CVE-2026-64565
CVE CVE-2026-64565EUVD EUVD-2026-52606Published 2026-08-04T06:23:24.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data() The `ims_pcu_process_data()` processes incoming URB data byte by byte. However, it fails to check if the `read_pos` index exceeds IMS_PCU_BUF_SIZE. If a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE, `read_pos` will increment indefinitely. Moreover, since `read_pos` is located immediately after `read_buf`, the attacker can overwrite `read_pos` itself to arbitrarily control the index. This manipulated `read_pos` is subsequently used in `ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a heap buffer overflow. Specifically, an attacker can overwrite the `cmd_done.wait.head` located at offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`. Consequently, when the driver calls `complete(&pcu->cmd_done)`, it triggers a control flow hijack by using the manipulated pointer. Fix this by adding a bounds check for `read_pos` before writing to `read_buf`. If the packet is too long, discard it, log a warning, and reset the parser state. [dtor: factor out resetting packet state, reset checksum as well]
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.1; 628329d52474323938a03826941e166bc7c8eff4 <ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49; 628329d52474323938a03826941e166bc7c8eff4 <875115b82c295277b81b6dfee7debc725f44e854; 628329d52474323938a03826941e166bc7c8eff4 <d03a740e087de7dcb2a26dc1123377bd3d1d84ca; patch: 6.12.101; 628329d52474323938a03826941e166bc7c8eff4 <40bbbf2e91fd60715525bf0405c67876af817edf; patch: 6.6.148; 3.10; patch: 0; patch: 6.18.42
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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