CVE-2024-26634

net: fix removing a namespace with conflicting altnames

MEDIUM
5.5
CVSS Score
Published: March 18, 2024 at 10:14 AM UTC
Updated: June 17, 2026 at 07:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≥ 6.5.96.1.60 ≤ v < 6.1.766.5.9 ≤ v < 6.66.6 ≤ v < 6.6.156.6 ≤ v < 6.7.36.6 ≤ v < 6.86.7 ≤ v < 6.7.36.1.606.5.96.8 rc1673edcffa0960fc154085d639e10f80b6317d3bd7663d522099ecc464512164e660bc771b2ff7b64f7a69786fe5ec75d1cdd71b465e74a1adc68ef40
Vendor states this is fixed in 8072699aa9e67d1727692cfb3c347263bb627fb9 (fixed)
Vendor states this is fixed in a2232f29bf52c24f827865b3c90829c44b6c695b (fixed)
Vendor states this is fixed in d09486a04f5da0a812c26217213b89a3b1acf836 (fixed)
Vendor states this is fixed in e855dded4b70d1975ee7b9fed0c700391e3c8ea6 (fixed)
Vendor states this is fixed in 6.1.76 (unaffected)
Vendor states this is fixed in 6.6 (unaffected)
Vendor states this is fixed in 6.6.15 (unaffected)
Vendor states this is fixed in 6.7.3 (unaffected)
Vendor states this is fixed in 6.8 (unaffected)

References (4)

Mailing ListPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8072699aa9e67d1727692cfb3c347263bb627fb9
Mailing ListPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a2232f29bf52c24f827865b3c90829c44b6c695b
Mailing ListPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d09486a04f5da0a812c26217213b89a3b1acf836
Mailing ListPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e855dded4b70d1975ee7b9fed0c700391e3c8ea6

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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