Linux: Out-of-bounds Read
CVE-2026-64412 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 43dd2332b8a27b3ac5108791680cade654ab0f96, 5777c8f1c3610786d8482b8f620f40fccaf1542b, 0ddca0f90fa3395111d078ae4399615cf3ea94aa 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 0.13% 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 43dd2332b8a27b3ac5108791680cade654ab0f96 or 5777c8f1c3610786d8482b8f620f40fccaf1542b or 0ddca0f90fa3395111d078ae4399615cf3ea94aa or d2367d99f2455f373996d9ddbe833dbe9f942213, whichever matches your release line, or a later version.
- Update Linux Kernel to 5.10.261 or 5.15.212 or 6.1.178 or 6.6.145, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | bcf4934288402be3464110109a4dae3bd6fb3e93 up to, but not including, 43dd2332b8a27b3ac5108791680cade654ab0f96; bcf4934288402be3464110109a4dae3bd6fb3e93 up to, but not including, 5777c8f1c3610786d8482b8f620f40fccaf1542b; bcf4934288402be3464110109a4dae3bd6fb3e93 up to, but not including, 0ddca0f90fa3395111d078ae4399615cf3ea94aa; bcf4934288402be3464110109a4dae3bd6fb3e93 up to, but not including, d2367d99f2455f373996d9ddbe833dbe9f942213; bcf4934288402be3464110109a4dae3bd6fb3e93 up to, but not including, da32e78bbb187ed7b137e0007034185570a3a172; bcf4934288402be3464110109a4dae3bd6fb3e93 up to, but not including, 13a5f532e3a4fc75c33060a026def1572c208643; bcf4934288402be3464110109a4dae3bd6fb3e93 up to, but not including, 7b217960e88b5d2d1e8cdcbcaf3bdf6fe199a0c8; bcf4934288402be3464110109a4dae3bd6fb3e93 up to, but not including, 084d23f818321390509e9738a0b08bbf46df6425; and 1 more ranges | 43dd2332b8a27b3ac5108791680cade654ab0f96, 5777c8f1c3610786d8482b8f620f40fccaf1542b, 0ddca0f90fa3395111d078ae4399615cf3ea94aa, d2367d99f2455f373996d9ddbe833dbe9f942213, da32e78bbb187ed7b137e0007034185570a3a172, 13a5f532e3a4fc75c33060a026def1572c208643 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | V3.1.6 and later; V3.1.7 and later | Not stated |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | V3.1.6 and later; V3.1.7 and later | Not stated |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | V3.1.6 and later; V3.1.7 and later | Not stated |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | V3.1.6 and later; V3.1.7 and later | Not stated |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | V3.1.6 and later; V3.1.7 and later | Not stated |
| Linux | Linux Kernel | 4.6.1 up to, but not including, 5.10.261; 5.11 up to, but not including, 5.15.212; 5.16 up to, but not including, 6.1.178; 6.2 up to, but not including, 6.6.145; 6.7 up to, but not including, 6.12.96; 6.13 up to, but not including, 6.18.39; 6.19 up to, but not including, 7.1.4; 4.6; and 1 more ranges | 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.96, 6.18.39 |
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 CNA.
Official description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: module names must be null-terminated We need to explicitly check the length, else we may pass non-null terminated string to request_module().
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
- git.kernel.org/stable/c/084d23f818321390509e9738a0b08bbf46df6425
- git.kernel.org/stable/c/0ddca0f90fa3395111d078ae4399615cf3ea94aa
- git.kernel.org/stable/c/13a5f532e3a4fc75c33060a026def1572c208643
- git.kernel.org/stable/c/43dd2332b8a27b3ac5108791680cade654ab0f96
- git.kernel.org/stable/c/5777c8f1c3610786d8482b8f620f40fccaf1542b
- git.kernel.org/stable/c/7b217960e88b5d2d1e8cdcbcaf3bdf6fe199a0c8
- git.kernel.org/stable/c/d2367d99f2455f373996d9ddbe833dbe9f942213
- git.kernel.org/stable/c/da32e78bbb187ed7b137e0007034185570a3a172
Other references
Recent Out-of-bounds Read vulnerabilities
- 8.4 High severity
- 7.1 High severity
- 7.1 High severity
- 7.7 High severity
- 9.1 Critical severity
- 8.2 High severity
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