CVSS: 7.8EPSS: 0%CPEs: 35EXPL: 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: 35EXPL: 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: 35EXPL: 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: 7.6EPSS: 1%CPEs: 27EXPL: 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: 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
19 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. This update for grub2 fi... • https://access.redhat.com/security/cve/CVE-2025-0690 • CWE-787: Out-of-bounds Write •
CVSS: 4.1EPSS: 0%CPEs: 16EXPL: 0CVE-2024-45778 – Grub2: fs/bfs: integer overflow in the bfs parser.
https://notcve.org/view.php?id=CVE-2024-45778
19 Feb 2025 — A stack overflow flaw was found when reading a BFS file system. A crafted BFS filesystem may lead to an uncontrolled loop, causing grub2 to crash. This update for grub2 fixes the following issues. Fixed strcpy overflow in ufs. Fixed a heap-based buffer overflow in hfs. • https://access.redhat.com/security/cve/CVE-2024-45778 • CWE-190: Integer Overflow or Wraparound •
CVSS: 6.0EPSS: 0%CPEs: 18EXPL: 0CVE-2024-45779 – Grub2: fs/bfs: integer overflow leads to heap oob read in the bfs parser
https://notcve.org/view.php?id=CVE-2024-45779
19 Feb 2025 — An integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an integer overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash. This update for grub2 fixes the following issues. • https://access.redhat.com/security/cve/CVE-2024-45779 • CWE-125: Out-of-bounds Read CWE-190: Integer Overflow or Wraparound •
CVSS: 6.7EPSS: 0%CPEs: 16EXPL: 0CVE-2024-45780 – Grub2: fs/tar: integer overflow causes heap oob write
https://notcve.org/view.php?id=CVE-2024-45780
19 Feb 2025 — A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap out-of-bounds write. This flaw eventually allows an attacker to circumvent secure boot protections. • https://access.redhat.com/security/cve/CVE-2024-45780 • CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 19EXPL: 0CVE-2024-45782 – Grub2: fs/hfs: strcpy() using the volume name (fs/hfs.c:382)
https://notcve.org/view.php?id=CVE-2024-45782
19 Feb 2025 — A flaw was found in the HFS filesystem. When reading an HFS volume's name at grub_fs_mount(), the HFS filesystem driver performs a strcpy() using the user-provided volume name as input without properly validating the volume name's length. This issue may read to a heap-based out-of-bounds writer, impacting grub's sensitive data integrity and eventually leading to a secure boot protection bypass. This update for grub2 fixes the following issues. Fixed strcpy overflow in ufs. • https://access.redhat.com/security/cve/CVE-2024-45782 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 19EXPL: 0CVE-2025-0678 – Grub2: squash4: integer overflow may lead to heap based out-of-bounds write when reading data
https://notcve.org/view.php?id=CVE-2025-0678
19 Feb 2025 — A flaw was found in grub2. When reading data from a squash4 filesystem, grub's squash4 fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciously crafted filesystem may lead some of those buffer size calculations to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result, the direct_read() will perform a heap based out-of-bounds write during d... • https://access.redhat.com/security/cve/CVE-2025-0678 • CWE-190: Integer Overflow or Wraparound CWE-787: Out-of-bounds Write •