CVE-2020-29534
Ubuntu Security Notice USN-4678-1
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.
Se detectó un problema en el kernel de Linux versiones anteriores a 5.9.3, io_uring toma una referencia non-refcounted al files_struct del proceso que envió una petición, causando que la función execve() optimice incorrectamente la función unshare_fd(), también se conoce como CID-0f2122045b94
It was discovered that the AMD Running Average Power Limit driver in the Linux kernel did not properly restrict access to power data. A local attacker could possibly use this to expose sensitive information. Jann Horn discovered that the io_uring subsystem in the Linux kernel did not properly perform reference counting in some situations. A local attacker could use this to expose sensitive information or possibly escalate privileges. Various other issues were also addressed.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-12-03 CVE Reserved
- 2020-12-03 CVE Published
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
CAPEC
References (3)
URL | Tag | Source |
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URL | Date | SRC |
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https://bugs.chromium.org/p/project-zero/issues/detail?id=2089 | 2024-08-04 |
URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.1 < 5.8.18 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.1 < 5.8.18" | - |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.9.0 < 5.9.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9.0 < 5.9.3" | - |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.10 Search vendor "Linux" for product "Linux Kernel" and version "5.10" | rc1 |
Affected
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