CVE-2024-36883

Advisory lineage Upstream: 0 Downstream: 43
Analyzed
Published: 30 May 2024, 15:28
Last modified:23 May 2026, 15:47

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
v3.1 (nvd)
EPSS Score
<0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

30 May 2024, 15:28
Published
Vulnerability first disclosed
23 May 2026, 15:47
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • debian•debian_linux

    10.0

  • linux•linux

    ≥ 073862ba5d249c20bd5c49fc6d904ff0e1f6a672, < 3cdc34d76c4f777579e28ad373979d36c030cfd3 | ≥ 073862ba5d249c20bd5c49fc6d904ff0e1f6a672, < 7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f | ≥ 073862ba5d249c20bd5c49fc6d904ff0e1f6a672, < 0c3248bc708a7797be573214065cf908ff1f54c7 | ≥ 073862ba5d249c20bd5c49fc6d904ff0e1f6a672, < 9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030 | ≥ 073862ba5d249c20bd5c49fc6d904ff0e1f6a672, < 2d60ff5874aefd006717ca5e22ac1e25eac29c42 | ≥ 073862ba5d249c20bd5c49fc6d904ff0e1f6a672, < b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd | ≥ 073862ba5d249c20bd5c49fc6d904ff0e1f6a672, < f4f94587e1bf87cb40ec33955a9d90148dd026ab | ≥ 073862ba5d249c20bd5c49fc6d904ff0e1f6a672, < a26ff37e624d12e28077e5b24d2b264f62764ad6 | 561331eae0a03d0c4cf60f3cf485aa3e8aa5ab48 | a2c82f7bee1ffa9eafa1fb0bd886a7eea8c9e497 | ≥ 3.0.19, < 3.1 | ≥ 3.2.3, < 3.3 | 3.3

  • linux•linux_kernel

    ≥ 3.0.19, < 3.1 | ≥ 3.2.3, < 3.3 | ≥ 3.3.1, < 4.19.314 | ≥ 4.20, < 5.4.276 | ≥ 5.5, < 5.10.217 | ≥ 5.11, < 5.15.159 | ≥ 5.16, < 6.1.91 | ≥ 6.2, < 6.6.31 | ≥ 6.7, < 6.8.10 | 3.3 | 3.3:rc2 | 3.3:rc3 | 3.3:rc4 | 3.3:rc5 | 3.3:rc6 | 3.3:rc7 | 6.9:rc1 | 6.9:rc2 | 6.9:rc3 | 6.9:rc4 | 6.9:rc5 | 6.9:rc6 | 6.9:rc7

References (11)