tracing/histogram: Fix a potential memory leak for kstrdup()
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: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-401.
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing/histogram: Fix a potential memory leak for kstrdup() kfree() is missing on an error path to free the memory allocated by kstrdup(): p = param = kstrdup(data->params[i], GFP_KERNEL); So it is better to free it via kfree(p).
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.4.19 to before 5.4.176; 5.5.6 to before 5.6 | 5.4.176, 5.6 | Patch available | CNA |
| Linux | Linux | 5.6 and later | 5.4.176, 5.10.96, 5.15.19, 5.16.5, 5.17 | Patch available | CNA |
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.176, 5.6
- Fix · CNA Linux (Linux) Fixed in 5.4.176, 5.10.96, 5.15.19, 5.16.5, 5.17
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2022-48768
- 2026-10-03 Alias added: GHSA-pwf7-jc5h-rr33
References
Patch 5
- https://git.kernel.org/stable/c/8a8878ebb596281f50fc0b9a6e1f23f0d7f154e8
- https://git.kernel.org/stable/c/d71b06aa995007eafd247626d0669b9364c42ad7
- https://git.kernel.org/stable/c/e33fa4a46ee22de88a700e2e3d033da8214a5175
- https://git.kernel.org/stable/c/df86e2fe808c3536a9dba353cc2bebdfea00d0cf
- https://git.kernel.org/stable/c/e629e7b525a179e29d53463d992bdee759c950fb
More Linux Kernel vulnerabilities
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- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- 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-2022-48768 · CVE Program
- CVE-2022-48768 · NVD
- FIRST EPSS
- GHSA-pwf7-jc5h-rr33 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-48768 · 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