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Vulnerability details: VCID-5kq4-sz23-ekey
Vulnerability ID VCID-5kq4-sz23-ekey
Aliases CVE-2026-31642
Summary In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix call removal to use RCU safe deletion Fix rxrpc call removal from the rxnet->calls list to use list_del_rcu() rather than list_del_init() to prevent stuffing up reading /proc/net/rxrpc/calls from potentially getting into an infinite loop. This, however, means that list_empty() no longer works on an entry that's been deleted from the list, making it harder to detect prior deletion. Fix this by: Firstly, make rxrpc_destroy_all_calls() only dump the first ten calls that are unexpectedly still on the list. Limiting the number of steps means there's no need to call cond_resched() or to remove calls from the list here, thereby eliminating the need for rxrpc_put_call() to check for that. rxrpc_put_call() can then be fixed to unconditionally delete the call from the list as it is the only place that the deletion occurs.
Status Published
Exploitability 0.5
Weighted Severity 6.3
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-821 Incorrect Synchronization
System Score Found at
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31642.json
cvssv3 7.0 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31642.json
epss 0.00012 https://api.first.org/data/v1/epss?cve=CVE-2026-31642
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2026-31642
cvssv3.1 5.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31642.json
https://api.first.org/data/v1/epss?cve=CVE-2026-31642
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31642
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2461572 https://bugzilla.redhat.com/show_bug.cgi?id=2461572
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31642.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31642.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.01702
EPSS Score 0.00012
Published At April 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-25T23:21:38.197741+00:00 Debian Importer Import https://security-tracker.debian.org/tracker/data/json 38.4.0