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NVD / CVE Program· CNA Linux

CVE-2022-50365: skbuff: Account for tail adjustment during pull operations

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: 0.57% (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 2d59f0ca153e9573ec4f140988c0ccca0eb4181b, 2d7afdcbc9d32423f177ee12b7c93783aea338fb, 331615d837f4979eb91a336a223a5c7f7886ecd5.
  • Severity is disputed: the assigning authority (CNA) scores it 7.5, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 2d59f0ca153e9573ec4f140988c0ccca0eb4181b, 2d7afdcbc9d32423f177ee12b7c93783aea338fb, 331615d837f4979eb91a336a223a5c7f7886ecd5 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: skbuff: Account for tail adjustment during pull operations Extending the tail can have some unexpected side effects if a program uses a helper like BPF_FUNC_skb_pull_data to read partial content beyond the head skb headlen when all the skbs in the gso frag_list are linear with no head_frag - kernel BUG at net/core/skbuff.c:4219! pc : skb_segment+0xcf4/0xd2c lr : skb_segment+0x63c/0xd2c Call trace: skb_segment+0xcf4/0xd2c __udp_gso_segment+0xa4/0x544 udp4_ufo_fragment+0x184/0x1c0 inet_gso_segment+0x16c/0x3a4 skb_mac_gso_segment+0xd4/0x1b0 __skb_gso_segment+0xcc/0x12c udp_rcv_segment+0x54/0x16c udp_queue_rcv_skb+0x78/0x144 udp_unicast_rcv_skb+0x8c/0xa4 __udp4_lib_rcv+0x490/0x68c udp_rcv+0x20/0x30 ip_protocol_deliver_rcu+0x1b0/0x33c ip_local_deliver+0xd8/0x1f0 ip_rcv+0x98/0x1a4 deliver_ptype_list_skb+0x98/0x1ec __netif_receive_skb_core+0x978/0xc60 Fix this by marking these skbs as GSO_DODGY so segmentation can handle the tail updates accordingly.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 17, 2025
Updated
Aug 5, 2026
EPSS
0.5% · 47th 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 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
7.5
2.0 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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-2022-50365

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

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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.

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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 kernel4.9.194 and later · before 4.9.337
  • linux linux kernel4.14.145 and later · before 4.14.303
  • linux linux kernel4.19.74 and later · before 4.19.270
  • linux linux kernel5.2.16 and later · before 5.3
  • linux linux kernel5.3.1 and later · before 5.4.229
  • linux linux kernel5.5 and later · before 5.10.163
  • linux linux kernel5.11 and later · before 5.15.86
  • linux linux kernel5.16 and later · before 6.0.16
  • linux linux kernel6.1 and later · before 6.1.2
  • linux linux kernel5.3

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

    • 92984818ff8cfd97311a5e0ac27f148a00df2b54, 5.3affected
    • 162a5a8c3aff15c449e6b38355cdf80ab4f77a5a and later · before ff3743d00f41d803e6ab9334962b674f3b7fd0cbaffected · git
    • 55fb612bef7fd237fb70068e2b6ff1cd1543a8ef and later · before 6ac417d71b80e74b002313fcd73f7e9008e8e457affected · git
    • 821302dd0c51d29269ef73a595bdff294419e2cd and later · before 2d59f0ca153e9573ec4f140988c0ccca0eb4181baffected · git
    • 3dcbdb134f329842a38f0e6797191b885ab00a00 and later · before 668dc454bcbd1da73605201ff43f988c70848215affected · git
    • 3dcbdb134f329842a38f0e6797191b885ab00a00 and later · before 821be5a5ab09a40ba09cb5ba354f18cf7996fea0affected · git
    • 3dcbdb134f329842a38f0e6797191b885ab00a00 and later · before 8fb773eed4909ef5dc1bbeb3629a337d3336df7eaffected · git
    • 3dcbdb134f329842a38f0e6797191b885ab00a00 and later · before 946dd5dc4fcc4123cdfe3942b20012c4448cf89aaffected · git
    • 3dcbdb134f329842a38f0e6797191b885ab00a00 and later · before 331615d837f4979eb91a336a223a5c7f7886ecd5affected · git
    • 3dcbdb134f329842a38f0e6797191b885ab00a00 and later · before 2d7afdcbc9d32423f177ee12b7c93783aea338fbaffected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1

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-2022-50363Sep 17, 2025 · skmsg: pass gfp argument to alloc_sk_msg()
    22Monitor
  • ← EarlierCVE-2022-50364Sep 17, 2025 · i2c: mux: reg: check return value after calling platform_get_resource()
    22Monitor
  • Later →CVE-2022-50366Sep 17, 2025 · powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue
    28Monitor

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 Linux2d59f0ca153e9573ec4f140988c0ccca0eb4181bVendor (CNA)
Linux Linux2d7afdcbc9d32423f177ee12b7c93783aea338fbVendor (CNA)
Linux Linux331615d837f4979eb91a336a223a5c7f7886ecd5Vendor (CNA)
Linux Linux4.14.303Vendor (CNA)
Linux Linux4.19.270Vendor (CNA)
Linux Linux4.9.337Vendor (CNA)
Linux Linux5.3Vendor (CNA)
Linux Linux668dc454bcbd1da73605201ff43f988c70848215Vendor (CNA)
Linux Linux6ac417d71b80e74b002313fcd73f7e9008e8e457Vendor (CNA)
Linux Linux821be5a5ab09a40ba09cb5ba354f18cf7996fea0Vendor (CNA)
Linux Linux8fb773eed4909ef5dc1bbeb3629a337d3336df7eVendor (CNA)
Linux Linux946dd5dc4fcc4123cdfe3942b20012c4448cf89aVendor (CNA)
Linux Linuxff3743d00f41d803e6ab9334962b674f3b7fd0cbVendor (CNA)
debian:linux6.1.4-1 · Debian:12Package 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.

No history yet (it accumulates with the daily EPSS job).

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 (8 more)

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

All records