By weakness (CWE)

CWE-908: related vulnerabilities

CVEs classified under CWE-908. Understanding the weakness class helps prioritize systemic fixes over one-off patches.

5 published vulnerabilities

• CVE-2026-46132MEDIUM 5.5

  CVE-2026-46132 is a kernel memory leak in the Linux networking subsystem that allows unprivileged local users to read up to 26 bytes of uninitialized kernel stack memory per virtual function (VF) per request. The vulnerability exists in the rtnetlink interface handler that reports virtual NIC configuration. When a user requests virtual function information, the kernel fails to zero-initialize a buffer before partially filling it with MAC broadcast data, leaving residual stack contents exposed to userspace. An attacker needs only basic local network namespace access to trigger repeated information leaks.

• CVE-2026-46139MEDIUM 5.5

  A flaw in the Linux kernel's SMB client code leaves a security descriptor buffer partially uninitialized when building access control lists. Specifically, a 2-byte reserved field in the ACL structure—which must be zero according to the SMB protocol specification—is left containing whatever garbage data happened to be in that heap memory. When Samba or other SMB servers validate the descriptor, they reject it if those bytes are non-zero, causing file permission operations like chmod to fail with an invalid argument error. The fix is straightforward: replace the memory allocation function with one that zeroes the buffer before use.

• CVE-2026-46167MEDIUM 5.5

  A flaw in the Linux kernel's USB printer driver (usblp) allows uninitialized kernel memory to leak to user-space applications through the LPGETSTATUS ioctl command. When a USB printer responds with fewer bytes than expected, the driver fails to initialize the response buffer properly, potentially exposing stale heap memory to callers. This can occur even with standard-behaving printers; the vulnerability is particularly concerning in multi-user environments where one user's application could inadvertently receive residual kernel memory from prior operations.

• CVE-2026-46169MEDIUM 5.5

  CVE-2026-46169 is a memory initialization bug in the Linux kernel's HFS+ filesystem driver. When mounting a corrupted HFS+ filesystem, the kernel may read incomplete catalog records and fail to detect that the data is truncated. This leaves portions of a kernel data structure uninitialized. Later, when the filesystem code attempts to process the incomplete record—such as performing case-insensitive string comparison—it uses the uninitialized memory as array indices, triggering a kernel warning. An unprivileged local attacker with the ability to mount a crafted filesystem image could trigger this condition, potentially causing a denial of service or information disclosure.

• CVE-2026-26825MEDIUM 5.3

  A use-of-uninitialized memory vulnerability in libxls 1.6.3 allows attackers to craft malformed XLS files that trigger memory safety issues during file parsing. When the library processes these files, uninitialized heap memory from the OLE (Object Linking and Embedding) layer may be read, leading to unpredictable behavior, incorrect file interpretation, or disclosure of sensitive data from memory. This does not require authentication and affects any application using the vulnerable library to open untrusted XLS files.