NULL pointer dereference in Linux Kernel
CVE-2023-23005
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (17.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Linux Kernel
- SUSE Linux Enterprise Server — versions 15
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/torvalds/linux/commit/4a625ceee8a0ab0273534cb6b432ce6b331db5ee (Patch)
- cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2 (Patch, Mailing List, Release Notes)
- bugzilla.suse.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2023-23005?
- CVE-2023-23005 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-03-01.
- How severe is CVE-2023-23005?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2023-23005 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.