Bug 2516733 (CVE-2026-72352)

Summary: CVE-2026-72352 kernel: HID: bpf: Fix hid_bpf_get_data() range check
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in the Linux kernel's Human Interface Device (HID) Berkeley Packet Filter (BPF) component. An integer overflow, where a calculation exceeds the maximum value an integer type can store, in the hid_bpf_get_data() function's range check can occur when processing a very large size value. This allows the function to return a pointer to memory outside its intended buffer, potentially leading to out-of-bounds memory access. A local attacker could use this flaw to cause a denial of service or potentially escalate privileges.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-08-15 06:28:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

HID: bpf: Fix hid_bpf_get_data() range check

hid_bpf_get_data() returns a pointer into the HID-BPF context data when
the caller-provided offset and size fit inside ctx->allocated_size.

The current check adds rdwr_buf_size and offset before comparing the
result against ctx->allocated_size. Since both values are unsigned, a
very large size can wrap the sum below ctx->allocated_size and make the
helper return a pointer even though the requested range is not contained
in the backing buffer.

Use check_add_overflow() to reject wrapped range ends before comparing
the requested range end against ctx->allocated_size.
Comment 1 gkamathe 2026-08-19 07:22:17 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081512-CVE-2026-72352-9ba2@gregkh/T