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CVE-2020-29370

23
FAUCET Score

CVE-2020-29370 is a high-severity vulnerability affecting the Linux kernel before version 5.5.11, specifically within the kmem_cache_alloc_bulk function in mm/slub.c, and also impacting NetApp products. This flaw, a concurrency issue (CWE-362), could allow a local, low-privileged attacker to achieve high impact on confidentiality, integrity, and availability, though with high attack complexity. There is currently no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.5.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:solidfire\,_enterprise_sds_\&_hci_storage_node:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.61%
Probability of exploitation in next 30 days
EPSS Percentile
45.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0061 is in the 84th percentile among its peer group of 1,525 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia msrc
Product: 19137-16820Fixed in: 5.4.91-1
microsoftpatch availablevia msrc
Product: cm1 kernel 5.4.91-1 on CBL Mariner 1.0Fixed in: 5.4.91-1

Vendor Advisories (2)

microsoft2020-Nov/CVE-2020-29370Important

An issue was discovered in kmem_cache_alloc_bulk in mm/slub.c in the Linux kernel before 5.5.11. The slowpath lacks the required TID increment aka CID-fd4d9c7d0c71.

Nov 10, 2020
redhatCVE-2020-29370

kernel: Race condition in SLUB bulk alloc slowpath

Jun 15, 2020

References

bugs.chromium.org / p/project-zero/issues/detail
ExploitIssue TrackingPatchThird Party Advisory
cdn.kernel.org / pub/linux/kernel/v5.x/ChangeLog-5.5.11
Release NotesVendor Advisory
git.kernel.org / pub/scm/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
security.netapp.com / advisory/ntap-20201218-0001
Third Party Advisory