udmabuf: fix a buf size overflow issue during udmabuf creation
Priority LOW 36CWE-120Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-120 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: udmabuf: fix a buf size overflow issue during udmabuf creation by casting size_limit_mb to u64 when calculate pglimit.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0025 16th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.4.293, 5.10.237, 5.15.181 +5Red Hat: 5 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.20 and later | 5.4.293, 5.10.237, 5.15.181, 6.1.136, 6.6.89, 6.12.57, 6.14.5, 6.15 | Patch available | CNA |
- Linux VendorLinux Affected 4.20 and later Fixed in 5.4.293, 5.10.237, 5.15.181, 6.1.136, 6.6.89, 6.12.57, 6.14.5, 6.15 Patch available CNA
CPE configurations NVD · 2
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.293, 5.10.237, 5.15.181, 6.1.136, 6.6.89, 6.12.57, 6.14.5, 6.15
Red Hat 5 advisories
- RHSA-2025:15447 Released 2025-09-08 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-55.31.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.31.1.el10_0, kernel-64k-devel-6.12.0-55.31.1.el10_0 +12
- Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-55.31.1.el10_0, kernel-64k-6.12.0-55.31.1.el10_0, kernel-64k-core-6.12.0-55.31.1.el10_0 +28
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-55.31.1.el10_0, libperf-6.12.0-55.31.1.el10_0
- Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-55.31.1.el10_0, kernel-rt-64k-6.12.0-55.31.1.el10_0, kernel-rt-64k-core-6.12.0-55.31.1.el10_0 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-55.31.1.el10_0, kernel-rt-core-6.12.0-55.31.1.el10_0, kernel-rt-debug-6.12.0-55.31.1.el10_0 +11
- RHSA-2025:15429 Released 2025-09-08 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-570.41.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.41.1.el9_6, kernel-64k-devel-5.14.0-570.41.1.el9_6 +12
- Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-570.41.1.el9_6, kernel-64k-5.14.0-570.41.1.el9_6, kernel-64k-core-5.14.0-570.41.1.el9_6 +28
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-570.41.1.el9_6, libperf-5.14.0-570.41.1.el9_6
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-570.41.1.el9_6, kernel-rt-64k-5.14.0-570.41.1.el9_6, kernel-rt-64k-core-5.14.0-570.41.1.el9_6 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-570.41.1.el9_6, kernel-rt-core-5.14.0-570.41.1.el9_6, kernel-rt-debug-5.14.0-570.41.1.el9_6 +11
- RHSA-2025:11810 Released 2025-07-28 · Red Hat rating Importantkernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.79.1.el9_4, libperf-5.14.0-427.79.1.el9_4
- Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.79.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.79.1.el9_4, kernel-64k-devel-5.14.0-427.79.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.79.1.el9_4, kernel-5.14.0-427.79.1.el9_4, kernel-64k-5.14.0-427.79.1.el9_4 +29
- Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.79.1.el9_4, kernel-rt-core-5.14.0-427.79.1.el9_4, kernel-rt-debug-5.14.0-427.79.1.el9_4 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.79.1.el9_4, kernel-rt-core-5.14.0-427.79.1.el9_4, kernel-rt-debug-5.14.0-427.79.1.el9_4 +11
Show 2 more Red Hat advisories
- RHSA-2025:11571 Released 2025-07-23 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.126.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.126.1.el9_2, kernel-64k-devel-5.14.0-284.126.1.el9_2 +10
- Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.126.1.el9_2, kernel-5.14.0-284.126.1.el9_2, kernel-64k-5.14.0-284.126.1.el9_2 +29
- RHSA-2025:11572 Released 2025-07-23 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.126.1.rt14.411.el9_2, kernel-rt-core-5.14.0-284.126.1.rt14.411.el9_2, kernel-rt-debug-5.14.0-284.126.1.rt14.411.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.126.1.rt14.411.el9_2, kernel-rt-core-5.14.0-284.126.1.rt14.411.el9_2, kernel-rt-debug-5.14.0-284.126.1.rt14.411.el9_2 +11
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2025:11810 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2025:15447 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2025:15429 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2025:11571 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2025:11810 |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2025:15447 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2025:15429 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.2) | Fixed | RHSA-2025:11571 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2025:11810 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2025:15447 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2025:15429 |
| Red Hat Enterprise Linux Real Time (v. 10) | Fixed | RHSA-2025:15447 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2025:15429 |
| Red Hat Enterprise Linux Real Time E4S (v.9.2) | Fixed | RHSA-2025:11572 |
| Red Hat Enterprise Linux Real Time EUS (v.9.4) | Fixed | RHSA-2025:11810 |
| Red Hat Enterprise Linux Real Time for NFV (v. 10) | Fixed | RHSA-2025:15447 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2025:15429 |
| Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) | Fixed | RHSA-2025:11572 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) | Fixed | RHSA-2025:11810 |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-37803
- 2026-10-03 Alias added: GHSA-42fq-x79v-5vv5
References
Patch 7
- https://git.kernel.org/stable/c/e84a08fc7e25cdad5d9a3def42cc770ff711193f
- https://git.kernel.org/stable/c/13fe12c037b470321436deec393030c6153cfeb9
- https://git.kernel.org/stable/c/373512760e13fdaa726faa9502d0f5be2abb3d33
- https://git.kernel.org/stable/c/3f6c9d66e0f8eb9679b57913aa64b4d2266f6fbe
- https://git.kernel.org/stable/c/b2ff4e9c599b000833d16a917f519aa2e4a75de2
- https://git.kernel.org/stable/c/2b8419c6ecf69007dcff54ea0b9f0b215282c55a
- https://git.kernel.org/stable/c/021ba7f1babd029e714d13a6bf2571b08af96d0f
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- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2025-37803 · CVE Program
- CVE-2025-37803 · NVD
- FIRST EPSS
- GHSA-42fq-x79v-5vv5 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-37803 · Red Hat security data · CC BY 4.0
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