UBUNTU-CVE-2026-80977

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: don't touch shared zerocopy state in skbtxerror skbtxerror completes the zerocopy uarg and clears SKBFLALLZEROCOPY, and skbzcopydowngrademanaged clears SKBFLMANAGEDFRAGREFS. Both live in skbshinfo, which every clone...

CVE-2026-80977

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: don't touch shared zerocopy state in skbtxerror skbtxerror completes the zerocopy uarg and clears SKBFLALLZEROCOPY, and skbzcopydowngrademanaged clears SKBFLMANAGEDFRAGREFS. Both live in skbshinfo, which every clone...

CVE-2026-80977

CVE-2026-80977 affects the Linux kernel networking subsystem , specifically the skb_tx_error() function in the skbuff layer. When a cloned socket buffer is processed, skb_tx_error() prematurely clears shared zerocopy state (SKBFL_ALL_ZEROCOPY) and drops SKBFL_SHARED_FRAG while the original skb is...