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Vulnerability details: VCID-xh1w-u484-dbet
Vulnerability ID VCID-xh1w-u484-dbet
Aliases CVE-2026-31467
Summary In the Linux kernel, the following vulnerability has been resolved: erofs: add GFP_NOIO in the bio completion if needed The bio completion path in the process context (e.g. dm-verity) will directly call into decompression rather than trigger another workqueue context for minimal scheduling latencies, which can then call vm_map_ram() with GFP_KERNEL. Due to insufficient memory, vm_map_ram() may generate memory swapping I/O, which can cause submit_bio_wait to deadlock in some scenarios. Trimmed down the call stack, as follows: f2fs_submit_read_io submit_bio //bio_list is initialized. mmc_blk_mq_recovery z_erofs_endio vm_map_ram __pte_alloc_kernel __alloc_pages_direct_reclaim shrink_folio_list __swap_writepage submit_bio_wait //bio_list is non-NULL, hang!!! Use memalloc_noio_{save,restore}() to wrap up this path.
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-833 Deadlock
System Score Found at
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31467.json
epss 0.00024 https://api.first.org/data/v1/epss?cve=CVE-2026-31467
epss 0.00024 https://api.first.org/data/v1/epss?cve=CVE-2026-31467
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2026-31467
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2026-31467
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31467.json
https://api.first.org/data/v1/epss?cve=CVE-2026-31467
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31467
2460616 https://bugzilla.redhat.com/show_bug.cgi?id=2460616
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-2026-31467.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
Exploit Prediction Scoring System (EPSS)
Percentile 0.06773
EPSS Score 0.00024
Published At April 24, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-23T05:41:00.376420+00:00 Debian Importer Import https://security-tracker.debian.org/tracker/data/json 38.4.0