Linux: Out-of-bounds Read
CVE-2024-38572 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions 95575de7dede7b1ed3b9718dab9dda97914ea775, b48d40f5840c505b7af700594aa8379eec28e925, a1abdb63628b04855a929850772de97435ed1555 as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.23% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Linux to 95575de7dede7b1ed3b9718dab9dda97914ea775 or b48d40f5840c505b7af700594aa8379eec28e925 or a1abdb63628b04855a929850772de97435ed1555 or e1bdff48a1bb4a4ac660c19c55a820968c48b3f2, whichever matches your release line, or a later version.
- Update Linux Kernel to 6.6.33 or 6.8.12 or 6.9.3, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | d889913205cf7ebda905b1e62c5867ed4e39f6c2 up to, but not including, 95575de7dede7b1ed3b9718dab9dda97914ea775; d889913205cf7ebda905b1e62c5867ed4e39f6c2 up to, but not including, b48d40f5840c505b7af700594aa8379eec28e925; d889913205cf7ebda905b1e62c5867ed4e39f6c2 up to, but not including, a1abdb63628b04855a929850772de97435ed1555; d889913205cf7ebda905b1e62c5867ed4e39f6c2 up to, but not including, e1bdff48a1bb4a4ac660c19c55a820968c48b3f2; 6.3 | 95575de7dede7b1ed3b9718dab9dda97914ea775, b48d40f5840c505b7af700594aa8379eec28e925, a1abdb63628b04855a929850772de97435ed1555, e1bdff48a1bb4a4ac660c19c55a820968c48b3f2 |
| Linux | Linux Kernel | 6.3 up to, but not including, 6.6.33; 6.7 up to, but not including, 6.8.12; 6.9 up to, but not including, 6.9.3 | 6.6.33, 6.8.12, 6.9.3 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | CNA |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix out-of-bound access of qmi_invoke_handler() Currently, there is no terminator entry for ath12k_qmi_msg_handlers hence facing below KASAN warning, ================================================================== BUG: KASAN: global-out-of-bounds in qmi_invoke_handler+0xa4/0x148 Read of size 8 at addr ffffffd00a6428d8 by task kworker/u8:2/1273 CPU: 0 PID: 1273 Comm: kworker/u8:2 Not tainted 5.4.213 #0 Workqueue: qmi_msg_handler qmi_data_ready_work Call trace: dump_backtrace+0x0/0x20c show_stack+0x14/0x1c dump_stack+0xe0/0x138 print_address_description.isra.5+0x30/0x330 __kasan_report+0x16c/0x1bc kasan_report+0xc/0x14 __asan_load8+0xa8/0xb0 qmi_invoke_handler+0xa4/0x148 qmi_handle_message+0x18c/0x1bc qmi_data_ready_work+0x4ec/0x528 process_one_work+0x2c0/0x440 worker_thread+0x324/0x4b8 kthread+0x210/0x228 ret_from_fork+0x10/0x18 The address belongs to the variable: ath12k_mac_mon_status_filter_default+0x4bd8/0xfffffffffffe2300 [ath12k] [...] ================================================================== Add a dummy terminator entry at the end to assist the qmi_invoke_handler() in traversing up to the terminator entry without accessing an out-of-boundary index. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Recent Out-of-bounds Read vulnerabilities
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.5 High severity
- 7.1 High severity
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