{"id":"CVE-2020-10781","state":"PUBLISHED","title":"A flaw was found in the Linux Kernel before 5.8-rc6 in the ZRAM kernel module, where a user with a local account and the ability to read the /sys/class/zram-control/hot_add file ca","description":"A flaw was found in the Linux Kernel before 5.8-rc6 in the ZRAM kernel module, where a user with a local account and the ability to read the /sys/class/zram-control/hot_add file can create ZRAM device nodes in the /dev/ directory. This read allocates kernel memory and is not accounted for a user that triggers the creation of that ZRAM device. With this vulnerability, continually reading the device may consume a large amount of system memory and cause the Out-of-Memory (OOM) killer to activate and terminate random userspace processes, possibly making the system inoperable.","publishedAt":"2020-09-16T00:00:00.000Z","updatedAt":"2026-10-08T21:03:17.359Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"redhat"},"assigner":"redhat","products":["Linux Kernel kernel"],"affected":[{"vendor":"Linux Kernel","product":"kernel","versions":[{"version":"before 5.8-rc6","status":"affected"}]}],"references":["https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=853eab68afc80f59f36bbdeb715e5c88c501e680","https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781","https://www.openwall.com/lists/oss-security/2020/06/18/1","https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html"],"weaknesses":["CWE-732"],"ingestedAt":"2026-10-29T19:46:21.897Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/10xxx/CVE-2020-10781.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2020-10781","state":"PUBLISHED","datePublished":"2020-09-16T00:00:00.000Z","dateUpdated":"2026-10-08T21:03:17.359Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2020-03-20T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A flaw was found in the Linux Kernel before 5.8-rc6 in the ZRAM kernel module, where a user with a local account and the ability to read the /sys/class/zram-control/hot_add file can create ZRAM device nodes in the /dev/ directory. This read allocates kernel memory and is not accounted for a user that triggers the creation of that ZRAM device. With this vulnerability, continually reading the device may consume a large amount of system memory and cause the Out-of-Memory (OOM) killer to activate and terminate random userspace processes, possibly making the system inoperable."}],"affected":[{"vendor":"Linux Kernel","product":"kernel","versions":[{"version":"before 5.8-rc6","status":"affected"}]}],"references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=853eab68afc80f59f36bbdeb715e5c88c501e680"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781"},{"url":"https://www.openwall.com/lists/oss-security/2020/06/18/1"},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html","name":"[debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update","tags":["mailing-list"]}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-732","type":"CWE","lang":"en","description":"CWE-732"}]}],"providerMetadata":{"shortName":"redhat","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateUpdated":"2022-10-07T00:00:00.000Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=853eab68afc80f59f36bbdeb715e5c88c501e680","tags":["x_transferred"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781","tags":["x_transferred"]},{"url":"https://www.openwall.com/lists/oss-security/2020/06/18/1","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html","name":"[debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update","tags":["mailing-list","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T11:14:15.582Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2020-10781","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-08T20:56:32.539491Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-08T21:03:17.359Z"}}]}}}