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NVD / CVE Program· CNA Linux

CVE-2025-38359: s390/mm: Fix in_atomic() handling in do_secure_storage_access()

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 11709abccf93b08adde95ef313c300b0d4bc28f1, 2990e937eaff741eda531f4190455ed7f3d5c348, 7aee3e5163cade3f4cf1cc0710dfbadb47f1ba84; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes.

Low priority for now. Upgrade to Linux Linux 11709abccf93b08adde95ef313c300b0d4bc28f1, 2990e937eaff741eda531f4190455ed7f3d5c348, 7aee3e5163cade3f4cf1cc0710dfbadb47f1ba84; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix in_atomic() handling in do_secure_storage_access() Kernel user spaces accesses to not exported pages in atomic context incorrectly try to resolve the page fault. With debug options enabled call traces like this can be seen: BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1523 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 419074, name: qemu-system-s39 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. Preemption disabled at: [<00000383ea47cfa2>] copy_page_from_iter_atomic+0xa2/0x8a0 CPU: 12 UID: 0 PID: 419074 Comm: qemu-system-s39 Tainted: G W 6.16.0-20250531.rc0.git0.69b3a602feac.63.fc42.s390x+debug #1 PREEMPT Tainted: [W]=WARN Hardware name: IBM 3931 A01 703 (LPAR) Call Trace: [<00000383e990d282>] dump_stack_lvl+0xa2/0xe8 [<00000383e99bf152>] __might_resched+0x292/0x2d0 [<00000383eaa7c374>] down_read+0x34/0x2d0 [<00000383e99432f8>] do_secure_storage_access+0x108/0x360 [<00000383eaa724b0>] __do_pgm_check+0x130/0x220 [<00000383eaa842e4>] pgm_check_handler+0x114/0x160 [<00000383ea47d028>] copy_page_from_iter_atomic+0x128/0x8a0 ([<00000383ea47d016>] copy_page_from_iter_atomic+0x116/0x8a0) [<00000383e9c45eae>] generic_perform_write+0x16e/0x310 [<00000383e9eb87f4>] ext4_buffered_write_iter+0x84/0x160 [<00000383e9da0de4>] vfs_write+0x1c4/0x460 [<00000383e9da123c>] ksys_write+0x7c/0x100 [<00000383eaa7284e>] __do_syscall+0x15e/0x280 [<00000383eaa8417e>] system_call+0x6e/0x90 INFO: lockdep is turned off. It is not allowed to take the mmap_lock while in atomic context. Therefore handle such a secure storage access fault as if the accessed page is not mapped: the uaccess function will return -EFAULT, and the caller has to deal with this. Usually this means that the access is retried in process context, which allows to resolve the page fault (or in this case export the page).

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 25, 2025
Updated
Oct 30, 2026
EPSS
0.1% · 6th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 6.15.5

