CVE-2023-3338-DECPwn

DECPwn Practicing different Linux kernel exploitation techniques with my DECnet vulnerability and null page mapping enabled. Scenarios Everything disabled : qemu-system-x8664 -append "nosmap nosmep nopti nokaslr" Code execution is redirected to the output function in userland, which invokes...

CVE-2021-47463

In the Linux kernel, the following vulnerability has been resolved: mm/secretmem: fix NULL page-mapping dereference in pageissecretmem Check for a NULL page-mapping before dereferencing the mapping in pageissecretmem, as the page's mapping can be nullified while gup is running, e.g. by reclaim or...

CVE-2021-47463

In the Linux kernel, the following vulnerability has been resolved: mm/secretmem: fix NULL page-mapping dereference in pageissecretmem Check for a NULL page-mapping before dereferencing the mapping in pageissecretmem, as the page's mapping can be nullified while gup is running, e.g. by reclaim or...

CVE-2021-47463 mm/secretmem: fix NULL page->mapping dereference in page_is_secretmem()

In the Linux kernel, the following vulnerability has been resolved: mm/secretmem: fix NULL page-mapping dereference in pageissecretmem Check for a NULL page-mapping before dereferencing the mapping in pageissecretmem, as the page's mapping can be nullified while gup is running, e.g. by reclaim or...

PT-2021-26575

Name of the Vulnerable Software and Affected Versions Linux Kernel versions v5.14 through v5.14.14 Description A potential security issue exists in the Linux Kernel, related to a NULL page-mapping dereference in the page is secretmem function. The actual impact and attack plausibility have not ye...

kernel: lack of check for mmap minimum address in expand_downwards in mm/mmap.c leads to NULL pointer dereferences exploit on non-SMAP platforms

A flaw was found in mmap in the Linux kernel allowing the process to map a null page. This allows attackers to abuse this mechanism to turn null pointer dereferences into workable exploits...

kernel: lack of check for mmap minimum address in expand_downwards in mm/mmap.c leads to NULL pointer dereferences exploit on non-SMAP platforms

A flaw was found in mmap in the Linux kernel allowing the process to map a null page. This allows attackers to abuse this mechanism to turn null pointer dereferences into workable exploits...

EulerOS Virtualization 2.5.3 : kernel (EulerOS-SA-2019-1259)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in cancangwrcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN frame modification rules allo...

win32k Desktop and Clipboard - Null Pointer Dereference

win32k Desktop and Clipboard - Null Pointer Dereference Source: https://code.google.com/p/google-security-research/issues/detail?id=534 The attached PoC triggers a null pointer condition on Windows 7 32-bit, which can potentially be exploited on versions of Windows that allow mapping the null pag...