CVE-2022-3635

Linux Kernel IPsec idt77252.c tst_timer use after free

HIGH

CVSS Score

Published: October 21, 2022 at 12:00 AM UTC

Updated: October 14, 2026 at 02:17 PM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

HIGH7

Exploit prediction

EPSS 0.4%

SSVC

PoC

Description

A vulnerability, which was classified as critical, has been found in Linux Kernel. Affected by this issue is the function tst_timer of the file drivers/atm/idt77252.c of the component IPsec. The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. VDB-211934 is the identifier assigned to this vulnerability.

Affected

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

Debian Linux · Debiandrupal

95%

10.0

Linux Kernel · Linux

95%

2.6.12 ≤ v < 4.9.3264.10 ≤ v < 4.14.2914.15 ≤ v < 4.19.2564.20 ≤ v < 5.4.2115.11 ≤ v < 5.15.635.16 ≤ v < 5.19.45.5 ≤ v < 5.10.138

Affected range stops below 4.14.291, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.19.256, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.9.326, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.10.138, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.15.63, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.19.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.211, 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

https://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next.git/commit/?id=3f4093e2bf4673f218c0bf17d8362337c400e77b

References (4)

ExploitMailing ListPatchVendor Advisory

Source: [email protected]

https://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next.git/commit/?id=3f4093e2bf4673f218c0bf17d8362337c400e77b

Mailing ListThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

Third Party Advisory

Source: [email protected]

https://vuldb.com/?id.211934

Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

https://cert-portal.siemens.com/productcert/html/ssa-794697.html

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

7HIGH[email protected]

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-119CWE-362

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