CVE-2026-23064 — net/sched: act_ife: avoid possible NULL deref

Affected: Linux

In the Linux kernel, the following vulnerability has been resolved:

net/sched: act_ife: avoid possible NULL deref

tcf_ife_encode() must make sure ife_encode() does not return NULL.

syzbot reported:

Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:ife_tlv_meta_encode+0x41/0xa0 net/ife/ife.c:166 CPU: 3 UID: 0 PID: 8990 Comm: syz.0.696 Not tainted syzkaller #0 PREEMPT(full) Call Trace: <TASK> ife_encode_meta_u32+0x153/0x180 net/sched/act_ife.c:101 tcf_ife_encode net/sched/act_ife.c:841 [inline] tcf_ife_act+0x1022/0x1de0 net/sched/act_ife.c:877 tc_act include/net/tc_wrapper.h:130 [inline] tcf_action_exec+0x1c0/0xa20 net/sched/act_api.c:1152 tcf_exts_exec include/net/pkt_cls.h:349 [inline] mall_classify+0x1a0/0x2a0 net/sched/cls_matchall.c:42 tc_classify include/net/tc_wrapper.h:197 [inline] __tcf_classify net/sched/cls_api.c:1764 [inline] tcf_classify+0x7f2/0x1380 net/sched/cls_api.c:1860 multiq_classify net/sched/sch_multiq.c:39 [inline] multiq_enqueue+0xe0/0x510 net/sched/sch_multiq.c:66 dev_qdisc_enqueue+0x45/0x250 net/core/dev.c:4147 __dev_xmit_skb net/core/dev.c:4262 [inline] __dev_queue_xmit+0x2998/0x46c0 net/core/dev.c:4798

USN-8162-1 — linux-nvidia-tegra-5.15 vulnerabilities

Affected: Ubuntu:Pro:20.04:LTS: linux-nvidia-tegra-5.15

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: - ARM64 architecture; - Block layer subsystem; - Cryptographic API; - Drivers core; - Bluetooth drivers; - DMA engine subsystem; - GPU drivers; - HID subsystem; - Intel Trace Hub HW tracing drivers; - IIO ADC drivers; - IRQ chip drivers; - Modular ISDN driver; - LED subsystem; - UACCE accelerator framework; - Ethernet bonding driver; - Network drivers; - STMicroelectronics network drivers; - Ethernet team driver; - NVME drivers; - PHY drivers; - SLIMbus drivers; - W1 Dallas's 1-wire bus driver; - Xen hypervisor drivers; - BTRFS file system; - Ext4 file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - NTFS3 file system; - SMB network file system; - NFC subsystem; - BPF subsystem; - IRQ subsystem; - Memory management; - Bluetooth subsystem; - CAN network layer; - Networking core; - IPv4 networking; - IPv6 networking; - L2TP protocol; - Netfilter; - NET/ROM layer; - Network traffic control; - SCTP protocol; - TLS protocol; - XFRM subsystem; - Creative Sound Blaster X-Fi driver; - USB sound devices; (CVE-2023-53421, CVE-2023-53520, CVE-2023-53662, CVE-2023-54207, CVE-2025-37849, CVE-2025-38057, CVE-2025-38125, CVE-2025-38232, CVE-2025-38408, CVE-2025-38591, CVE-2025-4014…

Most recent entries from all

CVE-2026-23064 — net/sched: act_ife: avoid possible NULL deref

USN-8162-1 — linux-nvidia-tegra-5.15 vulnerabilities