High severity · published Nov 3, 2023
CVE-2023-1476
A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code
7.0
CVSS
0.2%
EPSS
No
On KEV
Description
A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
before 5.14 · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
EL
Enterprise Linux Eus · Redhat
8.8 · source: NVD
EL
Enterprise Linux For Power Little Endian · Redhat
8.0_ppc64le · source: NVD
EL
Enterprise Linux For Power Little Endian Eus · Redhat
8.8_ppc64le · source: NVD
EL
Enterprise Linux Server Tus · Redhat
8.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-1476
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-1476
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:1659
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-1476
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2176035
Mailing List
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2
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