Linux: Out-of-bounds Read
CVE-2023-53357 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 374fb914304d9b500721007f3837ea8f1f9a2418, b0b971fe7d61411ede63c3291764dbde1577ef2c, 39fa14e824acfd470db4f42c354297456bd82b53 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 0.2% 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 374fb914304d9b500721007f3837ea8f1f9a2418 or b0b971fe7d61411ede63c3291764dbde1577ef2c or 39fa14e824acfd470db4f42c354297456bd82b53 or a134dd582c0d5b6068efa308bd485cf1d00b3f65, whichever matches your release line, or a later version.
- Update Linux Kernel to 4.19.291 or 5.4.251 or 5.10.188 or 5.15.121, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | ef4256733506f2459a0c436b62267d22a3f0cec6 up to, but not including, 374fb914304d9b500721007f3837ea8f1f9a2418; ef4256733506f2459a0c436b62267d22a3f0cec6 up to, but not including, b0b971fe7d61411ede63c3291764dbde1577ef2c; ef4256733506f2459a0c436b62267d22a3f0cec6 up to, but not including, 39fa14e824acfd470db4f42c354297456bd82b53; ef4256733506f2459a0c436b62267d22a3f0cec6 up to, but not including, a134dd582c0d5b6068efa308bd485cf1d00b3f65; ef4256733506f2459a0c436b62267d22a3f0cec6 up to, but not including, be1a3ec63a840cc9e59a033acf154f56255699a1; ef4256733506f2459a0c436b62267d22a3f0cec6 up to, but not including, 152bb26796ff054af50b2ee1b3ca56e364e4f61b; ef4256733506f2459a0c436b62267d22a3f0cec6 up to, but not including, bea301c046110bf421a3ce153fb868cb8d618e90; ef4256733506f2459a0c436b62267d22a3f0cec6 up to, but not including, 301867b1c16805aebbc306aafa6ecdc68b73c7e5; and 1 more ranges | 374fb914304d9b500721007f3837ea8f1f9a2418, b0b971fe7d61411ede63c3291764dbde1577ef2c, 39fa14e824acfd470db4f42c354297456bd82b53, a134dd582c0d5b6068efa308bd485cf1d00b3f65, be1a3ec63a840cc9e59a033acf154f56255699a1, 152bb26796ff054af50b2ee1b3ca56e364e4f61b |
| Linux | Linux Kernel | 2.6.36 up to, but not including, 4.19.291; 4.20 up to, but not including, 5.4.251; 5.5 up to, but not including, 5.10.188; 5.11 up to, but not including, 5.15.121; 5.16 up to, but not including, 6.1.39; 6.2 up to, but not including, 6.3.13; 6.4 up to, but not including, 6.4.4 | 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.39, 6.3.13 |
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.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.1 | High | NVD |
| CVSS 3.1 | 7.1 | High | CISA (ADP) |
Official description
In the Linux kernel, the following vulnerability has been resolved: md/raid10: check slab-out-of-bounds in md_bitmap_get_counter If we write a large number to md/bitmap_set_bits, md_bitmap_checkpage() will return -EINVAL because 'page >= bitmap->pages', but the return value was not checked immediately in md_bitmap_get_counter() in order to set *blocks value and slab-out-of-bounds occurs. Move check of 'page >= bitmap->pages' to md_bitmap_get_counter() and return directly if true.
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/152bb26796ff054af50b2ee1b3ca56e364e4f61b
- git.kernel.org/stable/c/301867b1c16805aebbc306aafa6ecdc68b73c7e5
- git.kernel.org/stable/c/374fb914304d9b500721007f3837ea8f1f9a2418
- git.kernel.org/stable/c/39fa14e824acfd470db4f42c354297456bd82b53
- git.kernel.org/stable/c/a134dd582c0d5b6068efa308bd485cf1d00b3f65
- git.kernel.org/stable/c/b0b971fe7d61411ede63c3291764dbde1577ef2c
- git.kernel.org/stable/c/be1a3ec63a840cc9e59a033acf154f56255699a1
- git.kernel.org/stable/c/bea301c046110bf421a3ce153fb868cb8d618e90
Recent Out-of-bounds Read vulnerabilities
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
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