USN-8569-1: Linux kernel (HWE) vulnerabilities

It was discovered that some AMD processors did not properly clear data in the floating point divider unit during speculative execution. A local attacker could use this to expose sensitive information. CVE-2025-54505 It was discovered that some AMD Zen 2 processors did not properly isolate shared...

CVE-2026-64117

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: capture fast-RX rate before mesh reuses skb-cb ieee80211invokefastrx reads RX status through IEEE80211SKBRXCBskb, which aliases the same skb-cb storage that ieee80211rxmeshdata reuses as IEEE80211TXINFO. In the...

CVE-2026-64110

In the Linux kernel, the following vulnerability has been resolved: igc: fix potential skb leak in igcfpexmitsmdframe When igcfpeinittxdescriptor fails, no one takes care of an allocated skb, leaking it. 1 Use devkfreeskbany on failure. Tested on an I226 adapter with the following command, while...

CVE-2026-64035

In the Linux kernel, the following vulnerability has been resolved: igc: set tx buffer type for SMD frames Sashiko pointed out that igcfpeinitsmdframe initializes igctxbuffer fields for an SMD skb, but does not set the buffer type:...

CVE-2026-64024

In the Linux kernel, the following vulnerability has been resolved: tcp: fix stale per-CPU tcptwisn leak enabling ISN prediction Blamed commit moved the TIMEWAIT-derived ISN from the skb control block to a per-CPU variable, assuming the value would always be consumed by tcpconnrequest for the sam...

CVE-2026-63970

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: bind uarg before filling zerocopy skb virtiotransportsendpktinfo allocates or reuses the zerocopy uarg before entering the send loop, but virtiotransportallocskb still fills the skb before it inherits that uarg. Whe...

CVE-2026-63947

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: fix missing length checks in hidpinputreport hidpinputreport reads keyboard and mouse payload data from an skb without first verifying that skb-len contains enough data. hidprecvintrframe pulls the 1-byte HIDP...

CVE-2026-64155 wifi: ath11k: fix error path leaks in some WMI WOW calls

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix error path leaks in some WMI WOW calls Fix two instances where we used to directly return the result of ath11kwmicmdsend.... Because we did not check the return value, we also did not free the skb in the error...

CVE-2026-64155

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix error path leaks in some WMI WOW calls Fix two instances where we used to directly return the result of ath11kwmicmdsend.... Because we did not check the return value, we also did not free the skb in the error...

EUVD-2026-45801

In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: add NULL check for idev in ipv6hopioam Reported by Sashiko: The function ipv6hopioam accesses in6devgetskb-dev-cnf.ioam6enabled without validating the returned idev pointer. Because addrconfifdown can concurrently cle...

CVE-2026-64113

In the Linux kernel, CVE-2026-64113 fixes a use-after-free in ixgbevf when pruning VEPA multicast frames. The function ixgbevf_clean_rx_irq() frees an skb (dev_kfree_skb_irq) and continues, but the skb pointer is kept outside the loop. On the next iteration, the code may dereference freed memory ...

EUVD-2026-45795

In the Linux kernel, the following vulnerability has been resolved: igc: fix potential skb leak in igcfpexmitsmdframe When igcfpeinittxdescriptor fails, no one takes care of an allocated skb, leaking it. 1 Use devkfreeskbany on failure. Tested on an I226 adapter with the following command, while...

CVE-2026-64110

CVE-2026-64110 affects the Linux kernel igc driver logic for transmitting frames on I226 adapters. The vulnerability arises when igc_fpe_init_tx_descriptor() fails and the allocated skb is not freed, causing a potential skb leak in igc_fpe_xmit_smd_frame(). The patch fixes this by ensuring dev_kf...

EUVD-2026-45608

In the Linux kernel, the following vulnerability has been resolved: igc: set tx buffer type for SMD frames Sashiko pointed out that igcfpeinitsmdframe initializes igctxbuffer fields for an SMD skb, but does not set the buffer type:...

CVE-2026-64024

CVE-2026-64024 concerns a Linux kernel issue where a per-CPU tcp_tw_isn leak could enable ISN prediction. The root cause was that TIME_WAIT-derived ISNs were stored in a per-CPU variable and could be consumed by a subsequent SYN if a packet was dropped along several paths (e.g., min_ttl/min_hop, ...

CVE-2026-64007

The CVE concerns the Linux kernel netfilter synproxy path. In synproxy_tstamp_adjust, the code rewrites the TCP timestamp in place and then updates the TCP checksum via inet_proto_csum_replace4() on a caller-supplied tcphdr pointer. Between retrieving the pointer (via skb_header_pointer) and use,...

CVE-2026-64007 netfilter: synproxy: refresh tcphdr after skb_ensure_writable

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: refresh tcphdr after skbensurewritable synproxytstampadjust rewrites the TCP timestamp option in place and then patches the TCP checksum via inetprotocsumreplace4 on the caller-supplied tcphdr pointer. Both...

EUVD-2026-45564

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: 6lowpan: check skbclone return value in sendmcastpkt The skbclone function can return NULL if memory allocation fails. sendmcastpkt calls skbclone without checking the return value, which can lead to a NULL pointer...

CVE-2026-63983 net/sched: fix packet loop on netem when duplicate is on

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix packet loop on netem when duplicate is on When netem duplicates a packet it re-enqueues the copy at the root qdisc. If another netem sits in the tree the copy can be duplicated again, recursing until the stack or...

CVE-2026-63983 net/sched: fix packet loop on netem when duplicate is on

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix packet loop on netem when duplicate is on When netem duplicates a packet it re-enqueues the copy at the root qdisc. If another netem sits in the tree the copy can be duplicated again, recursing until the stack or...