Azure Linux 3.0 Security Update: kernel (CVE-2024-44946)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-44946 advisory. - In the Linux kernel, the following vulnerability has been resolved: kcm: Serialise kcmsendmsg for the same...

CVE-2024-44946

In the Linux kernel, the following vulnerability has been resolved: kcm: Serialise kcmsendmsg for the same socket. syzkaller reported UAF in kcmrelease. 0 The scenario is 1. Thread A builds a skb with MSGMORE and sets kcm-seqskb. 2. Thread A resumes building skb from kcm-seqskb but is blocked by...

CVE-2024-44946

CVE-2024-44946 affects the Linux kernel kcm subsystem (kcm_sendmsg). The issue was a use-after-free/race: while MSG_MORE skb construction was in progress, another thread could touch it, leading to a double-free in kcm_release() when the skb remained in the write queue. The fix serialises kcm_send...