drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 45 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE This data originates from userspace and is used in buffer offset calculations which could potentially overflow causing an out-of-bounds access.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.302, 5.10.247, 5.15.197, 6.1.159, 6.6.117, 6.12.59, 6.17.9, 6.18
Red Hat 15 advisories
- RHSA-2026:1886 Released 2026-02-04 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.184.1.el8_4, kernel-4.18.0-305.184.1.el8_4, kernel-abi-stablelists-4.18.0-305.184.1.el8_4 +14
- Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.184.1.el8_4, kernel-4.18.0-305.184.1.el8_4, kernel-abi-stablelists-4.18.0-305.184.1.el8_4 +14
- RHSA-2026:1512 Released 2026-01-28 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.183.1.el8_2, kernel-4.18.0-193.183.1.el8_2, kernel-abi-whitelists-4.18.0-193.183.1.el8_2 +14
- RHSA-2026:1494 Released 2026-01-28 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.163.1.el9_0, kernel-debug-devel-matched-5.14.0-70.163.1.el9_0, kernel-devel-5.14.0-70.163.1.el9_0 +5
- Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.163.1.el9_0, kernel-5.14.0-70.163.1.el9_0, kernel-abi-stablelists-5.14.0-70.163.1.el9_0 +14
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- RHSA-2026:1495 Released 2026-01-28 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-core-5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-5.14.0-70.163.1.rt21.235.el9_0 +9
- Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-core-5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-5.14.0-70.163.1.rt21.235.el9_0 +7
- RHSA-2026:1442 Released 2026-01-28 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.177.1.el8_6, kernel-4.18.0-372.177.1.el8_6, kernel-abi-stablelists-4.18.0-372.177.1.el8_6 +14
- Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.177.1.el8_6, kernel-4.18.0-372.177.1.el8_6, kernel-abi-stablelists-4.18.0-372.177.1.el8_6 +19
- Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.177.1.el8_6, kernel-4.18.0-372.177.1.el8_6, kernel-abi-stablelists-4.18.0-372.177.1.el8_6 +14
- RHSA-2026:1441 Released 2026-01-28 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.154.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.154.1.el9_2, kernel-64k-devel-5.14.0-284.154.1.el9_2 +10
- Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.154.1.el9_2, kernel-5.14.0-284.154.1.el9_2, kernel-64k-5.14.0-284.154.1.el9_2 +29
- RHSA-2026:1445 Released 2026-01-28 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.126.1.el8_8, kernel-4.18.0-477.126.1.el8_8, kernel-abi-stablelists-4.18.0-477.126.1.el8_8 +14
- Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.126.1.el8_8, kernel-4.18.0-477.126.1.el8_8, kernel-abi-stablelists-4.18.0-477.126.1.el8_8 +14
- RHSA-2026:1443 Released 2026-01-28 · Red Hat rating Moderatekernel-rt security update
- Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-core-5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-debug-5.14.0-284.154.1.rt14.439.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-core-5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-debug-5.14.0-284.154.1.rt14.439.el9_2 +11
- RHSA-2026:1236 Released 2026-01-26 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.55.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.55.1.el10_0, kernel-64k-devel-6.12.0-55.55.1.el10_0 +12
- Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.55.1.el10_0, kernel-64k-6.12.0-55.55.1.el10_0, kernel-64k-core-6.12.0-55.55.1.el10_0 +28
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- Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.55.1.el10_0, kernel-rt-core-6.12.0-55.55.1.el10_0, kernel-rt-debug-6.12.0-55.55.1.el10_0 +11
- RHSA-2026:1194 Released 2026-01-26 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.81.1.el9_6, libperf-5.14.0-570.81.1.el9_6
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- Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.81.1.el9_6, kernel-64k-5.14.0-570.81.1.el9_6, kernel-64k-core-5.14.0-570.81.1.el9_6 +28
- Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.81.1.el9_6, kernel-rt-64k-5.14.0-570.81.1.el9_6, kernel-rt-64k-core-5.14.0-570.81.1.el9_6 +21
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- RHSA-2026:1142 Released 2026-01-26 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.97.1.el8_10, kernel-4.18.0-553.97.1.el8_10, kernel-abi-stablelists-4.18.0-553.97.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.97.1.el8_10
- RHSA-2026:1148 Released 2026-01-26 · Red Hat rating Importantkernel-rt security update
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- RHSA-2026:0917 Released 2026-01-21 · Red Hat rating Moderatekernel security update
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- RHSA-2026:0793 Released 2026-01-19 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-611.24.1.el9_7, kernel-64k-debug-devel-matched-5.14.0-611.24.1.el9_7, kernel-64k-devel-5.14.0-611.24.1.el9_7 +12
