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CVE-2020-27815

HIGH
7.8
CVSS Score
Published: May 26, 2021 at 12:18 PM UTC
Updated: June 17, 2026 at 03:09 AM UTC
23 products affected across 4 vendorsLinux KernelDebian LinuxH700S Firmware

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Severity
HIGH7.8
Exploit prediction
EPSS 0.8%

Description

A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the ability to set extended attributes to panic the system, causing memory corruption or escalating privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Affected

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

Debian Linux· Debiandrupal
95%
10.09.0
Linux Kernel· Linux
95%
v > 4.4.2494.10 ≤ v < 4.14.2134.15 ≤ v < 4.19.1644.20 ≤ v < 5.4.864.5 ≤ v < 4.9.2495.5 ≤ v < 5.10.4
Affected range stops below 4.14.213, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.164, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.249, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.86, so it looks safe — our inference, not a vendor statement
Aff A250 Firmware· NetApp
95%
All versions
netapp-aff-a250 (same device)
Fas 500F Firmware· NetApp
95%
All versions
netapp-fas500f (same device)
H300E Firmware· NetAppdrupal
95%
All versions
netapp-h300e (same device)
H300S Firmware· NetAppdrupal
95%
All versions
netapp-h300s (same device)
H410C Firmware· NetAppdrupal
95%
All versions
netapp-h410c (same device)
H410S Firmware· NetAppdrupal
95%
All versions
netapp-h410s (same device)
H500E Firmware· NetAppdrupal
95%
All versions
netapp-h500e (same device)
H500S Firmware· NetAppdrupal
95%
All versions
netapp-h500s (same device)

References (10)

Mailing Listx_refsource_MLISTExploitThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/11/30/5
Mailing Listx_refsource_MLISTExploitPatchThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/12/28/1
x_refsource_MISCIssue Tracking
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1897668%2C
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c61b3e4839007668360ed8b87d7da96d2e59fc6c
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210702-0004/
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2021/dsa-4843

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119CWE-787

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