VulnerabilityModified
CVE-2022-4543
This issue could allow a local attacker to leak KASLR base via prefetch side-channels based on TLB timing for Intel systems.
MEDIUM 5.5EPSS 0.95%
Does this matter?
Lower severity and a low EPSS score (0.95%). Track it; it rarely justifies an emergency change on its own.
Description
A flaw named "EntryBleed" was found in the Linux Kernel Page Table Isolation (KPTI). This issue could allow a local attacker to leak KASLR base via prefetch side-channels based on TLB timing for Intel systems.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.95% probability · 59th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-203
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
References
- https://www.openwall.com/lists/oss-security/2022/12/16/3Exploit, Mailing List, Third Party Advisory
- https://www.willsroot.io/2022/12/entrybleed.htmlExploit, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/12/16/3Exploit, Mailing List, Third Party Advisory
- https://www.willsroot.io/2022/12/entrybleed.htmlExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.