Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges. (CVE-2023-2640)
Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges. (CVE-2023-32629)
Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network drivers; - NVME drivers; (CVE-2026-23112, CVE-2026-23273)
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}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8255-1.json"
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{
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},
{
"id": "CVE-2023-32629",
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"type": "CVSS_V3",
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{
"type": "CVSS_V3",
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},
{
"type": "Ubuntu",
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}
]
},
{
"id": "CVE-2026-23112",
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{
"type": "CVSS_V3",
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{
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{
"id": "CVE-2026-23273",
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},
{
"type": "Ubuntu",
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}
]
}
],
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}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8255-1.json"
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{
"type": "CVSS_V3",
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"id": "CVE-2023-32629",
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"type": "CVSS_V3",
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{
"type": "CVSS_V3",
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},
{
"type": "Ubuntu",
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{
"id": "CVE-2026-23112",
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{
"type": "CVSS_V3",
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{
"type": "CVSS_V3",
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"id": "CVE-2026-23273",
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"type": "CVSS_V3",
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]
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}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8255-1.json"