CVE-2023-23005

CWE-476 — NULL Pointer DereferenceCWE-252 — Unchecked Return Value7 documents7 sources
Severity
5.5MEDIUM
EPSS
0.1%
top 71.88%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Linux Linux KernelSuse Linux Enterprise Server
Timeline
PublishedMar 1
Latest updateMar 14

Description

In the Linux kernel before 6.2, mm/memory-tiers.c misinterprets the alloc_memory_type return value (expects it to be NULL in the error case, whereas it is actually an error pointer). NOTE: this is disputed by third parties because there are no realistic cases in which a user can cause the alloc_memory_type error case to be reached.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages3 packages

▶Debianlinux< 6.3.7-1+1

Patches

Patch: bugzilla.suse.com ↗Patch: cdn.kernel.org ↗Patch: github.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-ghmc-655x-wwhc: In the Linux kernel before 6↗2023-03-01
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CVEList
CVE-2023-23005: In the Linux kernel before 6↗2023-03-01
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OSV
CVE-2023-23005: In the Linux kernel before 6↗2023-03-01
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📋Vendor Advisories

3
Microsoft
In the Linux kernel before 6.2 mm/memory-tiers.c misinterprets the alloc_memory_type return value (expects it to be NULL in the error case whereas it is actually an error pointer). NOTE: this is dispu↗2023-03-14
▶
Debian
CVE-2023-23005: linux - In the Linux kernel before 6.2, mm/memory-tiers.c misinterprets the alloc_memory...↗2023
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Red Hat
kernel: incorrect check for error case in the memory_tier_init↗2022-12-01
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