Ubuntu.comUB:CVE-2022-2590CVE-2022-2590
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.5 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:H/Au:S/C:P/I:P/A:P
0.0004 Low
EPSS
Percentile
5.3%
A race condition was found in the way the Linux kernel’s memory subsystem
handled the copy-on-write (COW) breakage of private read-only shared memory
mappings. This flaw allows an unprivileged, local user to gain write access
to read-only memory mappings, increasing their privileges on the system.
Notes
| Author | Note |
|---|---|
| sbeattie | introduced in 9ae0f87d009c (“mm/shmem: unconditionally set pte dirty in mfill_atomic_install_pte”) (v5.16) from reporter: "Kernels before extended uffd-wp support and before PageAnonExclusive (< 5.19) can simply revert 9ae0f87d009c instead and be safe regarding UFFDIO_CONTINUE. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 22.04 | noarch | linux-oem-5.17 | < 5.17.0-1031.32 | UNKNOWN |
References
Related
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.5 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:H/Au:S/C:P/I:P/A:P
0.0004 Low
EPSS
Percentile
5.3%