CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2025-26599 – Xorg: xwayland: use of uninitialized pointer in compredirectwindow()
https://notcve.org/view.php?id=CVE-2025-26599
25 Feb 2025 — An access to an uninitialized pointer flaw was found in X.Org and Xwayland. The function compCheckRedirect() may fail if it cannot allocate the backing pixmap. In that case, compRedirectWindow() will return a BadAlloc error without validating the window tree marked just before, which leaves the validated data partly initialized and the use of an uninitialized pointer later. This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obta... • https://access.redhat.com/security/cve/CVE-2025-26599 • CWE-824: Access of Uninitialized Pointer •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2025-26598 – Xorg: xwayland: out-of-bounds write in createpointerbarrierclient()
https://notcve.org/view.php?id=CVE-2025-26598
25 Feb 2025 — An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match was found. However, the code will return the last element of the list if no matching device ID is found, which can lead to out-of-bounds memory access. This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the abilit... • https://access.redhat.com/security/cve/CVE-2025-26598 • CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2025-26597 – Xorg: xwayland: buffer overflow in xkbchangetypesofkey()
https://notcve.org/view.php?id=CVE-2025-26597
25 Feb 2025 — A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a 0 group, it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is later called with a non-zero value of groups, this will cause a buffer overflow because the key actions are of the wrong size. This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the ability to execute low-privileged... • https://access.redhat.com/security/cve/CVE-2025-26597 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-122: Heap-based Buffer Overflow •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2025-26596 – Xorg: xwayland: heap overflow in xkbwritekeysyms()
https://notcve.org/view.php?id=CVE-2025-26596
25 Feb 2025 — A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms() differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow. This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the XkbSizeKeySyms function. The is... • https://access.redhat.com/security/cve/CVE-2025-26596 • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2025-26595 – Xorg: xwayland: buffer overflow in xkbvmodmasktext()
https://notcve.org/view.php?id=CVE-2025-26595
25 Feb 2025 — A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size. This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit t... • https://access.redhat.com/security/cve/CVE-2025-26595 • CWE-121: Stack-based Buffer Overflow •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2025-26594 – X.org: xwayland: use-after-free of the root cursor
https://notcve.org/view.php?id=CVE-2025-26594
25 Feb 2025 — A use-after-free flaw was found in X.Org and Xwayland. The root cursor is referenced in the X server as a global variable. If a client frees the root cursor, the internal reference points to freed memory and causes a use-after-free. This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the h... • https://access.redhat.com/security/cve/CVE-2025-26594 • CWE-416: Use After Free •
CVSS: 6.5EPSS: 0%CPEs: 16EXPL: 0CVE-2025-0690 – Grub2: read: integer overflow may lead to out-of-bounds write
https://notcve.org/view.php?id=CVE-2025-0690
24 Feb 2025 — The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub's internal critical data and secure boot bypass is not discarded as consequence. • https://access.redhat.com/security/cve/CVE-2025-0690 • CWE-787: Out-of-bounds Write •
CVSS: 6.4EPSS: 0%CPEs: 4EXPL: 0CVE-2025-0677 – Grub2: ufs: integer overflow may lead to heap based out-of-bounds write when handling symlinks
https://notcve.org/view.php?id=CVE-2025-0677
19 Feb 2025 — A flaw was found in grub2. When performing a symlink lookup, the grub's UFS module checks the inode's data size to allocate the internal buffer to read the file content, however, it fails to check if the symlink data size has overflown. When this occurs, grub_malloc() may be called with a smaller value than needed. When further reading the data from the disk into the buffer, the grub_ufs_lookup_symlink() function will write past the end of the allocated size. An attack can leverage this by crafting a malici... • https://access.redhat.com/security/cve/CVE-2025-0677 • CWE-787: Out-of-bounds Write •
CVSS: 7.6EPSS: 0%CPEs: 24EXPL: 0CVE-2025-0624 – Grub2: net: out-of-bounds write in grub_net_search_config_file()
https://notcve.org/view.php?id=CVE-2025-0624
19 Feb 2025 — A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot inf... • https://access.redhat.com/security/cve/CVE-2025-0624 • CWE-787: Out-of-bounds Write •
CVSS: 4.4EPSS: 0%CPEs: 4EXPL: 0CVE-2025-1118 – Grub2: commands/dump: the dump command is not in lockdown when secure boot is enabled
https://notcve.org/view.php?id=CVE-2025-1118
19 Feb 2025 — A flaw was found in grub2. Grub's dump command is not blocked when grub is in lockdown mode, which allows the user to read any memory information, and an attacker may leverage this in order to extract signatures, salts, and other sensitive information from the memory. • https://access.redhat.com/security/cve/CVE-2025-1118 • CWE-501: Trust Boundary Violation •