5.5

CVE-2022-49345

net: xfrm: unexport __init-annotated xfrm4_protocol_init()

In the Linux kernel, the following vulnerability has been resolved:

net: xfrm: unexport __init-annotated xfrm4_protocol_init()

EXPORT_SYMBOL and __init is a bad combination because the .init.text
section is freed up after the initialization. Hence, modules cannot
use symbols annotated __init. The access to a freed symbol may end up
with kernel panic.

modpost used to detect it, but it has been broken for a decade.

Recently, I fixed modpost so it started to warn it again, then this
showed up in linux-next builds.

There are two ways to fix it:

  - Remove __init
  - Remove EXPORT_SYMBOL

I chose the latter for this case because the only in-tree call-site,
net/ipv4/xfrm4_policy.c is never compiled as modular.
(CONFIG_XFRM is boolean)
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.15 < 4.9.318
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.283
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.247
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.198
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.122
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.47
Linux ≫ Linux Kernel Version >= 5.16 < 5.17.15
Linux ≫ Linux Kernel Version >= 5.18 < 5.18.4
Linux ≫ Linux Kernel Version5.19 Updaterc1
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.28% 0.201
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/2b253fbc9f7b5db18d716436bdcf8ecef09fd63d
Patch
https://git.kernel.org/stable/c/31f3c6a4dcd3260a386e62cef2d5b36e902600a1
Patch
https://git.kernel.org/stable/c/4a388f08d8784af48f352193d2b72aaf167a57a1
Patch
https://git.kernel.org/stable/c/85a055c03691e51499123194a14a0c249cf33227
Patch
https://git.kernel.org/stable/c/be3884d5cd04ccd58294b83a02d70b7c5fca19d3
Patch
https://git.kernel.org/stable/c/c58d82a1264813e69119c13e9804e2e60b664ad5
Patch
https://git.kernel.org/stable/c/e04d59cfe0c0129df7aba7ef7bb17b96be2a64f2
Patch
https://git.kernel.org/stable/c/e53cd3814504b2cadaba4d5a8a07eeea9ddacd03
Patch
https://git.kernel.org/stable/c/ef6d2354de238b065d8799c80da4be9a6af18e39
Patch