powerpc/powernv: Add a null pointer check in opal_event_init()
Priority LOW 24CWE-476Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 12 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv: Add a null pointer check in opal_event_init() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00252 16th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.306, 5.4.268, 5.10.209 +5Red Hat: 3 advisoriesRed Hat: 12 fixed, 2 without a fix
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.11 and later | 4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8 | Patch available | CNA |
- Linux VendorLinux Affected 4.11 and later Fixed in 4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.11 to before 4.19.306; 4.20 to before 5.4.268; 5.5 to before 5.10.209; 5.11 to before 5.15.148; 5.16 to before 6.1.75; 6.2 to before 6.6.14; 6.7 to before 6.7.2 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.11 to before 4.19.306; 4.20 to before 5.4.268; 5.5 to before 5.10.209; 5.11 to before 5.15.148; 5.16 to before 6.1.75; 6.2 to before 6.6.14; 6.7 to before 6.7.2 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8
Red Hat 3 advisories
- RHSA-2025:15016 Released 2025-09-02 · Red Hat rating Importantkernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.85.1.el9_4, libperf-5.14.0-427.85.1.el9_4
- Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.85.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.85.1.el9_4, kernel-64k-devel-5.14.0-427.85.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.85.1.el9_4, kernel-5.14.0-427.85.1.el9_4, kernel-64k-5.14.0-427.85.1.el9_4 +29
- Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.85.1.el9_4, kernel-rt-core-5.14.0-427.85.1.el9_4, kernel-rt-debug-5.14.0-427.85.1.el9_4 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.85.1.el9_4, kernel-rt-core-5.14.0-427.85.1.el9_4, kernel-rt-debug-5.14.0-427.85.1.el9_4 +11
- RHSA-2024:9315 Released 2024-11-12 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder (v. 9) kernel-cross-headers-5.14.0-503.11.1.el9_5, kernel-tools-libs-devel-5.14.0-503.11.1.el9_5, libperf-5.14.0-503.11.1.el9_5
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.11.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.11.1.el9_5, kernel-64k-devel-5.14.0-503.11.1.el9_5 +12
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.11.1.el9_5, kernel-5.14.0-503.11.1.el9_5, kernel-64k-5.14.0-503.11.1.el9_5 +30
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +9
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +11
- RHSA-2024:4211 Released 2024-07-02 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.8.1.el8_10, kernel-4.18.0-553.8.1.el8_10, kernel-abi-stablelists-4.18.0-553.8.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.8.1.el8_10
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2025:15016 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2025:15016 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:4211 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2025:15016 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:4211 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux Real Time EUS (v.9.4) | Fixed | RHSA-2025:15016 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) | Fixed | RHSA-2025:15016 |
Not affected: 4 products
- Red Hat CodeReady Linux Builder (v. 9)
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux AppStream (v. 9)
- Red Hat Enterprise Linux BaseOS (v. 8)
Timeline
- 2026-10-02 Threatist record created from CVE-2023-52686
- 2026-10-03 Alias added: GHSA-7g29-9wjm-w488
- 2026-10-29 Affected versions changed · Red Hat
References
Patch 8
- https://git.kernel.org/stable/c/8422d179cf46889c15ceff9ede48c5bfa4e7f0b4
- https://git.kernel.org/stable/c/e93d7cf4c1ddbcd846739e7ad849f955a4f18031
- https://git.kernel.org/stable/c/e6ad05e3ae9c84c5a71d7bb2d44dc845ae7990cf
- https://git.kernel.org/stable/c/c0b111ea786ddcc8be0682612830796ece9436c7
- https://git.kernel.org/stable/c/9a523e1da6d88c2034f946adfa4f74b236c95ca9
- https://git.kernel.org/stable/c/a14c55eb461d630b836f80591d8caf1f74e62877
- https://git.kernel.org/stable/c/e08c2e275fa1874de945b87093f925997722ee42
- https://git.kernel.org/stable/c/8649829a1dd25199bbf557b2621cedb4bf9b3050
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- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2023-52686 · CVE Program
- CVE-2023-52686 · NVD
- FIRST EPSS
- GHSA-7g29-9wjm-w488 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-52686 · 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