CVE-2021-3492 (GCVE-0-2021-3492)
Vulnerability from cvelistv5
Published
2021-04-17 04:20
Modified
2024-09-17 03:54
Severity ?
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-415 - Double Free
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service (kernel memory exhaustion) or gain privileges via executing arbitrary code. AKA ZDI-CAN-13562.
References
security@ubuntu.com http://packetstormsecurity.com/files/162614/Kernel-Live-Patch-Security-Notice-LSN-0077-1.html Third Party Advisory, VDB Entry
security@ubuntu.com https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=25c891a949bf918b59cbc6e4932015ba4c35c333 Mailing List, Patch, Vendor Advisory
security@ubuntu.com https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=8fee52ab9da87d82bc6de9ebb3480fff9b4d53e6 Mailing List, Patch, Vendor Advisory
security@ubuntu.com https://ubuntu.com/security/notices/USN-4917-1 Vendor Advisory
security@ubuntu.com https://www.openwall.com/lists/oss-security/2021/04/16/2 Mailing List, Third Party Advisory
security@ubuntu.com https://www.zerodayinitiative.com/advisories/ZDI-21-422/ Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 http://packetstormsecurity.com/files/162614/Kernel-Live-Patch-Security-Notice-LSN-0077-1.html Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=25c891a949bf918b59cbc6e4932015ba4c35c333 Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=8fee52ab9da87d82bc6de9ebb3480fff9b4d53e6 Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://ubuntu.com/security/notices/USN-4917-1 Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.openwall.com/lists/oss-security/2021/04/16/2 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.zerodayinitiative.com/advisories/ZDI-21-422/ Third Party Advisory, VDB Entry
Impacted products
Vendor Product Version
Ubuntu Linux kernel Version: 5.8 kernel   < 5.8.0-50.56
Version: 5.4 kernel   < 5.4.0-72.80
 Create a notification for this product.
Show details on NVD website

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