CVE-2026-31422None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: net/sched: cls_flow: fix NULL pointer dereference on shared blocks flow_change() calls tcf_block_q() and dereferences q->handle to derive a default baseclass. Shared …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
net/sched: cls_flow: fix NULL pointer dereference on shared blocks
flow_change() calls tcf_block_q() and dereferences q->handle to derive a default baseclass. Shared blocks leave block->q NULL, causing a NULL deref when a flow filter without a fully qualified baseclass is created on a shared block.
Check tcf_block_shared() before accessing block->q and return -EINVAL for shared blocks. This avoids the null-deref shown below:
Linux >= 1abf272022cf1d18469405f47b4ec49c6a3125db < 57f94ac7e953eece5ed4819605a18f3cdfc63dccLinux >= 1abf272022cf1d18469405f47b4ec49c6a3125db < 942813276edeb1741fa5b0a73471beb4e495fa08Linux >= 1abf272022cf1d18469405f47b4ec49c6a3125db < cc707a4fd4c3b6ab2722e06bc359aa010e13d408Linux >= 1abf272022cf1d18469405f47b4ec49c6a3125db < 4a09f72007201c9f667dc47f64517ec23eea65e5Linux >= 1abf272022cf1d18469405f47b4ec49c6a3125db < 9bf5fc36a43f7b8b5507c96e74fb81f1e8b4957eLinux >= 1abf272022cf1d18469405f47b4ec49c6a3125db < a208c3e1232997e9317887294c20008dfcb75449Linux >= 1abf272022cf1d18469405f47b4ec49c6a3125db < 415ea0c973c754b9f375225807810eb9045f4293Linux >= 1abf272022cf1d18469405f47b4ec49c6a3125db < 1a280dd4bd1d616a01d6ffe0de284c907b555504Linux 4.15Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-68286NoneIn the Linux kernel, the following vulnerability has been resolved: drop_monitor: perform u64_stats updates under IRQ-disabled section In net_dm_packet_trace_kfree_skb_hit() and net_dm_hw_trap_packet_probe(), u64_stats_update_begin() /…
CVE-2026-68337NoneIn the Linux kernel, the following vulnerability has been resolved: bpf: Reject redirect helpers without a bpf_net_context The bpf_redirect*() helpers and skb_do_redirect() obtain the per-task bpf_redirect_info via bpf_net_ctx_get_ri()…
CVE-2026-68287High· 7.5In the Linux kernel, the following vulnerability has been resolved: drop_monitor: fix size calculations for 64-bit attributes net_dm_packet_report_fill() and net_dm_hw_packet_report_fill() use nla_put_u64_64bit() to append 64-bit attri…
CVE-2026-68288NoneIn the Linux kernel, the following vulnerability has been resolved: net: drop_monitor: fix info leak in NET_DM_ATTR_PAYLOAD net_dm_packet_report_fill() and net_dm_hw_packet_report_fill() open code the NET_DM_ATTR_PAYLOAD attribute to a…
CVE-2026-68289NoneIn the Linux kernel, the following vulnerability has been resolved: tipc: fix integer overflow in tipc_recvmsg() and tipc_recvstream() In tipc_recvmsg(), the copy length is computed as: copy = min_t(int, dlen - offset, buflen); buf…
CVE-2026-68303NoneIn the Linux kernel, the following vulnerability has been resolved: drm/vc4: hvs/v3d: Fix null dereference in unbind The hvs and v3d drivers use dev_get_drvdata(master) in their unbind functions