{"id":"USN-6338-2","summary":"linux-gcp, linux-gcp-6.2, linux-ibm, linux-oracle, linux-starfive vulnerabilities","details":"Zi Fan Tan discovered that the binder IPC implementation in the Linux\nkernel contained a use-after-free vulnerability. A local attacker could use\nthis to cause a denial of service (system crash) or possibly execute\narbitrary code. (CVE-2023-21255)\n\nIt was discovered that a race condition existed in the f2fs file system in\nthe Linux kernel, leading to a null pointer dereference vulnerability. An\nattacker could use this to construct a malicious f2fs image that, when\nmounted and operated on, could cause a denial of service (system crash).\n(CVE-2023-2898)\n\nIt was discovered that the DVB Core driver in the Linux kernel did not\nproperly handle locking events in certain situations. A local attacker\ncould use this to cause a denial of service (kernel deadlock).\n(CVE-2023-31084)\n\nQuentin Minster discovered that the KSMBD implementation in the Linux\nkernel did not properly handle session setup requests. A remote attacker\ncould possibly use this to cause a denial of service (memory exhaustion).\n(CVE-2023-32247)\n\nQuentin Minster discovered that a race condition existed in the KSMBD\nimplementation in the Linux kernel when handling sessions operations. A\nremote attacker could use this to cause a denial of service (system crash)\nor possibly execute arbitrary code. (CVE-2023-32250, CVE-2023-32252,\nCVE-2023-32257)\n\nIt was discovered that a race condition existed in the KSMBD implementation\nin the Linux kernel when handling session connections, leading to a use-\nafter-free vulnerability. A remote attacker could use this to cause a\ndenial of service (system crash) or possibly execute arbitrary code.\n(CVE-2023-32258)\n\nIt was discovered that the KSMBD implementation in the Linux kernel did not\nproperly validate buffer sizes in certain operations, leading to an out-of-\nbounds read vulnerability. A remote attacker could use this to cause a\ndenial of service (system crash) or possibly expose sensitive information.\n(CVE-2023-38426, CVE-2023-38428)\n\nIt was discovered that the KSMBD implementation in the Linux kernel did not\nproperly calculate the size of certain buffers. A remote attacker could use\nthis to cause a denial of service (system crash) or possibly execute\narbitrary code. (CVE-2023-38429)\n","modified":"2026-02-10T04:43:18Z","published":"2023-09-08T22:26:36Z","related":["UBUNTU-CVE-2023-21255","UBUNTU-CVE-2023-2898","UBUNTU-CVE-2023-31084","UBUNTU-CVE-2023-32247","UBUNTU-CVE-2023-32250","UBUNTU-CVE-2023-32252","UBUNTU-CVE-2023-32257","UBUNTU-CVE-2023-32258","UBUNTU-CVE-2023-38426","UBUNTU-CVE-2023-38428","UBUNTU-CVE-2023-38429"],"upstream":["CVE-2023-21255","CVE-2023-2898","CVE-2023-31084","CVE-2023-32247","CVE-2023-32250","CVE-2023-32252","CVE-2023-32257","CVE-2023-32258","CVE-2023-38426","CVE-2023-38428","CVE-2023-38429","UBUNTU-CVE-2023-21255","UBUNTU-CVE-2023-2898","UBUNTU-CVE-2023-31084","UBUNTU-CVE-2023-32247","UBUNTU-CVE-2023-32250","UBUNTU-CVE-2023-32252","UBUNTU-CVE-2023-32257","UBUNTU-CVE-2023-32258","UBUNTU-CVE-2023-38426","UBUNTU-CVE-2023-38428","UBUNTU-CVE-2023-38429"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6338-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-2898"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-21255"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-31084"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-32247"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-32250"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-32252"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-32257"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-32258"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-38426"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-38428"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-38429"}],"affected":[{"package":{"name":"linux-gcp-6.2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/linux-gcp-6.2@6.2.0-1013.13~22.04.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.0-1013.13~22.04.1"}]}],"versions":["6.2.0-1009.9~22.04.3","6.2.0-1010.10~22.04.1","6.2.0-1011.11~22.04.1","6.2.0-1011.11~22.04.3","6.2.0-1012.12~22.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"linux-buildinfo-6.2.0-1013-gcp","binary_version":"6.2.0-1013.13~22.04.1"},{"binary_name":"linux-gcp-6.2-headers-6.2.0-1013","binary_version":"6.2.0-1013.13~22.04.1"},{"binary_name":"linux-gcp-6.2-tools-6.2.0-1013","binary_version":"6.2.0-1013.13~22.04.1"},{"binary_name":"linux-headers-6.2.0-1013-gcp","binary_version":"6.2.0-1013.13~22.04.1"},{"binary_name":"linux-image-unsigned-6.2.0-1013-gcp","binary_version":"6.2.0-1013.13~22.04.1"},{"binary_name":"linux-modules-6.2.0-1013-gcp","binary_version":"6.2.0-1013.13~22.04.1"},{"binary_name":"linux-modules-extra-6.2.0-1013-gcp","binary_version":"6.2.0-1013.13~22.04.1"},{"binary_name":"linux-modules-iwlwifi-6.2.0-1013-gcp","binary_version":"6.2.0-1013.13~22.04.1"},{"binary_name":"linux-tools-6.2.0-1013-gcp","binary_version":"6.2.0-1013.13~22.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6338-2.json","cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2023-2898"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-21255"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2023-31084"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-32247"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-32250"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-32252"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-32257"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-32258"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-38426"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-38428"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-38429"}]}}}],"schema_version":"1.7.3"}