PT-2024-11334 · Linux+1 · Linux Kernel+1

Syzbot · Published 2021-05-07 · Updated 2024-05-31 · CVE-2021-47335

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 The issue is an use-after-free problem during f2fs recovery. This occurs when multiple f2fs filesystem instances race to access the global fsync entry slab pointer, resulting in a use-after-free issue of the slab cache. The root cause is that multiple filesystem instances can access this pointer simultaneously.

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

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-14607

CVE-2021-47335

OESA-2024-1677

OESA-2024-1678

Affected Products

Astra Linux

Linux Kernel

References · 104

• https://nvd.nist.gov/vuln/detail/CVE-2024-27037 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-27078 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-35936 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-35997 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-47284 · Security Note
• https://osv.dev/vulnerability/OESA-2024-1677 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-26993 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-27077 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-52656 · Security Note
• https://git.kernel.org/stable/c/e472b276a0d2180808009be38105e12754432e2a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-35898 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-27426 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-26969 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-52818 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-27388 · Security Note