Linux: Out-of-bounds Read
CVE-2023-53117 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 f31cd5da636682caea424fa1c22679016cbfc16b, 3d5d9501b634fd268eb56428cda92cd317752d69, 6631c8da02cfad96c53b217cf647b511c7f34faf 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 0.21% 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 f31cd5da636682caea424fa1c22679016cbfc16b or 3d5d9501b634fd268eb56428cda92cd317752d69 or 6631c8da02cfad96c53b217cf647b511c7f34faf or a759905de9cd6ec9ca08ceadf0920272772ed830, whichever matches your release line, or a later version.
- Update Linux Kernel to 4.14.310 or 4.19.278 or 5.4.237 or 5.10.175, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, f31cd5da636682caea424fa1c22679016cbfc16b; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, 3d5d9501b634fd268eb56428cda92cd317752d69; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, 6631c8da02cfad96c53b217cf647b511c7f34faf; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, a759905de9cd6ec9ca08ceadf0920272772ed830; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, f8cd8754a03a3748384ee438c572423643c9c315; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, cec08b7d1ebcd3138d4658b3868ce26aeb1e8e06; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, eea8e4e056a5ffbeb539a13854c017d5d62c756a; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, 609d54441493c99f21c1823dfd66fa7f4c512ff4; and 1 more ranges | f31cd5da636682caea424fa1c22679016cbfc16b, 3d5d9501b634fd268eb56428cda92cd317752d69, 6631c8da02cfad96c53b217cf647b511c7f34faf, a759905de9cd6ec9ca08ceadf0920272772ed830, f8cd8754a03a3748384ee438c572423643c9c315, cec08b7d1ebcd3138d4658b3868ce26aeb1e8e06 |
| Linux | Linux Kernel | before 4.14.310; 4.15 up to, but not including, 4.19.278; 4.20 up to, but not including, 5.4.237; 5.5 up to, but not including, 5.10.175; 5.11 up to, but not including, 5.15.103; 5.16 up to, but not including, 6.1.20; 6.2 up to, but not including, 6.2.7; 6.3 | 4.14.310, 4.19.278, 5.4.237, 5.10.175, 5.15.103, 6.1.20 |
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: fs: prevent out-of-bounds array speculation when closing a file descriptor Google-Bug-Id: 114199369
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
- git.kernel.org/stable/c/3d5d9501b634fd268eb56428cda92cd317752d69
- git.kernel.org/stable/c/609d54441493c99f21c1823dfd66fa7f4c512ff4
- git.kernel.org/stable/c/6631c8da02cfad96c53b217cf647b511c7f34faf
- git.kernel.org/stable/c/a759905de9cd6ec9ca08ceadf0920272772ed830
- git.kernel.org/stable/c/cec08b7d1ebcd3138d4658b3868ce26aeb1e8e06
- git.kernel.org/stable/c/eea8e4e056a5ffbeb539a13854c017d5d62c756a
- git.kernel.org/stable/c/f31cd5da636682caea424fa1c22679016cbfc16b
- git.kernel.org/stable/c/f8cd8754a03a3748384ee438c572423643c9c315
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
- 8.8 High severity
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