Linux: Out-of-bounds Read
CVE-2024-41090 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 8be915fc5ff9a5e296f6538be12ea75a1a93bdea, 7431144b406ae82807eb87d8c98e518475b0450f, e5e5e63c506b93b89b01f522b6a7343585f784e6 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 0.26% 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 8be915fc5ff9a5e296f6538be12ea75a1a93bdea or 7431144b406ae82807eb87d8c98e518475b0450f or e5e5e63c506b93b89b01f522b6a7343585f784e6 or ee93e6da30377cf2a75e16cd32bb9fcd86a61c46, whichever matches your release line, or a later version.
- Update Linux Kernel to 5.4.281 or 5.10.223 or 5.15.164 or 6.1.102, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 0efac27791ee068075d80f07c55a229b1335ce12 up to, but not including, 8be915fc5ff9a5e296f6538be12ea75a1a93bdea; 0efac27791ee068075d80f07c55a229b1335ce12 up to, but not including, 7431144b406ae82807eb87d8c98e518475b0450f; 0efac27791ee068075d80f07c55a229b1335ce12 up to, but not including, e5e5e63c506b93b89b01f522b6a7343585f784e6; 0efac27791ee068075d80f07c55a229b1335ce12 up to, but not including, ee93e6da30377cf2a75e16cd32bb9fcd86a61c46; 0efac27791ee068075d80f07c55a229b1335ce12 up to, but not including, aa6a5704cab861c9b2ae9f475076e1881e87f5aa; 0efac27791ee068075d80f07c55a229b1335ce12 up to, but not including, 73d462a38d5f782b7c872fe9ae8393d9ef5483da; 0efac27791ee068075d80f07c55a229b1335ce12 up to, but not including, e1a786b9bbb767fd1c922d424aaa8078cc542309; 0efac27791ee068075d80f07c55a229b1335ce12 up to, but not including, ed7f2afdd0e043a397677e597ced0830b83ba0b3; and 1 more ranges | 8be915fc5ff9a5e296f6538be12ea75a1a93bdea, 7431144b406ae82807eb87d8c98e518475b0450f, e5e5e63c506b93b89b01f522b6a7343585f784e6, ee93e6da30377cf2a75e16cd32bb9fcd86a61c46, aa6a5704cab861c9b2ae9f475076e1881e87f5aa, 73d462a38d5f782b7c872fe9ae8393d9ef5483da |
| Linux | Linux Kernel | 4.20 up to, but not including, 5.4.281; 5.5 up to, but not including, 5.10.223; 5.11 up to, but not including, 5.15.164; 5.16 up to, but not including, 6.1.102; 6.2 up to, but not including, 6.6.43; 6.7 up to, but not including, 6.9.12; 6.10 up to, but not including, 6.10.2 | 5.4.281, 5.10.223, 5.15.164, 6.1.102, 6.6.43, 6.9.12 |
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: tap: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tap_get_user_xdp() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tap_get_user_xdp()-->skb_set_network_header() may assume the size is more than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata. In the alternative path, tap_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted. This is to drop any frame shorter than the Ethernet header size just like how tap_get_user() does. CVE: CVE-2024-41090
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/73d462a38d5f782b7c872fe9ae8393d9ef5483da
- git.kernel.org/stable/c/7431144b406ae82807eb87d8c98e518475b0450f
- git.kernel.org/stable/c/8be915fc5ff9a5e296f6538be12ea75a1a93bdea
- git.kernel.org/stable/c/aa6a5704cab861c9b2ae9f475076e1881e87f5aa
- git.kernel.org/stable/c/e1a786b9bbb767fd1c922d424aaa8078cc542309
- git.kernel.org/stable/c/e5e5e63c506b93b89b01f522b6a7343585f784e6
- git.kernel.org/stable/c/ed7f2afdd0e043a397677e597ced0830b83ba0b3
- git.kernel.org/stable/c/ee93e6da30377cf2a75e16cd32bb9fcd86a61c46
Other references
Recent Out-of-bounds Read vulnerabilities
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.8 High severity
- 7.1 High severity
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