Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2022-50285: mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 112a005d1ded04a4b41b6d01833cc0bda90625cc, 11993652d0b49e27272db0a37aa828d8a3a4b92b, 12df140f0bdfae5dcfc81800970dd7f6f632e00c.

Low priority for now. Upgrade to Linux Linux 112a005d1ded04a4b41b6d01833cc0bda90625cc, 11993652d0b49e27272db0a37aa828d8a3a4b92b, 12df140f0bdfae5dcfc81800970dd7f6f632e00c or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages The h->*_huge_pages counters are protected by the hugetlb_lock, but alloc_huge_page has a corner case where it can decrement the counter outside of the lock. This could lead to a corrupted value of h->resv_huge_pages, which we have observed on our systems. Take the hugetlb_lock before decrementing h->resv_huge_pages to avoid a potential race.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 15, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 5th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-50285

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.3.6 and later · before 4.4
  • linux linux kernel4.4.1 and later · before 4.9.332
  • linux linux kernel4.10 and later · before 4.14.298
  • linux linux kernel4.15 and later · before 4.19.264
  • linux linux kernel4.20 and later · before 5.4.223
  • linux linux kernel5.5 and later · before 5.10.153
  • linux linux kernel5.11 and later · before 5.15.76
  • linux linux kernel5.16 and later · before 6.0.6
  • linux linux kernel4.4
  • linux linux kernel6.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3f5fae4d1a3189d95b02b4b45e1218df147122bc, 4.4affected
    • a88c769548047b21f76fd71e04b6a3300ff17160 and later · before 3e50a07b6a5fcd39df1534d3fdaca4292a65efe6affected · git
    • a88c769548047b21f76fd71e04b6a3300ff17160 and later · before 629c986e19fe9481227c7cdfd9a105bbc104d245affected · git
    • a88c769548047b21f76fd71e04b6a3300ff17160 and later · before 2b35432d324898ec41beb27031d2a1a864a4d40eaffected · git
    • a88c769548047b21f76fd71e04b6a3300ff17160 and later · before 11993652d0b49e27272db0a37aa828d8a3a4b92baffected · git
    • a88c769548047b21f76fd71e04b6a3300ff17160 and later · before 568e3812b1778b4c0c229649b59977d88f400eceaffected · git
    • a88c769548047b21f76fd71e04b6a3300ff17160 and later · before 112a005d1ded04a4b41b6d01833cc0bda90625ccaffected · git
    • a88c769548047b21f76fd71e04b6a3300ff17160 and later · before c828fab903725279aa9dc6ae3d44bb7e4778f92caffected · git
    • a88c769548047b21f76fd71e04b6a3300ff17160 and later · before 12df140f0bdfae5dcfc81800970dd7f6f632e00caffected · git
    • 4.3.6 and later · before 4.4affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.6-16.0.6-1
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.275.14.12.14-122.275.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_73before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.275.14.12.14-122.275.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.275.14.12.14-122.275.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-50283Sep 15, 2025 · mtd: core: add missing of_node_get() in dynamic partitions code
    31Monitor
  • ← EarlierCVE-2022-50284Sep 15, 2025 · ipc: fix memory leak in init_mqueue_fs()
    22Monitor
  • Later →CVE-2022-50286Sep 15, 2025 · ext4: fix delayed allocation bug in ext4_clu_mapped for bigalloc + inline
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux112a005d1ded04a4b41b6d01833cc0bda90625ccVendor (CNA)
Linux Linux11993652d0b49e27272db0a37aa828d8a3a4b92bVendor (CNA)
Linux Linux12df140f0bdfae5dcfc81800970dd7f6f632e00cVendor (CNA)
Linux Linux2b35432d324898ec41beb27031d2a1a864a4d40eVendor (CNA)
Linux Linux3e50a07b6a5fcd39df1534d3fdaca4292a65efe6Vendor (CNA)
Linux Linux4.4Vendor (CNA)
Linux Linux568e3812b1778b4c0c229649b59977d88f400eceVendor (CNA)
Linux Linux629c986e19fe9481227c7cdfd9a105bbc104d245Vendor (CNA)
Linux Linuxc828fab903725279aa9dc6ae3d44bb7e4778f92cVendor (CNA)
debian:linux6.0.6-1 · Debian:12Package registry (OSV)
suse:kernel-default4.12.14-122.275.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)
suse:kernel-source4.12.14-122.275.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kernel-syms4.12.14-122.275.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_731-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records