Linux: Out-of-bounds Read
CVE-2024-35967 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 b0e30c37695b614bee69187f86eaf250e36606ce, 2c2dc87cdebef3fe3b9d7a711a984c70e376e32e, 7bc65d23ba20dcd7ecc094a12c181e594e5eb315 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 0.24% 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 b0e30c37695b614bee69187f86eaf250e36606ce or 2c2dc87cdebef3fe3b9d7a711a984c70e376e32e or 7bc65d23ba20dcd7ecc094a12c181e594e5eb315 or 72473db90900da970a16ee50ad23c2c38d107d8c, whichever matches your release line, or a later version.
- Update SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1.1 or a later version.
- Update Linux Kernel to 5.10.216 or 5.15.178 or 6.1.87 or 6.6.28, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | b96e9c671b05f95126753a22145d4509d45ca197 up to, but not including, b0e30c37695b614bee69187f86eaf250e36606ce; b96e9c671b05f95126753a22145d4509d45ca197 up to, but not including, 2c2dc87cdebef3fe3b9d7a711a984c70e376e32e; b96e9c671b05f95126753a22145d4509d45ca197 up to, but not including, 7bc65d23ba20dcd7ecc094a12c181e594e5eb315; b96e9c671b05f95126753a22145d4509d45ca197 up to, but not including, 72473db90900da970a16ee50ad23c2c38d107d8c; b96e9c671b05f95126753a22145d4509d45ca197 up to, but not including, 419a0ffca7010216f0fc265b08558d7394fa0ba7; b96e9c671b05f95126753a22145d4509d45ca197 up to, but not including, 51eda36d33e43201e7a4fd35232e069b2c850b01; 3.8 | b0e30c37695b614bee69187f86eaf250e36606ce, 2c2dc87cdebef3fe3b9d7a711a984c70e376e32e, 7bc65d23ba20dcd7ecc094a12c181e594e5eb315, 72473db90900da970a16ee50ad23c2c38d107d8c, 419a0ffca7010216f0fc265b08558d7394fa0ba7, 51eda36d33e43201e7a4fd35232e069b2c850b01 |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | before V1.1.1 | V1.1.1 |
| Linux | Linux Kernel | 3.8 up to, but not including, 5.10.216; 5.11 up to, but not including, 5.15.178; 5.16 up to, but not including, 6.1.87; 6.2 up to, but not including, 6.6.28; 6.7 up to, but not including, 6.8.7; 6.9 | 5.10.216, 5.15.178, 6.1.87, 6.6.28, 6.8.7 |
| Debian | Debian Linux | 10.0 | Not stated |
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 | CNA |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix not validating setsockopt user input syzbot reported sco_sock_setsockopt() is copying data without checking user input length. BUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] BUG: KASAN: slab-out-of-bounds in copy_from_sockptr include/linux/sockptr.h:55 [inline] BUG: KASAN: slab-out-of-bounds in sco_sock_setsockopt+0xc0b/0xf90 net/bluetooth/sco.c:893 Read of size 4 at addr ffff88805f7b15a3 by task syz-executor.5/12578
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/2c2dc87cdebef3fe3b9d7a711a984c70e376e32e
- git.kernel.org/stable/c/419a0ffca7010216f0fc265b08558d7394fa0ba7
- git.kernel.org/stable/c/51eda36d33e43201e7a4fd35232e069b2c850b01
- git.kernel.org/stable/c/72473db90900da970a16ee50ad23c2c38d107d8c
- git.kernel.org/stable/c/7bc65d23ba20dcd7ecc094a12c181e594e5eb315
- git.kernel.org/stable/c/b0e30c37695b614bee69187f86eaf250e36606ce
Third-party and government advisories
- lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlThird Party Advisory
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
- 7.8 High severity
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