5.5

CVE-2023-52646

aio: fix mremap after fork null-deref

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

aio: fix mremap after fork null-deref

Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced
a null-deref if mremap is called on an old aio mapping after fork as
mm->ioctx_table will be set to NULL.

[jmoyer@redhat.com: fix 80 column issue]
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.19 < 4.14.306
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.273
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.232
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.169
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.95
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.13
Linux ≫ Linux Kernel Version6.2 Updaterc1
Linux ≫ Linux Kernel Version6.2 Updaterc2
Linux ≫ Linux Kernel Version6.2 Updaterc3
Linux ≫ Linux Kernel Version6.2 Updaterc4
Linux ≫ Linux Kernel Version6.2 Updaterc5
Linux ≫ Linux Kernel Version6.2 Updaterc6
Linux ≫ Linux Kernel Version6.2 Updaterc7
Linux ≫ Linux Kernel Version6.2 Updaterc8
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.24% 0.143
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
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/178993157e8c50aef7f35d7d6d3b44bb428199e1
Patch
https://git.kernel.org/stable/c/4326d0080f7e84fba775da41d158f46cf9d3f1c2
Patch
https://git.kernel.org/stable/c/808f1e4b5723ae4eda724d2ad6f6638905eefd95
Patch
https://git.kernel.org/stable/c/81e9d6f8647650a7bead74c5f926e29970e834d1
Patch
https://git.kernel.org/stable/c/af126acf01a12bdb04986fd26fc2eb3b40249e0d
Patch
https://git.kernel.org/stable/c/c261f798f7baa8080cf0214081d43d5f86bb073f
Patch
https://git.kernel.org/stable/c/d8dca1bfe9adcae38b35add64977818c0c13dd22
Patch