CVE-2022-3623

Linux Kernel BPF gup.c follow_page_pte race condition

HIGH

7.5

CVSS Score

Published: October 20, 2022 at 12:00 AM UTC

Updated: June 17, 2026 at 04:59 AM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

SSVC

No known exploit

Description

A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function follow_page_pte of the file mm/gup.c of the component BPF. The manipulation leads to race condition. The attack can be launched remotely. It is recommended to apply a patch to fix this issue. The identifier VDB-211921 was assigned to this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

5.1 ≤ v < 5.4.2285.11 ≤ v < 5.15.785.16 ≤ v < 5.19.175.5 ≤ v < 5.10.1596.0 ≤ v < 6.0.3

Affected range stops below 5.10.159, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.15.78, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.19.17, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.228, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Mailing ListPatchVendor Advisory

Source: [email protected]

https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=fac35ba763ed07ba93154c95ffc0c4a55023707f

Mailing ListThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html

Third Party Advisory

Source: [email protected]

https://vuldb.com/?id.211921

Vendor AdvisoryThird Party Advisory

Source: [email protected]

https://www.debian.org/security/2023/dsa-5324

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: HIGH
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-362

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