CVE-2026-99097
Last modified
CVE-2026-99097 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc_helper() tee_dyn_shm_alloc_helper() derives nr_pages from a caller-supplied size and passes it to alloc_pages_exact() without checking it. For size == 0 nr_pages is 0, and alloc_pages_exact(0) calls get_order(0), which is documented as undefined and returns BITS_PER_LONG - PAGE_SHIFT.
Description
In the Linux kernel, the following vulnerability has been resolved: tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc_helper() tee_dyn_shm_alloc_helper() derives nr_pages from a caller-supplied size and passes it to alloc_pages_exact() without checking it. For size == 0 nr_pages is 0, and alloc_pages_exact(0) calls get_order(0), which is documented as undefined and returns BITS_PER_LONG - PAGE_SHIFT. The page allocator then trips its order > MAX_PAGE_ORDER warning and fails the allocation; on a panic_on_warn kernel that ends the boot. This can be triggered by TEE_IOC_SHM_ALLOC with struct tee_ioctl_shm_alloc_data where size is 0. Reject a zero page count, as register_shm_helper() already does for the register path.
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= cf4441503e20a0c0a36e0a98dcf57de3d3844c91, < e5dc7af9c3a5373ee7a84959126e7dfa9e4ad50d; >= cf4441503e20a0c0a36e0a98dcf57de3d3844c91, < 65cb86860a80ffc6af897d53f5bd4b1733bca0ec; >= cf4441503e20a0c0a36e0a98dcf57de3d3844c91, < c2a97703359e25ec7ef8b2b0ef32fb3982add90a; >= cf4441503e20a0c0a36e0a98dcf57de3d3844c91, < b7f925fd5226deb953c8dcdc9677d3fcc2717c00 |
| Linux | Linux | 6.10 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-99097?
How severe is CVE-2026-99097?
How do I fix CVE-2026-99097?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-99091In the Linux kernel, the following vulnerability has been re…
- CVE-2026-99092In the Linux kernel, the following vulnerability has been re…
- CVE-2026-99093In the Linux kernel, the following vulnerability has been re…
- CVE-2026-99094In the Linux kernel, the following vulnerability has been re…7.5
- CVE-2026-99095In the Linux kernel, the following vulnerability has been re…
- CVE-2026-99096In the Linux kernel, the following vulnerability has been re…
- CVE-2026-99098In the Linux kernel, the following vulnerability has been re…
- CVE-2026-99099In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-9910Out of bounds memory access in ANGLE in Google Chrome prior …8.8
- CVE-2026-99100In the Linux kernel, the following vulnerability has been re…
- CVE-2026-99101In the Linux kernel, the following vulnerability has been re…
- CVE-2026-99102In the Linux kernel, the following vulnerability has been re…
Are you affected by CVE-2026-99097?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST