CVE-2020-25285
kernel: race condition between hugetlb sysctl handlers in mm/hugetlb.c
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A race condition between hugetlb sysctl handlers in mm/hugetlb.c in the Linux kernel before 5.8.8 could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact, aka CID-17743798d812.
Una condición de carrera entre los manejadores hugetlb sysctl en el archivo mm/hugetlb.c en el kernel de Linux versiones anteriores a 5.8.8, podría ser usada por atacantes locales para corromper la memoria, causar una desreferencia del puntero NULL o posiblemente tener otro impacto no especificado, también se conoce como CID-17743798d812
A flaw was found in the Linux kernels sysctl handling code for hugepages management. When multiple root level processes would write to modify the /proc/sys/vm/nr_hugepages file it could create a race on internal variables leading to a system crash or memory corruption.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-09-13 CVE Reserved
- 2020-09-13 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
- CWE-476: NULL Pointer Dereference
- CWE-787: Out-of-bounds Write
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html | 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 |
|
| https://security.netapp.com/advisory/ntap-20201009-0002 | Third Party Advisory |
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| https://twitter.com/grsecurity/status/1303749848898904067 | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17743798d81238ab13050e8e2833699b54e15467 | 2022-04-28 |
| URL | Date | SRC |
|---|---|---|
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.8 | 2022-04-28 | |
| https://usn.ubuntu.com/4576-1 | 2022-04-28 | |
| https://usn.ubuntu.com/4579-1 | 2022-04-28 | |
| https://access.redhat.com/security/cve/CVE-2020-25285 | 2021-05-18 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1882591 | 2021-05-18 |
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" | < 5.8.8 Search vendor "Linux" for product "Linux Kernel" and version " < 5.8.8" | - |
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" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | esm |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | esm |
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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