Linux: Out-of-bounds Read
CVE-2025-71068 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.8 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 a22316f5e9a29e4b92030bd8fb9435fe0eb1d5c9, a1ed26debcc74050d3000dff7c4ea5e77f830695, 7ba826aae1d43212f3baa53a2175ad949e21926e 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 0.38% 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 a22316f5e9a29e4b92030bd8fb9435fe0eb1d5c9 or a1ed26debcc74050d3000dff7c4ea5e77f830695 or 7ba826aae1d43212f3baa53a2175ad949e21926e or 5f140b525180c628db8fa6c897f138194a2de417, whichever matches your release line, or a later version.
- Update Linux Kernel to 5.15.198 or 6.6.120 or 6.12.64 or 6.18.3, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | d7cc73972661be4a02a1b09f1d9b3283c6c05154 up to, but not including, a22316f5e9a29e4b92030bd8fb9435fe0eb1d5c9; d7cc73972661be4a02a1b09f1d9b3283c6c05154 up to, but not including, a1ed26debcc74050d3000dff7c4ea5e77f830695; d7cc73972661be4a02a1b09f1d9b3283c6c05154 up to, but not including, 7ba826aae1d43212f3baa53a2175ad949e21926e; d7cc73972661be4a02a1b09f1d9b3283c6c05154 up to, but not including, 5f140b525180c628db8fa6c897f138194a2de417; d7cc73972661be4a02a1b09f1d9b3283c6c05154 up to, but not including, da1ccfc4c452541584a4eae89e337cfa21be6d5a; d7cc73972661be4a02a1b09f1d9b3283c6c05154 up to, but not including, d1bea0ce35b6095544ee82bb54156fc62c067e58; 5.11 | a22316f5e9a29e4b92030bd8fb9435fe0eb1d5c9, a1ed26debcc74050d3000dff7c4ea5e77f830695, 7ba826aae1d43212f3baa53a2175ad949e21926e, 5f140b525180c628db8fa6c897f138194a2de417, da1ccfc4c452541584a4eae89e337cfa21be6d5a, d1bea0ce35b6095544ee82bb54156fc62c067e58 |
| Linux | Linux Kernel | 5.11 up to, but not including, 5.15.198; 6.0 up to, but not including, 6.6.120; 6.12 up to, but not including, 6.12.64; 6.18 up to, but not including, 6.18.3; 6.19 | 5.15.198, 6.6.120, 6.12.64, 6.18.3 |
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
- HighData or code can be modified at will.
- 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:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.8 | Critical | CNA |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: svcrdma: bound check rq_pages index in inline path svc_rdma_copy_inline_range indexed rqstp->rq_pages[rc_curpage] without verifying rc_curpage stays within the allocated page array. Add guards before the first use and after advancing to a new 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.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- git.kernel.org/stable/c/5f140b525180c628db8fa6c897f138194a2de417
- git.kernel.org/stable/c/7ba826aae1d43212f3baa53a2175ad949e21926e
- git.kernel.org/stable/c/a22316f5e9a29e4b92030bd8fb9435fe0eb1d5c9
- git.kernel.org/stable/c/d1bea0ce35b6095544ee82bb54156fc62c067e58
- git.kernel.org/stable/c/da1ccfc4c452541584a4eae89e337cfa21be6d5a
Other references
Recent Out-of-bounds Read vulnerabilities
- 7.5 High severity
- 7.1 High severity
- 7.1 High severity
- 9.8 Critical severity
- 7.1 High severity
- 7.8 High severity
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