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- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-611.24.1.el9_7, libperf-5.14.0-611.24.1.el9_7
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- RHSA-2026:0453 Released 2026-01-12 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-124.27.1.el10_1, kernel-64k-debug-devel-matched-6.12.0-124.27.1.el10_1, kernel-64k-devel-6.12.0-124.27.1.el10_1 +12
- Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-124.27.1.el10_1, kernel-64k-6.12.0-124.27.1.el10_1, kernel-64k-core-6.12.0-124.27.1.el10_1 +29
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-124.27.1.el10_1, libperf-6.12.0-124.27.1.el10_1
- Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-124.27.1.el10_1, kernel-rt-64k-6.12.0-124.27.1.el10_1, kernel-rt-64k-core-6.12.0-124.27.1.el10_1 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-124.27.1.el10_1, kernel-rt-core-6.12.0-124.27.1.el10_1, kernel-rt-debug-6.12.0-124.27.1.el10_1 +9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2026:0917 |
| Red Hat CodeReady Linux Builder EUS (v.9.6) | Fixed | RHSA-2026:1194 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:0453 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:0793 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2026:1494 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:1441 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2026:0917 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:1194 |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2026:0453 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2026:1142 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2026:0793 |
| Red Hat Enterprise Linux BaseOS AUS (v. 8.2) | Fixed | RHSA-2026:1512 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.4) | Fixed | RHSA-2026:1886 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2026:1442 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.6) | Fixed | RHSA-2026:1442 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.8) | Fixed | RHSA-2026:1445 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.0) | Fixed | RHSA-2026:1494 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.2) | Fixed | RHSA-2026:1441 |
| Red Hat Enterprise Linux BaseOS EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2026:0917 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.6) | Fixed | RHSA-2026:1194 |
| Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) | Fixed | RHSA-2026:1886 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.6) | Fixed | RHSA-2026:1442 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.8) | Fixed | RHSA-2026:1445 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2026:1142 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:0453 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:0793 |
| Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2026:1148 |
| Red Hat Enterprise Linux NFV E4S (v.9.0) | Fixed | RHSA-2026:1495 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2026:1148 |
| Red Hat Enterprise Linux Real Time (v. 10) | Fixed | RHSA-2026:0453 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2026:0793 |
| Red Hat Enterprise Linux Real Time E4S (v.9.0) | Fixed | RHSA-2026:1495 |
| Red Hat Enterprise Linux Real Time E4S (v.9.2) | Fixed | RHSA-2026:1443 |
| Red Hat Enterprise Linux Real Time EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux Real Time EUS (v.9.4) | Fixed | RHSA-2026:0917 |
| Red Hat Enterprise Linux Real Time EUS (v.9.6) | Fixed | RHSA-2026:1194 |
| Red Hat Enterprise Linux Real Time for NFV (v. 10) | Fixed | RHSA-2026:0453 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2026:0793 |
| Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) | Fixed | RHSA-2026:1443 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) | Fixed | RHSA-2026:0917 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) | Fixed | RHSA-2026:1194 |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2025-40277
- 2026-10-03 Alias added: GHSA-6jjc-g279-fq4c
References
Other 8
- https://git.kernel.org/stable/c/e58559845021c3bad5e094219378b869157fad53
- https://git.kernel.org/stable/c/54d458b244893e47bda52ec3943fdfbc8d7d068b
- https://git.kernel.org/stable/c/709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173
- https://git.kernel.org/stable/c/a3abb54c27b2c393c44362399777ad2f6e1ff17e
- https://git.kernel.org/stable/c/b5df9e06eed3df6a4f5c6f8453013b0cabb927b4
- https://git.kernel.org/stable/c/5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc
- https://git.kernel.org/stable/c/f3f3a8eb3f0ba799fae057091d8c67cca12d6fa0
- https://git.kernel.org/stable/c/32b415a9dc2c212e809b7ebc2b14bc3fbda2b9af
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Sources
- CVE-2025-40277 · CVE Program
- CVE-2025-40277 · NVD
- FIRST EPSS
- GHSA-6jjc-g279-fq4c · GitHub Advisory Database · CC BY 4.0
- CVE-2025-40277 · Red Hat security data · CC BY 4.0
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