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.7affected
    • 084ea4d611a3d00ee3930400b262240e10895900 and later · before 2990e937eaff741eda531f4190455ed7f3d5c348affected · git
    • 084ea4d611a3d00ee3930400b262240e10895900 and later · before 9bcfbd58fc5a02777fed3e582f22503ef3289a43affected · git
    • 084ea4d611a3d00ee3930400b262240e10895900 and later · before 7aee3e5163cade3f4cf1cc0710dfbadb47f1ba84affected · git
    • 084ea4d611a3d00ee3930400b262240e10895900 and later · before d2e317dfd2d1fe416c77315d17c5d57dbe374915affected · git
    • 084ea4d611a3d00ee3930400b262240e10895900 and later · before 11709abccf93b08adde95ef313c300b0d4bc28f1affected · git
    • before 5.7not affected · semver
    • 6.1.191 and later · up to and including 6.1.*not affected · semver
    • 6.6.160 and later · up to and including 6.6.*not affected · semver
    • 6.12.114 and later · up to and including 6.12.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:14linuxbefore 6.16.3-16.16.3-1
openSUSE:Leap 15.6dtb-aarch64before 6.4.0-150600.23.81.16.4.0-150600.23.81.1
openSUSE:Leap 15.6kernel-64kbbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-azurebefore 6.4.0-150600.8.58.16.4.0-150600.8.58.1
openSUSE:Leap 15.6kernel-debugbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-defaultbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-default-basebefore 6.4.0-150600.23.81.3.150600.12.36.36.4.0-150600.23.81.3.150600.12.36.3
openSUSE:Leap 15.6kernel-docsbefore 6.4.0-150600.23.81.16.4.0-150600.23.81.1
openSUSE:Leap 15.6kernel-kvmsmallbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-obs-buildbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-obs-qabefore 6.4.0-150600.23.81.16.4.0-150600.23.81.1
openSUSE:Leap 15.6kernel-rtbefore 6.4.0-150600.10.61.16.4.0-150600.10.61.1
openSUSE:Leap 15.6kernel-rt_debugbefore 6.4.0-150600.10.61.16.4.0-150600.10.61.1
openSUSE:Leap 15.6kernel-sourcebefore 6.4.0-150600.23.81.26.4.0-150600.23.81.2
openSUSE:Leap 15.6kernel-source-azurebefore 6.4.0-150600.8.58.16.4.0-150600.8.58.1
openSUSE:Leap 15.6kernel-source-rtbefore 6.4.0-150600.10.61.16.4.0-150600.10.61.1
openSUSE:Leap 15.6kernel-symsbefore 6.4.0-150600.23.81.16.4.0-150600.23.81.1
openSUSE:Leap 15.6kernel-syms-azurebefore 6.4.0-150600.8.58.16.4.0-150600.8.58.1
openSUSE:Leap 15.6kernel-syms-rtbefore 6.4.0-150600.10.61.16.4.0-150600.10.61.1
openSUSE:Leap 15.6kernel-zfcpdumpbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_18before 1-150600.13.3.31-150600.13.3.3
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6-RT_Update_18before 1-150600.1.3.11-150600.1.3.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_7before 1-150700.15.3.11-150700.15.3.1

+36

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-38465Jul 25, 2025 · netlink: Fix wraparounds of sk->sk_rmem_alloc.
    22Monitor
  • ← EarlierCVE-2025-38467Jul 25, 2025 · drm/exynos: exynos7_drm_decon: add vblank check in IRQ handling
    22Monitor
  • Later →CVE-2025-38372Jul 25, 2025 · RDMA/mlx5: Fix unsafe xarray access in implicit ODP handling
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux11709abccf93b08adde95ef313c300b0d4bc28f1Vendor (CNA)
Linux Linux2990e937eaff741eda531f4190455ed7f3d5c348Vendor (CNA)
Linux Linux7aee3e5163cade3f4cf1cc0710dfbadb47f1ba84Vendor (CNA)
Linux Linux9bcfbd58fc5a02777fed3e582f22503ef3289a43Vendor (CNA)
Linux Linuxd2e317dfd2d1fe416c77315d17c5d57dbe374915Vendor (CNA)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
debian:linux6.16.3-1 · Debian:14Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.81.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.81.3.150600.12.36.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.81.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-kvmsmall6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-build6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-qa6.4.0-150600.23.81.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source6.4.0-150600.23.81.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms6.4.0-150600.23.81.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-zfcpdump6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
suse:kernel-64kb6.4.0-150600.23.81.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-64kb6.4.0-150700.53.25.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-azure6.4.0-150600.8.58.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150600.23.81.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150700.53.25.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-default-base6.4.0-150600.23.81.3.150600.12.36.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default-base6.4.0-150700.53.25.1.150700.17.17.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-docs6.4.0-150600.23.81.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)
suse:kernel-docs6.4.0-150700.53.25.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_181-150600.13.3.3 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)

+10

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-667 · Improper Locking

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records