
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
Impacted products
Vendor Product Version
Linux kernel Linux kernel Affected: 5.6-stable , < 5.6.1 (custom)
Affected: 5.5-stable , < 5.5.14 (custom)
Affected: 5.4.7 , < 5.4-stable* (custom)
Create a notification for this product.
Credits
Manfred Paul Anatoly Trosinenko
Show details on NVD website
To clipboard 

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  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • 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.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.



Detection rules are retrieved from Rulezet.