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.
References
Configurations
Configuration 1 (hide)
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History
07 May 2026, 18:21
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/378949f46e897204384f3f5f91e42e93e3f87568 - Patch | |
| References | () https://git.kernel.org/stable/c/5c8ecdcfbfb0b0c6a82a4ebadc1ddea61609b902 - Patch | |
| References | () https://git.kernel.org/stable/c/c23df30915f83e7257c8625b690a1cece94142a0 - Patch | |
| References | () https://git.kernel.org/stable/c/d6565ea662e17d45a577184b0011bd69de22dc2b - Patch | |
| References | () https://git.kernel.org/stable/c/d9d8360cb66e3b599d89d2526e7da8b530ebf2ff - Patch | |
| References | () https://git.kernel.org/stable/c/da40464064599eefe78749f75cd2bba371044c04 - Patch | |
| References | () https://git.kernel.org/stable/c/e83e20b82859f0588e9a52a6fa9fea704a2061cf - Patch | |
| CWE | CWE-667 | |
| First Time |
Linux linux Kernel
Linux |
27 Apr 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
22 Apr 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-22 14:16
Updated : 2026-05-07 18:21
NVD link : CVE-2026-31467
Mitre link : CVE-2026-31467
CVE.ORG link : CVE-2026-31467
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-667
Improper Locking