s390: avoid using global register for current_stack_pointer
In the Linux kernel, the following vulnerability has been resolved: s390: avoid using global register for current_stack_pointer Commit 30de14b1884b ("s390: current_stack_pointer shouldn't be a function") made current_stack_pointer a global register variable like on many other architectures. Unfortunately on s390 it uncovers old gcc bug which is fixed only since gcc-9.1 [gcc commit 3ad7fed1cc87 ("S/390: Fix PR89775. Stackpointer save/restore instructions removed")] and backported to gcc-8.4 and later. Due to this bug gcc versions prior to 8.4 generate broken code which leads to stack corruptions. Current minimal gcc version required to build the kernel is declared as 5.1. It is not possible to fix all old gcc versions, so work around this problem by avoiding using global register variable for current_stack_pointer.
- Published
- May 1, 2025
- Updated
- Aug 5, 2026
- EPSS
- 0.2% · 8th percentile
- CWE
- CWE-787
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CNA vs NVD score
- NVD
- 7.8
- CNA · Linux
- 7.8
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel5.18.1 and later · before 6.0.10
- linux linux kernel5.18
- linux linux kernel6.1
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
- 5.18affected
- 30de14b1884ba609fc1acfba5b40309e3a6ccefe and later · before a478952a8ac44e32316dc046a063a7dc34825aa6affected · git
- 30de14b1884ba609fc1acfba5b40309e3a6ccefe and later · before e3c11025bcd2142a61abe5806b2f86a0e78118dfaffected · git
- before 5.18not affected · semver
- 6.0.10 and later · up to and including 6.0.*not affected · semver
- 6.1 and laternot affected · original_commit_for_fix
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.0.10-1 | 6.0.10-1 |
| Red Hat:enterprise_linux:9::appstream | kernel-64k-debug-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-64k-debug-devel | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-64k-debug-devel-matched | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-64k-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-64k-devel | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-64k-devel-matched | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-debug-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-debug-devel | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-debug-devel-matched | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-debuginfo-common-aarch64 | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-debuginfo-common-ppc64le | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-debuginfo-common-s390x | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-debuginfo-common-x86_64 | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-devel | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-devel-matched | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-doc | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-rt-64k-debug-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-rt-64k-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-rt-debug-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-rt-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-tools-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
| Red Hat:enterprise_linux:9::appstream | kernel-zfcpdump-debuginfo | before 0:5.14.0-570.12.1.el9_6 | 0:5.14.0-570.12.1.el9_6 |
+68
Same product
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- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
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Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | a478952a8ac44e32316dc046a063a7dc34825aa6 | Vendor (CNA) |
| Linux Linux | e3c11025bcd2142a61abe5806b2f86a0e78118df | Vendor (CNA) |
| debian:linux | 6.0.10-1 · Debian:12 | Package registry (OSV) |
| red hat:kernel-64k-debug-debuginfo | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel-matched | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debuginfo | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel-matched | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-devel-matched | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debuginfo-common-aarch64 | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debuginfo-common-ppc64le | 0:5.14.0-570.12.1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
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.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
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 researchersFinders, 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
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/a478952a8ac44e32316dc046a063a7dc34825aa6
- git.kernel.org/stable/c/e3c11025bcd2142a61abe5806b2f86a0e78118df
Vendor advisories and official records. Exploit/PoC links are deliberately left out.