CVE-2025-40036

unknown

Published — · Modified —

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

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.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Debian Security Tracker · View original ↗ · DFSG

CVE-2025-40036 NameCVE-2025-40036 DescriptionIn 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…

CVE-2025-40036

Name	CVE-2025-40036
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4379-1, DSA-6053-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	vulnerable
	bullseye (security)	5.10.257-1	vulnerable
	bookworm	6.1.170-3	fixed
	bookworm (security)	6.1.174-1	fixed
	trixie	6.12.86-1	fixed
	trixie (security)	6.12.90-2	fixed
	forky	7.0.9-1	fixed
	sid	7.0.10-1	fixed
linux-6.1 (PTS)	bullseye (security)	6.1.174-1~deb11u1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
linux	source	bookworm	6.1.158-1	DSA-6053-1
linux	source	trixie	6.12.57-1
linux	source	(unstable)	6.17.6-1
linux-6.1	source	bullseye	6.1.158-1~deb11u1	DLA-4379-1

Notes

https://git.kernel.org/linus/da1ba64176e0138f2bfa96f9e43e8c3640d01e1e (6.18-rc1)

Home - Debian Security - Source (Git)

Apply commands

text fix

Notes

https://git.kernel.org/linus/da1ba64176e0138f2bfa96f9e43e8c3640d01e1e (6.18-rc1)

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`6.1.158-1`
debian	forky	fixed	`6.17.6-1`
debian	sid	fixed	`6.17.6-1`
debian	trixie	fixed	`6.12.57-1`
debian	bullseye	fixed	`6.1.158-1~deb11u1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.