Linux: Out-of-bounds Read
CVE-2023-53675 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 72021ae61a2bc6ca73cd593e255a10ed5f5dc5e7, cffe09ca0555e235a42d6fa065e463c4b3d5b657, 79ec5dd5fb07ecaea2f978c2d7a9f2f3526e4d19 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 72021ae61a2bc6ca73cd593e255a10ed5f5dc5e7 or cffe09ca0555e235a42d6fa065e463c4b3d5b657 or 79ec5dd5fb07ecaea2f978c2d7a9f2f3526e4d19 or c315560e3ef77c1d822249f1743e647dc9c9912a, whichever matches your release line, or a later version.
- Update Linux Kernel to 4.14.308 or 4.19.276 or 5.4.235 or 5.10.173, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 9927c68864e9c39cc317b4f559309ba29e642168 up to, but not including, 72021ae61a2bc6ca73cd593e255a10ed5f5dc5e7; 9927c68864e9c39cc317b4f559309ba29e642168 up to, but not including, cffe09ca0555e235a42d6fa065e463c4b3d5b657; 9927c68864e9c39cc317b4f559309ba29e642168 up to, but not including, 79ec5dd5fb07ecaea2f978c2d7a9f2f3526e4d19; 9927c68864e9c39cc317b4f559309ba29e642168 up to, but not including, c315560e3ef77c1d822249f1743e647dc9c9912a; 9927c68864e9c39cc317b4f559309ba29e642168 up to, but not including, 584892fd29a41ef424a148118a3103b16b94fb8c; 9927c68864e9c39cc317b4f559309ba29e642168 up to, but not including, 414418abc19fa4ccf730d273061a426c07a061d6; 9927c68864e9c39cc317b4f559309ba29e642168 up to, but not including, 4b8cae410472653a59e15af62c57c49b8e0a1201; 9927c68864e9c39cc317b4f559309ba29e642168 up to, but not including, 801ab13d50cf3d26170ee073ea8bb4eececb76ab; and 1 more ranges | 72021ae61a2bc6ca73cd593e255a10ed5f5dc5e7, cffe09ca0555e235a42d6fa065e463c4b3d5b657, 79ec5dd5fb07ecaea2f978c2d7a9f2f3526e4d19, c315560e3ef77c1d822249f1743e647dc9c9912a, 584892fd29a41ef424a148118a3103b16b94fb8c, 414418abc19fa4ccf730d273061a426c07a061d6 |
| Linux | Linux Kernel | 2.6.25 up to, but not including, 4.14.308; 4.15 up to, but not including, 4.19.276; 4.20 up to, but not including, 5.4.235; 5.5 up to, but not including, 5.10.173; 5.11 up to, but not including, 5.15.99; 5.16 up to, but not including, 6.1.16; 6.2 up to, but not including, 6.2.3 | 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.99, 6.1.16 |
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 | 8.8 | High | CNA |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: scsi: ses: Fix possible desc_ptr out-of-bounds accesses Sanitize possible desc_ptr out-of-bounds accesses in ses_enclosure_data_process().
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/414418abc19fa4ccf730d273061a426c07a061d6
- git.kernel.org/stable/c/4b8cae410472653a59e15af62c57c49b8e0a1201
- git.kernel.org/stable/c/584892fd29a41ef424a148118a3103b16b94fb8c
- git.kernel.org/stable/c/72021ae61a2bc6ca73cd593e255a10ed5f5dc5e7
- git.kernel.org/stable/c/79ec5dd5fb07ecaea2f978c2d7a9f2f3526e4d19
- git.kernel.org/stable/c/801ab13d50cf3d26170ee073ea8bb4eececb76ab
- git.kernel.org/stable/c/c315560e3ef77c1d822249f1743e647dc9c9912a
- git.kernel.org/stable/c/cffe09ca0555e235a42d6fa065e463c4b3d5b657
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
- 7.1 High severity
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