CVE-2025-38515: drm/sched: Increment job count before swapping tail spsc queue
Noroxi assessment
Priority: Monitor (action score 18/100)
- 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: 0.16% (FIRST EPSS).
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
- Fixed version: Linux Linux 549a9c78c3ea6807d0dc4162a4f5ba59f217d5a0, 8af39ec5cf2be522c8eb43a3d8005ed59e4daaee, c64f5310530baf75328292f9b9f3f2961d185183; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1; cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 5.15.200.1-1.
Low priority for now. Upgrade to Linux Linux 549a9c78c3ea6807d0dc4162a4f5ba59f217d5a0, 8af39ec5cf2be522c8eb43a3d8005ed59e4daaee, c64f5310530baf75328292f9b9f3f2961d185183; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1; cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 5.15.200.1-1 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: drm/sched: Increment job count before swapping tail spsc queue A small race exists between spsc_queue_push and the run-job worker, in which spsc_queue_push may return not-first while the run-job worker has already idled due to the job count being zero. If this race occurs, job scheduling stops, leading to hangs while waiting on the job’s DMA fences. Seal this race by incrementing the job count before appending to the SPSC queue. This race was observed on a drm-tip 6.16-rc1 build with the Xe driver in an SVM test case.
- Published
- Aug 16, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.1% · 5th percentile
- CWE
- —
Report tools
Action score
18
Monitor
Low priority for now.
- CVSS
- 18 / 40 · 4.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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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.
We use this product, ask for helpAffected 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.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux11.0
- linux linux kernel5.5 and later · before 5.10.240
- linux linux kernel5.11 and later · before 5.15.189
- linux linux kernel5.16 and later · before 6.1.146
- linux linux kernel4.16 and later · before 5.4.296
- linux linux kernel6.7 and later · before 6.12.39
- linux linux kernel6.13 and later · before 6.15.7
- linux linux kernel6.2 and later · before 6.6.99
- linux linux kernel6.16
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
- 4.16affected
- 27105db6c63a571b91d01e749d026105a1e63bcf and later · before 549a9c78c3ea6807d0dc4162a4f5ba59f217d5a0affected · git
- 27105db6c63a571b91d01e749d026105a1e63bcf and later · before e62f51d0ec8a9baf324caf9a564f8e318d36a551affected · git
- 27105db6c63a571b91d01e749d026105a1e63bcf and later · before ef841f8e4e1ff67817ca899bedc5ebb00847c0a7affected · git
- 27105db6c63a571b91d01e749d026105a1e63bcf and later · before f9a4f28a4fc4ee453a92a9abbe36e26224d17749affected · git
- 27105db6c63a571b91d01e749d026105a1e63bcf and later · before c64f5310530baf75328292f9b9f3f2961d185183affected · git
- 27105db6c63a571b91d01e749d026105a1e63bcf and later · before e2d6547dc8b9b332f9bc00875197287a6a4db65aaffected · git
- 27105db6c63a571b91d01e749d026105a1e63bcf and later · before ef58a95457466849fa7b31fd3953801a5af0f58baffected · git
- 27105db6c63a571b91d01e749d026105a1e63bcf and later · before 8af39ec5cf2be522c8eb43a3d8005ed59e4daaeeaffected · git
- before 4.16not affected · semver
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 6.1.147-1 | 6.1.147-1 |
| Debian:13 | linux | before 6.12.41-1 | 6.12.41-1 |
| Debian:14 | linux | before 6.16.3-1 | 6.16.3-1 |
| openSUSE:Leap 16.0 | dtb-aarch64 | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-64kb | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-azure | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-default | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-default-base | before 6.12.0-160000.26.1.160000.2.7 | 6.12.0-160000.26.1.160000.2.7 |
