Linux: Out-of-bounds Read
CVE-2023-53575 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 133b1cd4d98bb8b272335c8e6b0e0c399c0b2ffa, 637452360ecde9ac972d19416e9606529576b302 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 0.14% 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 133b1cd4d98bb8b272335c8e6b0e0c399c0b2ffa or 637452360ecde9ac972d19416e9606529576b302, whichever matches your release line, or a later version.
- Update Linux Kernel to 6.4.7 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 5c75a208c2449c6ea24f07610cc052f6a352246c up to, but not including, 133b1cd4d98bb8b272335c8e6b0e0c399c0b2ffa; 5c75a208c2449c6ea24f07610cc052f6a352246c up to, but not including, 637452360ecde9ac972d19416e9606529576b302; 6.2 | 133b1cd4d98bb8b272335c8e6b0e0c399c0b2ffa, 637452360ecde9ac972d19416e9606529576b302 |
| Linux | Linux Kernel | 6.2 up to, but not including, 6.4.7 | 6.4.7 |
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.
Official description
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix potential array out of bounds access Account for IWL_SEC_WEP_KEY_OFFSET when needed while verifying key_len size in iwl_mvm_sec_key_add().
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
- 7.1 High severity
- 7.1 High severity
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