CVE-2022-48851

Kernel memory corruption via freed receive buffer

Published Jul 16, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel gdm724x driver allows local users to corrupt kernel memory or crash through the receive path. gdm_lte_rx() calls netif_rx_ni(), which frees the socket buffer, and then dereferences the released skb->len field to update receive statistics. Exploitation requires low-privileged local access and the affected gdm724x driver; reported consequences are memory corruption and a system crash.

CVSS severity7.8
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel gdm724x driver allows local users to corrupt kernel memory or crash through the receive path. gdm_lte_rx() calls netif_rx_ni(), which frees the socket buffer, and then dereferences the released skb->len field to update receive statistics. Exploitation requires low-privileged local access and the affected gdm724x driver; reported consequences are memory corruption and a system crash.

The record

CVE
CVE-2022-48851
Published
Jul 16, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.12
  2. Affected versionversion=61e121047645122c47714fcda684d0ee67f444af <1fb9dd3787495b4deb0efe66c58306b65691a48f
  3. Affected versionversion=61e121047645122c47714fcda684d0ee67f444af <403e3afe241b62401de1f8629c9c6b9b3d69dbff
  4. Affected versionversion=61e121047645122c47714fcda684d0ee67f444af <48ecdf3e29a6e514e8196691589c7dfc6c4ac169
  5. Affected versionversion=61e121047645122c47714fcda684d0ee67f444af <6d9700b445098dbbce0caff4b8cfca214cf1e757
  6. Affected versionversion=61e121047645122c47714fcda684d0ee67f444af <6dc7b87c62423bfa68139fe95e85028aab584c9a
  7. Affected versionversion=61e121047645122c47714fcda684d0ee67f444af <83a9c886c2b5a0d28c0b37e1736b47f38d61332a
  8. Affected versionversion=61e121047645122c47714fcda684d0ee67f444af <d39dc79513e99147b4c158a8a9e46743e23944f5
  9. Affected versionversion=61e121047645122c47714fcda684d0ee67f444af <fc7f750dc9d102c1ed7bbe4591f991e770c99033

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.12; version=61e121047645122c47714fcda684d0ee67f444af <1fb9dd3787495b4deb0efe66c58306b65691a48f; version=61e121047645122c47714fcda684d0ee67f444af <403e3afe241b62401de1f8629c9c6b9b3d69dbff; version=61e121047645122c47714fcda684d0ee67f444af <48ecdf3e29a6e514e8196691589c7dfc6c4ac169; version=61e121047645122c47714fcda684d0ee67f444af <6d9700b445098dbbce0caff4b8cfca214cf1e757; version=61e121047645122c47714fcda684d0ee67f444af <6dc7b87c62423bfa68139fe95e85028aab584c9a; version=61e121047645122c47714fcda684d0ee67f444af <83a9c886c2b5a0d28c0b37e1736b47f38d61332a; version=61e121047645122c47714fcda684d0ee67f444af <d39dc79513e99147b4c158a8a9e46743e23944f5; version=61e121047645122c47714fcda684d0ee67f444af <fc7f750dc9d102c1ed7bbe4591f991e770c99033

Published CVSS scores

7.8CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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