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NVD / CVE Program· CNA Linux

CVE-2026-53235: net: add pskb_may_pull() to skb_gro_receive_list()

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 0.44% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 0cde3a004119db637b401c54e77536e4145fc0b4, 848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac, 9e636c995b7beeb74ea882968248752821c244c4.

Low priority for now. Upgrade to Linux Linux 0cde3a004119db637b401c54e77536e4145fc0b4, 848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac, 9e636c995b7beeb74ea882968248752821c244c4 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: net: add pskb_may_pull() to skb_gro_receive_list() skb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without first ensuring the data is in the linear area via pskb_may_pull(). When the skb arrives via napi_gro_frags(), skb_headlen can be 0 (all data in page fragments) while skb_gro_offset is non-zero (after IP+TCP header parsing). The skb_pull() then decrements skb->len by skb_gro_offset but skb->data_len stays unchanged, hitting BUG_ON(skb->len < skb->data_len) in __skb_pull(). The UDP fraglist GRO path already contains this guard at udp_offload.c:749. Adding it to skb_gro_receive_list() itself provides centralized protection for all callers (TCP, UDP, and any future protocols), and ensures the precondition of skb_pull() is satisfied before it is called. On pskb_may_pull() failure, set NAPI_GRO_CB(skb)->flush = 1 so the skb is not held as a new GRO head and is instead delivered through the normal receive path, matching the UDP handling.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Jun 25, 2026
Updated
Aug 5, 2026
EPSS
0.4% · 38th percentile
CWE
—

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CNA vs NVD score

NVD
—
CNA · Linux
7.5
NVD has not scored this yet; the score shown is the CNA’s.

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

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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 kernel6.10 and later · before 6.12.94
  • linux linux kernel6.13 and later · before 6.18.36
  • linux linux kernel6.19 and later · before 7.0.13
  • linux linux kernel7.1

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

    • 6.10affected
    • 8d95dc474f85481652a0e422d2f1f079de81f63c and later · before 9e636c995b7beeb74ea882968248752821c244c4affected · git
    • 8d95dc474f85481652a0e422d2f1f079de81f63c and later · before 0cde3a004119db637b401c54e77536e4145fc0b4affected · git
    • 8d95dc474f85481652a0e422d2f1f079de81f63c and later · before 848571dcbbbea7ba44dd4f7ebe1fbb274afe08acaffected · git
    • 8d95dc474f85481652a0e422d2f1f079de81f63c and later · before f2bb3434544454099a5b6dec213567267b05d79daffected · git
    • before 6.10not affected · semver
    • 6.12.94 and later · up to and including 6.12.*not affected · semver
    • 6.18.36 and later · up to and including 6.18.*not affected · semver
    • 7.0.13 and later · up to and including 7.0.*not affected · semver
    • 7.1 and laternot affected · original_commit_for_fix

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:13linuxbefore 6.12.94-16.12.94-1
Debian:14linuxbefore 7.0.13-17.0.13-1
Red Hat:enterprise_linux:10.2kernelbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64kbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-corebefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-debugbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-debug-corebefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-debug-debuginfobefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-debug-develbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-debug-devel-matchedbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-debug-modulesbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-debug-modules-corebefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-debug-modules-extrabefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-debuginfobefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-develbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-devel-matchedbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-modulesbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-modules-corebefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-64k-modules-extrabefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-abi-stablelistsbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-corebefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-debugbefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-debug-corebefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2
Red Hat:enterprise_linux:10.2kernel-debug-debuginfobefore 0:6.12.0-211.52.1.el10_20:6.12.0-211.52.1.el10_2

+69

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-2026-53233Jun 25, 2026 · netdev: fix double-free in netdev_nl_bind_rx_doit()
    31Monitor
  • ← EarlierCVE-2026-53234Jun 25, 2026 · net: ibm: emac: Fix use-after-free during device removal
    31Monitor
  • Later →CVE-2026-53240Jun 25, 2026 · xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload
    35Monitor

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 Linux0cde3a004119db637b401c54e77536e4145fc0b4Vendor (CNA)
Linux Linux848571dcbbbea7ba44dd4f7ebe1fbb274afe08acVendor (CNA)
Linux Linux9e636c995b7beeb74ea882968248752821c244c4Vendor (CNA)
Linux Linuxf2bb3434544454099a5b6dec213567267b05d79dVendor (CNA)
debian:linux6.12.94-1 · Debian:13Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-debug-devel0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-debug-devel-matched0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-debuginfo0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-devel0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-devel-matched0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debug-debuginfo0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debug-devel0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debug-devel-matched0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debuginfo0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debuginfo-common-aarch640:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debuginfo-common-ppc64le0:6.12.0-211.52.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
rocky linux:kernel0:6.12.0-211.52.1.el10_2 · Rocky Linux:10Package 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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • 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
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

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 (3 more)

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

All records