CVE-2020-25641
kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Se encontró un fallo en la implementación de biovecs del kernel de Linux en versiones anteriores a 5.9-rc7. Una petición de biovec de longitud cero emitida por el subsistema de bloques podría causar que el Kernel entre en un bucle infinito, causando una denegación de servicio. Este fallo permite a un atacante local con privilegios básicos emitir peticiones a un dispositivo de bloqueo, resultando en una denegación de servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema
A flaw was found in the Linux kernel’s implementation of biovecs. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-09-16 CVE Reserved
- 2020-10-06 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
References (10)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2020/10/06/9 | Mailing List |
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| https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html | Mailing List |
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| https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html | Mailing List |
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| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html | 2022-11-21 | |
| http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html | 2022-11-21 | |
| https://usn.ubuntu.com/4576-1 | 2022-11-21 | |
| https://www.kernel.org/doc/html/latest/block/biovecs.html | 2022-11-21 | |
| https://access.redhat.com/security/cve/CVE-2020-25641 | 2021-01-14 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | <= 5.8.13 Search vendor "Linux" for product "Linux Kernel" and version " <= 5.8.13" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.9.0 Search vendor "Linux" for product "Linux Kernel" and version "5.9.0" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.9.0 Search vendor "Linux" for product "Linux Kernel" and version "5.9.0" | rc1 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.9.0 Search vendor "Linux" for product "Linux Kernel" and version "5.9.0" | rc2 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.9.0 Search vendor "Linux" for product "Linux Kernel" and version "5.9.0" | rc3 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.9.0 Search vendor "Linux" for product "Linux Kernel" and version "5.9.0" | rc4 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.9.0 Search vendor "Linux" for product "Linux Kernel" and version "5.9.0" | rc5 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.9.0 Search vendor "Linux" for product "Linux Kernel" and version "5.9.0" | rc6 |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
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| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 15.1 Search vendor "Opensuse" for product "Leap" and version "15.1" | - |
Affected
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| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 15.2 Search vendor "Opensuse" for product "Leap" and version "15.2" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04" | lts |
Affected
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