ksmbd: fix memory leak in parse_lease_state()
Priority LOW 24CWE-401Published · 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
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-401.
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix memory leak in parse_lease_state() The previous patch that added bounds check for create lease context introduced a memory leak. When the bounds check fails, the function returns NULL without freeing the previously allocated lease_ctx_info structure. This patch fixes the issue by adding kfree(lreq) before returning NULL in both boundary check cases.
Why it matters now
EPSS 0.0019 8th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.14, 6.1.139, 6.6.91 +2
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 |
|---|---|---|---|---|---|
| Linux | Linux | 6.13.11 to before 6.14 | 6.14 | Patch available | CNA |
| Linux | Linux | 6.1.134 to before 6.1.139; 6.6.87 to before 6.6.91; 6.12.23 to before 6.12.29; 6.14.2 to before 6.14.7 | 6.1.139, 6.6.91, 6.12.29, 6.14.7 | Patch available | CNA |
- Linux VendorLinux Affected 6.13.11 to before 6.14 Fixed in 6.14 Patch available CNA
- Linux VendorLinux Affected 6.1.134 to before 6.1.139; 6.6.87 to before 6.6.91; 6.12.23 to before 6.12.29; 6.14.2 to before 6.14.7 Fixed in 6.1.139, 6.6.91, 6.12.29, 6.14.7 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.1.134 to before 6.1.139; 6.6.87 to before 6.6.91; 6.12.23 to before 6.12.29; 6.13.11 to before 6.14; 6.14.2 to before 6.14.7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* | 6.15 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* | 6.15 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* | 6.15 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* | 6.15 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:* | 6.15 rc5 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.1.134 to before 6.1.139; 6.6.87 to before 6.6.91; 6.12.23 to before 6.12.29; 6.13.11 to before 6.14; 6.14.2 to before 6.14.7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* Versions 6.15 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* Versions 6.15 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* Versions 6.15 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* Versions 6.15 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:* Versions 6.15 rc5 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.14
- Fix · CNA Linux (Linux) Fixed in 6.1.139, 6.6.91, 6.12.29, 6.14.7
Vendor assessments
Red Hat
Not affected: 5 products
- Red Hat Enterprise Linux 10
- 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-2025-37962
- 2026-10-03 Alias added: GHSA-pgjf-j2hp-qqxv
References
Patch 5
- https://git.kernel.org/stable/c/facf22c1a394c1e023dab5daf9a494f722771e1c
- https://git.kernel.org/stable/c/af9e2d4732a548db8f6f5a90c2c20a789a3d7240
- https://git.kernel.org/stable/c/2148d34371b06dac696c0497a98a6bf905a51650
- https://git.kernel.org/stable/c/829e19ef741d9e9932abdc3bee5466195e0852cf
- https://git.kernel.org/stable/c/eb4447bcce915b43b691123118893fca4f372a8f
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-2025-37962 · CVE Program
- CVE-2025-37962 · NVD
- FIRST EPSS
- GHSA-pgjf-j2hp-qqxv · GitHub Advisory Database · CC BY 4.0
- CVE-2025-37962 · Red Hat security data · CC BY 4.0
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