| openSUSE:Leap 16.0 | kernel-docs | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-kvmsmall | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-obs-build | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-obs-qa | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-rt | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-source | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-syms | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| openSUSE:Leap 16.0 | kernel-zfcpdump | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| SUSE:Linux Enterprise Server 16.0 | kernel-azure | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| SUSE:Linux Enterprise Server 16.0 | kernel-docs | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| SUSE:Linux Enterprise Server 16.0 | kernel-kvmsmall | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| SUSE:Linux Enterprise Server 16.0 | kernel-obs-qa | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| SUSE:Linux Enterprise Server 16.0 | kernel-zfcpdump | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| SUSE:Linux Micro 6.2 | kernel-64kb | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| SUSE:Linux Micro 6.2 | kernel-default | before 6.12.0-160000.26.1 | 6.12.0-160000.26.1 |
| SUSE:Linux Micro 6.2 | kernel-default-base | before 6.12.0-160000.26.1.160000.2.7 | 6.12.0-160000.26.1.160000.2.7 |
+4
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- 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 KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
Published before and after this one in the same product
- ← EarlierCVE-2025-38508Aug 16, 2025 · x86/sev: Use TSC_FACTOR for Secure TSC frequency calculation22Monitor
- ← EarlierCVE-2025-38513Aug 16, 2025 · wifi: zd1211rw: Fix potential NULL pointer dereference in zd_mac_tx_to_dev()22Monitor
- Later →CVE-2025-38517Aug 16, 2025 · lib/alloc_tag: do not acquire non-existent lock in alloc_tag_top_users()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 / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 549a9c78c3ea6807d0dc4162a4f5ba59f217d5a0 | Vendor (CNA) |
| Linux Linux | 8af39ec5cf2be522c8eb43a3d8005ed59e4daaee | Vendor (CNA) |
| Linux Linux | c64f5310530baf75328292f9b9f3f2961d185183 | Vendor (CNA) |
| Linux Linux | e2d6547dc8b9b332f9bc00875197287a6a4db65a | Vendor (CNA) |
| Linux Linux | e62f51d0ec8a9baf324caf9a564f8e318d36a551 | Vendor (CNA) |
| Linux Linux | ef58a95457466849fa7b31fd3953801a5af0f58b | Vendor (CNA) |
| Linux Linux | ef841f8e4e1ff67817ca899bedc5ebb00847c0a7 | Vendor (CNA) |
| Linux Linux | f9a4f28a4fc4ee453a92a9abbe36e26224d17749 | Vendor (CNA) |
| azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 | 6.6.104.2-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 | 5.15.200.1-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| debian:linux | 6.1.147-1 · Debian:12 | Package registry (OSV) |
| opensuse:dtb-aarch64 | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-64kb | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-azure | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-default | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-default-base | 6.12.0-160000.26.1.160000.2.7 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-docs | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-obs-build | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-obs-qa | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-rt | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-source | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-syms | 6.12.0-160000.26.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| suse:kernel-64kb | 6.12.0-160000.26.1 · SUSE:Linux Micro 6.2 | Package registry (OSV) |
| suse:kernel-azure | 6.12.0-160000.26.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:kernel-default | 6.12.0-160000.26.1 · SUSE:Linux Micro 6.2 | Package registry (OSV) |
| suse:kernel-default-base | 6.12.0-160000.26.1.160000.2.7 · SUSE:Linux Micro 6.2 | Package registry (OSV) |
| suse:kernel-docs | 6.12.0-160000.26.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:kernel-kvmsmall | 6.12.0-160000.26.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:kernel-obs-build | 6.12.0-160000.26.1 · SUSE:Linux Micro Extras 6.2 | Package registry (OSV) |
+5
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 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.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:H/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.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (9 more)Show less
- git.kernel.org/stable/c/8af39ec5cf2be522c8eb43a3d8005ed59e4daaee
- git.kernel.org/stable/c/c64f5310530baf75328292f9b9f3f2961d185183
- git.kernel.org/stable/c/e2d6547dc8b9b332f9bc00875197287a6a4db65a
- git.kernel.org/stable/c/e62f51d0ec8a9baf324caf9a564f8e318d36a551
- git.kernel.org/stable/c/ef58a95457466849fa7b31fd3953801a5af0f58b
- git.kernel.org/stable/c/ef841f8e4e1ff67817ca899bedc5ebb00847c0a7
- git.kernel.org/stable/c/f9a4f28a4fc4ee453a92a9abbe36e26224d17749
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.