An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: talos
Published: 2021-08-18T14:37:46
Updated: 2024-08-03T18:23:29.351Z
Reserved: 2021-01-04T00:00:00
Link: CVE-2021-21781
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-08-18T15:15:07.733
Modified: 2024-11-21T05:48:57.427
Link: CVE-2021-21781
Redhat