CVE-2024-36883
What it is
In the Linux kernel, the following vulnerability has been resolved: net: fix out-of-bounds access in ops_init net_alloc_generic is called by net_alloc, which is called without any locking. It reads max_gen_ptrs, which is changed under pernet_ops_rwsem. It is read twice, first to allocate an array, then to set s.len, which is later used to limit the bounds of the array access. It is possible that the array is allocated and another thread is registering a new pernet ops, increments max_gen_ptrs, which is then used to set s.len with a larger than allocated length for the variable array. Fix it by reading max_gen_ptrs only once in net_alloc_generic. If max_gen_ptrs is later incremented, it will be caught in net_assign_generic.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.3% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Weakness
- CWE-125 · Out-of-bounds read
- Record status
- Modified
Affected
- Linux Kernel < 3.1
- Linux Kernel < 3.3
- Linux Kernel < 4.19.314
- Linux Kernel < 5.4.276
- Linux Kernel < 5.10.217
- Linux Kernel < 5.15.159
- Linux Kernel < 6.1.91
- Linux Kernel < 6.6.31
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2024-36883.md and follow it. Check whether this project is affected by CVE-2024-36883. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/0c3248bc708a7797be573214065cf908ff1f54c7
- https://git.kernel.org/stable/c/2d60ff5874aefd006717ca5e22ac1e25eac29c42
- https://git.kernel.org/stable/c/3cdc34d76c4f777579e28ad373979d36c030cfd3
- https://git.kernel.org/stable/c/7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f
- https://git.kernel.org/stable/c/9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030
- https://git.kernel.org/stable/c/a26ff37e624d12e28077e5b24d2b264f62764ad6
- https://git.kernel.org/stable/c/b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd
- https://git.kernel.org/stable/c/f4f94587e1bf87cb40ec33955a9d90148dd026ab
- https://git.kernel.org/stable/c/0c3248bc708a7797be573214065cf908ff1f54c7
- https://git.kernel.org/stable/c/2d60ff5874aefd006717ca5e22ac1e25eac29c42
References
- https://git.kernel.org/stable/c/0c3248bc708a7797be573214065cf908ff1f54c7
- https://git.kernel.org/stable/c/2d60ff5874aefd006717ca5e22ac1e25eac29c42
- https://git.kernel.org/stable/c/3cdc34d76c4f777579e28ad373979d36c030cfd3
- https://git.kernel.org/stable/c/7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f
- https://git.kernel.org/stable/c/9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030
- https://git.kernel.org/stable/c/a26ff37e624d12e28077e5b24d2b264f62764ad6
- https://git.kernel.org/stable/c/b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd
- https://git.kernel.org/stable/c/f4f94587e1bf87cb40ec33955a9d90148dd026ab
- https://git.kernel.org/stable/c/0c3248bc708a7797be573214065cf908ff1f54c7
- https://git.kernel.org/stable/c/2d60ff5874aefd006717ca5e22ac1e25eac29c42
- https://git.kernel.org/stable/c/3cdc34d76c4f777579e28ad373979d36c030cfd3
- https://git.kernel.org/stable/c/7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f
- https://git.kernel.org/stable/c/9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030
- https://git.kernel.org/stable/c/a26ff37e624d12e28077e5b24d2b264f62764ad6
- https://git.kernel.org/stable/c/b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd
- https://git.kernel.org/stable/c/f4f94587e1bf87cb40ec33955a9d90148dd026ab
- https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://security.netapp.com/advisory/ntap-20241018-0001/