CVSS: 7.8EPSS: 0%CPEs: 35EXPL: 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: 35EXPL: 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: 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: 10.0EPSS: 0%CPEs: 5EXPL: 0CVE-2025-0838 – Heap Buffer overflow in Abseil
https://notcve.org/view.php?id=CVE-2025-0838
21 Feb 2025 — There exists a heap buffer overflow vulnerable in Abseil-cpp. The sized constructors, reserve(), and rehash() methods of absl::{flat,node}hash{set,map} did not impose an upper bound on their size argument. As a result, it was possible for a caller to pass a very large size that would cause an integer overflow when computing the size of the container's backing store, and a subsequent out-of-bounds memory write. Subsequent accesses to the container might also access out-of-bounds memory. We recommend upgradin... • https://github.com/abseil/abseil-cpp/commit/5a0e2cb5e3958dd90bb8569a2766622cb74d90c1 • CWE-190: Integer Overflow or Wraparound •
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: 6.7EPSS: 0%CPEs: 20EXPL: 0CVE-2025-0689 – Grub2: udf: heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
https://notcve.org/view.php?id=CVE-2025-0689
19 Feb 2025 — When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protecti... • https://access.redhat.com/security/cve/CVE-2025-0689 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 6.7EPSS: 0%CPEs: 20EXPL: 0CVE-2025-1125 – Grub2: fs/hfs: integer overflow may lead to heap based out-of-bounds write
https://notcve.org/view.php?id=CVE-2025-1125
19 Feb 2025 — When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result the hfsplus_open_compressed_real() function will write past of the internal buffer length. This... • https://access.redhat.com/security/cve/CVE-2025-1125 • CWE-787: Out-of-bounds Write •
CVSS: 6.4EPSS: 0%CPEs: 17EXPL: 0CVE-2025-0622 – Grub2: command/gpg: use-after-free due to hooks not being removed on module unload
https://notcve.org/view.php?id=CVE-2025-0622
18 Feb 2025 — A flaw was found in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered it was unloaded, leading to a use-after-free vulnerability. If correctly exploited, this vulnerability may result in arbitrary code execution, eventually allowing the attacker to bypass secure boot protections. This update for grub2 fixes the following issues. • https://access.redhat.com/security/cve/CVE-2025-0622 • CWE-416: Use After Free •