PT-2024-11106 · Linux+1 · Linux Kernel+1

Yunjian Wang · Published 2021-04-23 · Updated 2024-12-09 · CVE-2021-47002

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A null pointer dereference issue has been resolved in the Linux kernel. The issue occurs when alloc pages node() returns null in svc rqst alloc(), causing the null rq scratch page pointer to be dereferenced when calling put page() in svc rqst free(). This is fixed by adding a null check. The issue is related to the SUNRPC component.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2024-9967

BDU:2025-06532

CVE-2021-47002

Affected Products

Alt Linux

Linux Kernel

References · 22

• https://git.kernel.org/stable/c/b9f83ffaa0c096b4c832a43964fe6bff3acffe10 · Patch
• https://git.kernel.org/stable/c/3de81c1e84bf84803308da3272a829a7655c5336 · Patch
• https://bdu.fstec.ru/vul/2025-06532 · Security Note
• https://ubuntu.com/security/CVE-2021-47002 · Vendor Advisory
• https://git.kernel.org/stable/c/1e10f58f1c9a6b667b045513c7a4e6111c24fe7c · Patch
• https://git.kernel.org/stable/c/c664aaec9aee544538a78ba4893a44bc73a6d742 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-47002 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-47002 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47002 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47002 · Vendor Advisory
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.221 · Note
• https://twitter.com/CVEnew/status/1762754424492228739 · Twitter Post
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.5 · Note
• https://lore.kernel.org/linux-cve-announce/2024022828-CVE-2021-47002-3946@gregkh/T/#u · Note
• https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.223-lvc29&id=3de81c1e84bf84803308da3272a829a7655c5336 · Note