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CVE-2022-49561

MEDIUM

5.5

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: re-fetch conntrack after insertion In case the conntrack is clashing, insertion can free skb->_nfct and set skb->_nfct to the already-confirmed entry. This wasn't found before because the conntrack entry and the extension space used to free'd after an rcu grace period, plus the race needs events enabled to trigger.

CVE Details

CVSS v3.1 Score5.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published2/26/2025

Last Modified10/24/2025

Sourcenvd

Honeypot Sightings0

Affected Products

linux:linux_kernel

References

https://git.kernel.org/stable/c/01989d7eebb61c99bd4b88ebc8e261bd2f02caed(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/04e4a11dc723c52db7a36dc58f0d69ce6426f8f0(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/04f9e9104c969d8ce10a4a43634f641ed082092d(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/56b14ecec97f39118bf85c9ac2438c5a949509ed(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/91a36ec160ec1a0c8f5352b772dffcbb0b6023e3(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/92a999d1963eed0df666284e20055136ceabd12f(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/b16bb373988da3ceb0308381634117e18b6ec60d(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/e97222b785e70e8973281666d709baad6523d8af(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

IOC Correlations

No correlations recorded

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