Database/Kernel, userspace & hypervisor

Linux (Xen netback): Buffer overrun in netback due to an unusual packet - guest attacks dom0
CVSS 7.8CVE-2023-34319Kernel, userspace & hypervisorXSA-432curated
Impact
Buffer overrun in netback due to an unusual packet - guest attacks dom0
Who can reach it
Tenant VM guest
What to do
dom0 kernel patch; livepatchable, otherwise dom0 reboot (evacuates every guest on the host)
References
Related entries
- Xen (64-bit PV): Top-level shadow reference dropped too early for 64-bit PV guests - privilege escalation to hostCVE-2023-34322 · Xen (64-bit PV)High
- Xen (libfsimage/pygrub): Multiple vulnerabilities in libfsimage disk handlingCVE-2023-34325 · Xen (libfsimage/pygrub)High
- Linux kernel (nf_tables): Stack out-of-bounds read/write in nft_byteorder_eval() - local root (Pwn2Own)CVE-2023-35001 · Linux kernel (nf_tables)High
- Linux kernel (netfilter pipapo): UAF from improper element removal in nft_pipapo_remove() - local rootCVE-2023-4004 · Linux kernel (netfilter pipapo)High
- Linux kernel (nf_tables): UAF adding a rule with NFTA_RULE_CHAIN_ID - local rootCVE-2023-4147 · Linux kernel (nf_tables)High
- Linux kernel (net/sched hfsc): Use-after-free in sch_hfsc qdisc - local rootCVE-2023-4623 · Linux kernel (net/sched hfsc)High
This entry is curated: imported from vendor advisories with machine assistance, not yet individually verified. Confirm against your vendor's advisory before acting, and report anything wrong.