erofs: add GFP_NOIO in the bio completion if needed (Linux Linux)

CVE-2026-31467
HIGH 7.5

At a glance

Source
NVD
EPSS
EPSS 0.38 % · percentile 32 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

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.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HLinux
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 648f2de053a882c87c05f0060f47d3b11841fdbe < d6565ea662e17d45a577184b0011bd69de22dc2b ; affected 648f2de053a882c87c05f0060f47d3b11841fdbe < d9d8360cb66e3b599d89d2526e7da8b530ebf2ff ; affected 648f2de053a882c87c05f0060f47d3b11841fdbe < 5c8ecdcfbfb0b0c6a82a4ebadc1ddea61609b902 ; affected 648f2de053a882c87c05f0060f47d3b11841fdbe < 378949f46e897204384f3f5f91e42e93e3f87568 ; affected 648f2de053a882c87c05f0060f47d3b11841fdbe < da40464064599eefe78749f75cd2bba371044c04 ; affected 648f2de053a882c87c05f0060f47d3b11841fdbe < e83e20b82859f0588e9a52a6fa9fea704a2061cf
Linux · Linuxaffected 5.13 ; unaffected 0 < 5.13 ; unaffected 5.15.203 ≤ 5.15.* ; unaffected 6.1.168 ≤ 6.1.* ; unaffected 6.6.131 ≤ 6.6.* ; unaffected 6.12.80 ≤ 6.12.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD