CVE-2022-42703PoC(linux / linux_kernel)

LOWCVSS 5.5 · MEDIUM

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

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1.5/ 10 priority

Sources & remediation

Patch / fix

Exploit / PoC references

Weakness type (CWE)

CWE-416

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

linux_kernel

Threat summary

Public PoC is present in monitored signal
2 mentions across 2 observed days
Momentum state: stable

What's happening

PoC mentioned or linked in 2 signals
Technical details provided in 2 signals
Peaked 1d ago at 1 mentions (2026-03-31); latest day: 1
2 total mentions across 2 days

Affected systems

Vendors

linux

Products

linux_kernel

Deep dive

Activity timeline2 mentions / 2d

Signal classification1 categories

PoC

2100.0%

Referenced assets1 URL

By indicator

https://projectzero.google/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html

Full discourse2 posts

r1ru@ri5255191d
PoC
I finally succeeded in reproducing CVE-2022-42703. This vulnerability was great for practicing cross-cache attack and ret2hbp. I will write a blog post about it later! https://projectzero.google/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html https://t.co/S0TlQ6wOXX
Post summary
The tweet confirms successful reproduction of CVE-2022-42703, references a Project Zero blog with a PoC, and highlights cross‑cache and ret2hbp techniques.
523024110811.1K
1.9K followersView on X
ASMAA 🇯🇴 ✷@ASMAA_abi190d
PoC
@ri5255 Clean execution! Getting that uid=0 on CVE-2022-42703 is a huge win. The UAF (Use-After-Free) logic in the memory management subsystem is always tricky to weaponize. Can’t wait to read the full write-up!
Post summary
The tweet indicates the author has successfully executed a proof‑of‑concept for CVE‑2022‑42703, demonstrating a UAF‑based privilege escalation to root, but provides no code, patch info, or evidence of wild exploitation.
00010226
1.4K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	linux	linux_kernel	-	-	-

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