USN-8426-1: Linux kernel (Azure) vulnerabilities
摘要
Several security issues were fixed in the Linux kernel.
正文
It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-31431) It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processing paged fragments. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43284, CVE-2026-43500) It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43503, CVE-2026-46300) Qualys discovered that a race condition existed in the ptrace subsystem of the Linux kernel when privileged processes are exiting. An unprivileged local attacker could use this issue to expose sensitive information. (CVE-2026-46333) 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: - Cryptographic API; - Ethernet bonding driver; - SMB network file system; - Netfilter; - io_uring subsystem; - Packet sockets; - RDS protocol; - TLS protocol; (CVE-2024-35862, CVE-2024-50060, CVE-2026-23274, CVE-2026-23351, CVE-2026-31419, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078, CVE-2026-43494, CVE-2026-46028)
标签
- release:focal
- release:jammy
- USN
扩展字段
{
"cve_ids": [
"CVE-2026-46333",
"CVE-2026-43284",
"CVE-2026-23274",
"CVE-2026-46300",
"CVE-2026-31533",
"CVE-2024-35862",
"CVE-2026-23351",
"CVE-2026-31504",
"CVE-2026-43503",
"CVE-2026-46028",
"CVE-2026-31419",
"CVE-2024-50060",
"CVE-2026-31431",
"CVE-2026-43494",
"CVE-2026-43500",
"CVE-2026-43033",
"CVE-2026-43077",
"CVE-2026-43078"
],
"guid": "https://ubuntu.com/security/notices/USN-8426-1",
"instructions": "After a standard system update you need to reboot your computer to make\nall the necessary changes.\n\nATTENTION: Due to an unavoidable ABI change the kernel updates have\nbeen given a new version number, which requires you to recompile and\nreinstall all third party kernel modules you might have installed.\nUnless you manually uninstalled the standard kernel metapackages\n(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,\nlinux-powerpc), a standard system upgrade will automatically perform\nthis as well.\n",
"raw_pub_date": "Thu, 11 Jun 2026 21:57:52 +0000",
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