CVE-2020-29368 — Race Condition in Kernel

CWE-362 — Race ConditionCWE-787 — Out-of-bounds Write11 documents9 sources
Severity
7.0HIGHNVD
OSV5.4
EPSS
0.1%
top 72.00%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Linux KernelDebian LinuxPaloalto Pan-os+2 more
Timeline
PublishedNov 28
Latest updateFeb 14

Description

An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.0 | Impact: 5.9

Affected Packages6 packages

▶NVDlinux/linux_kernel4.5.5 — 4.9.228+4
▶Debianlinux/linux_kernel< 5.7.6-1+3
▶debiandebian/linux< linux 5.7.6-1 (bookworm)

Patches

Patch: bugs.chromium.org ↗Patch: git.kernel.org ↗Patch: bugs.chromium.org ↗

🔴Vulnerability Details

4
GHSA
GHSA-wr2j-q648-w99g: An issue was discovered in __split_huge_pmd in mm/huge_memory↗2022-05-24
▶
OSV
CVE-2020-29368: In __split_huge_pmd of huge_memory↗2022-03-01
▶
OSV
linux-oem-5.6 vulnerabilities↗2021-02-25
▶
OSV
CVE-2020-29368: An issue was discovered in __split_huge_pmd in mm/huge_memory↗2020-11-28
▶

📋Vendor Advisories

6
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS↗2024-02-14
▶
Android
CVE-2020-29368: Kernel Memory Management↗2022-03-01
▶
Ubuntu
Linux kernel (OEM) vulnerabilities↗2021-02-25
▶
Microsoft
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a TH↗2020-11-10
▶
Red Hat
kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check↗2020-06-03
▶