CVE-2021-28972
Ubuntu Security Notice USN-4982-1
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.
En el archivo drivers/pci/hotplug/rpadlpar_sysfs.c en el kernel de Linux versiones hasta 5.11.8, el controlador RPA PCI Hotplug, presenta un desbordamiento de búfer tolerable por el usuario al escribir un nuevo nombre de dispositivo en el controlador desde el espacio de usuario, permitiendo al espacio de usuario escribir datos en el trama de la pila de kernel directamente. Esto ocurre porque add_slot_store y remove_slot_store maneja inapropiadamente la terminación drc_name "\0", también se conoce como CID-cc7a0bb058b8
Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ring buffer as was allocated. A local attacker could use this to cause a denial of service or execute arbitrary code. Manfred Paul discovered that the eBPF implementation in the Linux kernel did not properly track bounds on bitwise operations. A local attacker could use this to cause a denial of service or execute arbitrary code. Various other issues were also addressed.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-03-22 CVE Reserved
- 2021-03-22 CVE Published
- 2024-08-03 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
References (5)
URL | Tag | Source |
---|---|---|
https://security.netapp.com/advisory/ntap-20210430-0003 | Third Party Advisory |
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URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cc7a0bb058b85ea03db87169c60c7cfdd5d34678 | 2023-11-07 |
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" | < 4.4.263 Search vendor "Linux" for product "Linux Kernel" and version " < 4.4.263" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | > 4.5 <= 4.9.263 Search vendor "Linux" for product "Linux Kernel" and version " > 4.5 <= 4.9.263" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.10 < 4.14.227 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.14.227" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | > 4.15 <= 4.19.183 Search vendor "Linux" for product "Linux Kernel" and version " > 4.15 <= 4.19.183" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.20 < 5.4.108 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.108" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5.0 < 5.10.26 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5.0 < 5.10.26" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.11 < 5.11.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.11.9" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 32 Search vendor "Fedoraproject" for product "Fedora" and version "32" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
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Netapp Search vendor "Netapp" | Cloud Backup Search vendor "Netapp" for product "Cloud Backup" | - | - |
Affected
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Netapp Search vendor "Netapp" | Fas\/aff Baseboard Management Controller Search vendor "Netapp" for product "Fas\/aff Baseboard Management Controller" | - | - |
Affected
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Netapp Search vendor "Netapp" | Solidfire Baseboard Management Controller Firmware Search vendor "Netapp" for product "Solidfire Baseboard Management Controller Firmware" | - | - |
Affected
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