CVE-2024-26634: net: fix removing a namespace with conflicting altnames
Vulnerability summary
CVE-2024-26634 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.5% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 16 · Related 19Timeline
- 18-03-2024PublishedVulnerability first disclosed.
- 23-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: net: fix removing a namespace with conflicting altnames Mark reports a BUG() when a net namespace is removed. kernel BUG at net/core/dev.c:11520! Physical interfaces moved outside of init_net get "refunded" to init_net when that namespace disappears. The main interface name may get overwritten in the process if it would have conflicted. We need to also discard all conflicting altnames. Recent fixes addressed ensuring that altnames get moved with the main interface, which surfaced this problem.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
14%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.23% 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 causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu75 products
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
- linux-aws-5.19All versions (No fix recorded)
Linux2 products
- linux≥ 673edcffa0960fc154085d639e10f80b6317d3bd, < a2232f29bf52c24f827865b3c90829c44b6c695b | ≥ 7663d522099ecc464512164e660bc771b2ff7b64, < e855dded4b70d1975ee7b9fed0c700391e3c8ea6 | ≥ 7663d522099ecc464512164e660bc771b2ff7b64, < 8072699aa9e67d1727692cfb3c347263bb627fb9 | ≥ 7663d522099ecc464512164e660bc771b2ff7b64, < d09486a04f5da0a812c26217213b89a3b1acf836 | f7a69786fe5ec75d1cdd71b465e74a1adc68ef40 | ≥ 6.1.60, < 6.1.76 | ≥ 6.5.9, < 6.6 | 6.6
- linux_kernel≥ 6.1.60, < 6.1.76 | ≥ 6.6, < 6.6.15 | ≥ 6.7, < 6.7.3 | 6.8:rc1
Debian1 product
- linux< 6.1.76-1 | < 6.6.15-1
3 vendors · 78 products
