CVE-2024-36883: net: fix out-of-bounds access in ops_init
Vulnerability summary
CVE-2024-36883 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 24% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 41 · Related 30Timeline
- 30-05-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability 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
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HDiffers
- NVDNIST7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HDiffers
EPSS trend
Probability
0.31%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.31% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu128 products
- linuxAll versions (No fix recorded) | < 5.4.0-192.212 | < 5.15.0-118.128 | < 6.8.0-40.40
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.4.0-1130.140 | < 5.15.0-1067.73 | < 6.8.0-1013.14
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.94-1 | < 6.8.11-1
- debian_linuxEOL10.0
Linux2 products
- 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_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
3 vendors · 132 products
References
33 linksShow all 33 references
- security.netapp.com/advisory/ntap-20241018-0001/Third Party Advisory
