Answer in brief
CVE-2026-74584 records a High severity (CVSS 7.1) vulnerability in RDMA/bnxt_re: zero shared page before exposing to userspace. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1ac5a404797523cedaf424a3aaa3cf8f9548dff8 <53c97e9882f4e747b4ac31b211317c2eba541af9 || >=1ac5a404797523cedaf424a3aaa3cf8f9548dff8 <9896bdfd21d918e9f26a52bc6109cc77970ee0b1 || >=1ac5a404797523cedaf424a3aaa3cf8f9548dff8 <9128c2411b83a64c0a69d2ff059c741bde25a9cc || >=1ac5a404797523cedaf424a3aaa3cf8f9548dff8 <c19b360fa10c521c0b681875cdaa51545d45a491 || >=1ac5a404797523cedaf424a3aaa3cf8f9548dff8 <a3ed2daab02b2a706e882ad31b5c3c4f33cb5bb1 || >=1ac5a404797523cedaf424a3aaa3cf8f9548dff8 <e2b143df29003d2704b51f62e9297006953dbacb || >=1ac5a404797523cedaf424a3aaa3cf8f9548dff8 <c75f8ce4baa29ae57fe615c6a2c5101f59b8b89a || >=1ac5a404797523cedaf424a3aaa3cf8f9548dff8 <f6b079629becfa977f9c51fe53ad2e6dcc55ef44 | 53c97e9882f4e747b4ac31b211317c2eba541af9, 9896bdfd21d918e9f26a52bc6109cc77970ee0b1, 9128c2411b83a64c0a69d2ff059c741bde25a9cc, c19b360fa10c521c0b681875cdaa51545d45a491, a3ed2daab02b2a706e882ad31b5c3c4f33cb5bb1, e2b143df29003d2704b51f62e9297006953dbacb, c75f8ce4baa29ae57fe615c6a2c5101f59b8b89a, f6b079629becfa977f9c51fe53ad2e6dcc55ef44 |
| Linux/Linuxgeneric | 4.11 | Not reported |
Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 22, 2026
In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: zero shared page before exposing to userspace bnxt_re_alloc_ucontext() allocates uctx->shpg via __get_free_page(GFP_KERNEL). The buddy allocator does not zero pages without __GFP_ZERO, so the page contains stale kernel data from whatever object most recently freed it. The page is then mapped into userspace via vm_insert_page() under BNXT_RE_MMAP_SH_PAGE in bnxt_re_mmap(). The driver only ever writes 4 bytes (a u32 AVID) at offset BNXT_RE_AVID_OFFT (0x10) inside bnxt_re_create_ah(); the remaining 4092 bytes of the page are exposed to userspace unsanitised, leaking kernel memory contents. Any user with access to /dev/infiniband/uverbsX on a host with a bnxt_re device (typically rdma group membership) can read this data via a single mmap() at pgoff 0 after IB_USER_VERBS_CMD_GET_CONTEXT. Other shared pages in the same file already use get_zeroed_page() correctly: drivers/infiniband/hw/bnxt_re/ib_verbs.c srq->uctx_srq_page = (void *)get_zeroed_page(GFP_KERNEL); cq->uctx_cq_page = (void *)get_zeroed_page(GFP_KERNEL); uctx->shpg is the only outlier. Bring it in line with the existing convention by switching to get_zeroed_page().
Quoted source text, attributed separately from HOL analysis.