Linux: Out-of-bounds Read
CVE-2025-22107 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 f85b9bfb08ba2b642d1810c6c4ae1e7b46f1776a, f117d0467215d7f1d445ae16d2c799637e63dc6c, b52153da1f42e2f4d6259257a7ba027331671a93 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 0.22% 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 f85b9bfb08ba2b642d1810c6c4ae1e7b46f1776a or f117d0467215d7f1d445ae16d2c799637e63dc6c or b52153da1f42e2f4d6259257a7ba027331671a93 or 4584486cfcca24b7b586da3377eb3cffd48669ec, whichever matches your release line, or a later version.
- Update Linux Kernel to 6.14.2 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5 up to, but not including, f85b9bfb08ba2b642d1810c6c4ae1e7b46f1776a; 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5 up to, but not including, f117d0467215d7f1d445ae16d2c799637e63dc6c; 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5 up to, but not including, b52153da1f42e2f4d6259257a7ba027331671a93; 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5 up to, but not including, 4584486cfcca24b7b586da3377eb3cffd48669ec; 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5 up to, but not including, 031e00249e9e6bee72ba66701c8f83b45fc4b8a2; 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5 up to, but not including, 59b97641de03c081f26b3a8876628c765b5faa25; 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5 up to, but not including, 5f2b28b79d2d1946ee36ad8b3dc0066f73c90481; 5.2 | f85b9bfb08ba2b642d1810c6c4ae1e7b46f1776a, f117d0467215d7f1d445ae16d2c799637e63dc6c, b52153da1f42e2f4d6259257a7ba027331671a93, 4584486cfcca24b7b586da3377eb3cffd48669ec, 031e00249e9e6bee72ba66701c8f83b45fc4b8a2, 59b97641de03c081f26b3a8876628c765b5faa25 |
| 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 | 5.2 up to, but not including, 6.14.2 | 6.14.2 |
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: net: dsa: sja1105: fix kasan out-of-bounds warning in sja1105_table_delete_entry() There are actually 2 problems: - deleting the last element doesn't require the memmove of elements [i + 1, end) over it. Actually, element i+1 is out of bounds. - The memmove itself should move size - i - 1 elements, because the last element is out of bounds. The out-of-bounds element still remains out of bounds after being accessed, so the problem is only that we touch it, not that it becomes in active use. But I suppose it can lead to issues if the out-of-bounds element is part of an unmapped page.
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.
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Other references
- git.kernel.org/stable/c/031e00249e9e6bee72ba66701c8f83b45fc4b8a2
- git.kernel.org/stable/c/4584486cfcca24b7b586da3377eb3cffd48669ec
- git.kernel.org/stable/c/b52153da1f42e2f4d6259257a7ba027331671a93
- git.kernel.org/stable/c/f117d0467215d7f1d445ae16d2c799637e63dc6c
- git.kernel.org/stable/c/f85b9bfb08ba2b642d1810c6c4ae1e7b46f1776a
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.com/productcert/html/ssa-457936.html
Recent Out-of-bounds Read vulnerabilities
- 8.8 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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