An issue was discovered in the Linux kernel before 6.6.8.
Priority LOW 31CWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 9 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
An issue was discovered in the Linux kernel before 6.6.8. do_vcc_ioctl in net/atm/ioctl.c has a use-after-free because of a vcc_recvmsg race condition.
Why it matters now
EPSS 0.0051 43rd percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 9 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | after 2.6.12, before 6.6.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:* | 2.6.12 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:* | 2.6.12 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:* | 2.6.12 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:* | 2.6.12 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.12:rc6:*:*:*:*:*:* | 2.6.12 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:* | 6.7 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:* | 6.7 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:* | 6.7 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:* | 6.7 rc4 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions after 2.6.12, before 6.6.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:* Versions 2.6.12 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:* Versions 2.6.12 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:* Versions 2.6.12 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:* Versions 2.6.12 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc6:*:*:*:*:*:* Versions 2.6.12 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:* Versions 6.7 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:* Versions 6.7 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:* Versions 6.7 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:* Versions 6.7 rc4 Vulnerable ·Linux
Remediation
Red Hat 3 advisories
- RHSA-2024:2950 Released 2024-05-22 · Red Hat rating Moderatekernel-rt security and bug fix update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.rt7.342.el8_10, kernel-rt-core-4.18.0-553.rt7.342.el8_10, kernel-rt-debug-4.18.0-553.rt7.342.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.rt7.342.el8_10, kernel-rt-core-4.18.0-553.rt7.342.el8_10, kernel-rt-debug-4.18.0-553.rt7.342.el8_10 +7
- RHSA-2024:3138 Released 2024-05-22 · Red Hat rating Moderatekernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.el8_10, kernel-4.18.0-553.el8_10, kernel-abi-stablelists-4.18.0-553.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.el8_10
- RHSA-2024:2394 Released 2024-04-30 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.13.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.13.1.el9_4, kernel-64k-devel-5.14.0-427.13.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.13.1.el9_4, kernel-5.14.0-427.13.1.el9_4, kernel-64k-5.14.0-427.13.1.el9_4 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.13.1.el9_4, libperf-5.14.0-427.13.1.el9_4
- Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.13.1.el9_4, kernel-rt-core-5.14.0-427.13.1.el9_4, kernel-rt-debug-5.14.0-427.13.1.el9_4 +11
- Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.13.1.el9_4, kernel-rt-core-5.14.0-427.13.1.el9_4, kernel-rt-debug-5.14.0-427.13.1.el9_4 +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 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:2394 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:3138 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:2394 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:3138 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:2394 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:2950 |
| Red Hat Enterprise Linux NFV (v. 9) | Fixed | RHSA-2024:2394 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:2950 |
| Red Hat Enterprise Linux RT (v. 9) | Fixed | RHSA-2024:2394 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-51780
- 2026-10-03 Alias added: GHSA-h76p-mprh-fvmv
References
Advisory 2
Sources
- CVE-2023-51780 · CVE Program
- CVE-2023-51780 · NVD
- FIRST EPSS
- GHSA-h76p-mprh-fvmv · GitHub Advisory Database · CC BY 4.0
- CVE-2023-51780 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences