misc: fastrpc: fix possible map leak in fastrpc_put_args
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: fix possible map leak in fastrpc_put_args copy_to_user() failure would cause an early return without cleaning up the fdlist, which has been updated by the DSP. This could lead to map leak. Fix this by redirecting to a cleanup path on failure, ensuring that all mapped buffers are properly released before returning.
Why it matters now
EPSS 0.00214 11th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.1.156, 6.6.112, 6.12.53 +2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.156, 6.6.112, 6.12.53, 6.17.3, 6.18
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-2025-40036
- 2026-10-03 Alias added: GHSA-w4pg-p4j3-82c8
References
Other 5
- https://git.kernel.org/stable/c/a085658264d0c8d4f795d4631f77d7289a021de9
- https://git.kernel.org/stable/c/3ad42dc66445df6977cf4be0c06f1a655299ce6c
- https://git.kernel.org/stable/c/78d33a041555db03903e8037fd053ed74fbd88cb
- https://git.kernel.org/stable/c/c000f65f0ac93d9f9cc69a230d372f6ca93e4879
- https://git.kernel.org/stable/c/da1ba64176e0138f2bfa96f9e43e8c3640d01e1e
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- 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
Sources
- CVE-2025-40036 · CVE Program
- CVE-2025-40036 · NVD
- FIRST EPSS
- GHSA-w4pg-p4j3-82c8 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-40036 · Red Hat security data · CC BY 4.0
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