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CVE-2025-38445

md/raid1: Fix stack memory use after return in raid1_reshape

HIGH 7.1

At a glance

Source
NVD
EPSS
EPSS 0.20 % · percentile 10 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid1: Fix stack memory use after return in raid1_reshape In the raid1_reshape function, newpool is allocated on the stack and assigned to conf->r1bio_pool. This results in conf->r1bio_pool.wait.head pointing to a stack address. Accessing this address later can lead to a kernel panic. Example access path: raid1_reshape() { // newpool is on the stack mempool_t newpool, oldpool; // initialize newpool.wait.head to stack address mempool_init(&newpool, ...); conf->r1bio_pool = newpool; } raid1_read_request() or raid1_write_request() { alloc_r1bio() { mempool_alloc() { // if pool->alloc fails remove_element() { --pool->curr_nr; } } } } mempool_free() { if (pool->curr_nr < pool->min_nr) { // pool->wait.head is a stack address // wake_up() will try to access this invalid address // which leads to a kernel panic return; wake_up(&pool->wait); } } Fix: reinit conf->r1bio_pool.wait after assigning newpool.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected afeee514ce7f4cab605beedd03be71ebaf0c5fc8 < d8a6853d00fbaa810765c8ed2f452a5832273968 ; affected afeee514ce7f4cab605beedd03be71ebaf0c5fc8 < 12b00ec99624f8da8c325f2dd6e807df26df0025 ; affected afeee514ce7f4cab605beedd03be71ebaf0c5fc8 < 48da050b4f54ed639b66278d0ae6f4107b2c4e2d ; affected afeee514ce7f4cab605beedd03be71ebaf0c5fc8 < 5f35e48b76655e45522df338876dfef88dafcc71 ; affected afeee514ce7f4cab605beedd03be71ebaf0c5fc8 < df5894014a92ff0196dbc212a7764e97366fd2b7 ; affected afeee514ce7f4cab605beedd03be71ebaf0c5fc8 < 776e6186dc9ecbdb8a1b706e989166c8a99bbf64
Linux · Linuxaffected 4.18 ; unaffected 0 < 4.18 ; unaffected 5.4.296 ≤ 5.4.* ; unaffected 5.10.240 ≤ 5.10.* ; unaffected 5.15.189 ≤ 5.15.* ; unaffected 6.1.146 ≤ 6.1.*

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