CVE-2026-64292

A flaw was found in the Linux kernel's iommufd component. A local user can exploit this vulnerability by allocating large veventq queues, which are processed inside a spinlock. This can lead to the exhaustion of atomic memory reserves, resulting in a Denial of Service DoS condition...

SUSE CVE-2026-64291

In the Linux kernel, the following vulnerability has been resolved: iommufd: Set veventqdepth upper bound iommufdveventqalloc accepts any !0 veventqdepth from userspace, with an upper bound at U32MAX. This leaves a vulnerability where userspace can allocate excessively large queues to exhaust...

SUSE CVE-2026-64293

In the Linux kernel, the following vulnerability has been resolved: iommufd: Use sizeofhdr instead of sizeofhdr in veventq read The bound-check in iommufdveventqfopsread for the normal vEVENT path uses sizeofhdr where the surrounding code uses sizeofhdr: if !veventforlosteventsheadercur &&...

CVE-2026-64291

In the Linux kernel, the following vulnerability has been resolved: iommufd: Set veventqdepth upper bound iommufdveventqalloc accepts any !0 veventqdepth from userspace, with an upper bound at U32MAX. This leaves a vulnerability where userspace can allocate excessively large queues to exhaust...

UBUNTU-CVE-2026-64291

In the Linux kernel, the following vulnerability has been resolved: iommufd: Set veventqdepth upper bound iommufdveventqalloc accepts any !0 veventqdepth from userspace, with an upper bound at U32MAX. This leaves a vulnerability where userspace can allocate excessively large queues to exhaust...

CVE-2026-64292

In the Linux kernel, the following vulnerability has been resolved: iommufd: Move vevent memory allocation outside spinlock The veventq memory allocation happens inside the spinlock. Given its depth is decided by the user space, this leaves a vulnerability, where userspace can allocate large queu...

UBUNTU-CVE-2026-64293

In the Linux kernel, the following vulnerability has been resolved: iommufd: Use sizeofhdr instead of sizeofhdr in veventq read The bound-check in iommufdveventqfopsread for the normal vEVENT path uses sizeofhdr where the surrounding code uses sizeofhdr: if !veventforlosteventsheadercur &&...

CVE-2026-64291

In the Linux kernel, the following vulnerability has been resolved: iommufd: Set veventqdepth upper bound iommufdveventqalloc accepts any !0 veventqdepth from userspace, with an upper bound at U32MAX. This leaves a vulnerability where userspace can allocate excessively large queues to exhaust...

EUVD-2026-49005

In the Linux kernel, the following vulnerability has been resolved: iommufd: Use sizeofhdr instead of sizeofhdr in veventq read The bound-check in iommufdveventqfopsread for the normal vEVENT path uses sizeofhdr where the surrounding code uses sizeofhdr: if !veventforlosteventsheadercur &&...

CVE-2026-64293

CVE-2026-64293 affects the Linux kernel iommufd component. A 32-bit bound-check in iommufd_veventq_fops_read() uses sizeof(hdr) (size of the pointer) instead of sizeof(*hdr), causing under-count of the vEVENT header and potentially writing past the user buffer during header+data payload copy. Mul...

CVE-2026-64293 iommufd: Use sizeof(*hdr) instead of sizeof(hdr) in veventq read

In the Linux kernel, the following vulnerability has been resolved: iommufd: Use sizeofhdr instead of sizeofhdr in veventq read The bound-check in iommufdveventqfopsread for the normal vEVENT path uses sizeofhdr where the surrounding code uses sizeofhdr: if !veventforlosteventsheadercur &&...

CVE-2026-64293 iommufd: Use sizeof(*hdr) instead of sizeof(hdr) in veventq read

In the Linux kernel, the following vulnerability has been resolved: iommufd: Use sizeofhdr instead of sizeofhdr in veventq read The bound-check in iommufdveventqfopsread for the normal vEVENT path uses sizeofhdr where the surrounding code uses sizeofhdr: if !veventforlosteventsheadercur &&...

CVE-2026-64293 iommufd: Use sizeof(*hdr) instead of sizeof(hdr) in veventq read

In the Linux kernel, the following vulnerability has been resolved: iommufd: Use sizeofhdr instead of sizeofhdr in veventq read The bound-check in iommufdveventqfopsread for the normal vEVENT path uses sizeofhdr where the surrounding code uses sizeofhdr: if !veventforlosteventsheadercur &&...

CVE-2026-64293

In the Linux kernel, the following vulnerability has been resolved: iommufd: Use sizeofhdr instead of sizeofhdr in veventq read The bound-check in iommufdveventqfopsread for the normal vEVENT path uses sizeofhdr where the surrounding code uses sizeofhdr: if !veventforlosteventsheadercur &&...

CVE-2026-64291

CVE-2026-64291 affects the Linux kernel iommufd subsystem. The vulnerability stems from iommufd_veventq_alloc() accepting any non-zero veventq_depth from userspace, with an upper bound of U32_MAX, enabling a local attacker to allocate excessively large event queues and exhaust kernel memory. The ...

CVE-2026-64291 iommufd: Set veventq_depth upper bound

In the Linux kernel, the following vulnerability has been resolved: iommufd: Set veventqdepth upper bound iommufdveventqalloc accepts any !0 veventqdepth from userspace, with an upper bound at U32MAX. This leaves a vulnerability where userspace can allocate excessively large queues to exhaust...

CVE-2026-64291 iommufd: Set veventq_depth upper bound

In the Linux kernel, the following vulnerability has been resolved: iommufd: Set veventqdepth upper bound iommufdveventqalloc accepts any !0 veventqdepth from userspace, with an upper bound at U32MAX. This leaves a vulnerability where userspace can allocate excessively large queues to exhaust...

EUVD-2026-49003

In the Linux kernel, the following vulnerability has been resolved: iommufd: Set veventqdepth upper bound iommufdveventqalloc accepts any !0 veventqdepth from userspace, with an upper bound at U32MAX. This leaves a vulnerability where userspace can allocate excessively large queues to exhaust...

PT-2026-64514

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the iommufd veventq fops read function where a bound-check for the normal vEVENT path incorrectly uses sizeofhdr instead of sizeofhdr. Because hdr is a pointer,...

CVE-2026-64292: Missing Release of Memory after Effective Lifetime

In the Linux kernel, the following vulnerability has been resolved: iommufd: Move vevent memory allocation outside spinlock The veventq memory allocation happens inside the spinlock. Given its depth is decided by the user space, this leaves a vulnerability, where userspace can allocate large queu...