[ciqlts9_4] Multiple patches tested (5 commits)#1280
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[ciqlts9_4] Multiple patches tested (5 commits)#1280ciq-kernel-automation[bot] wants to merge 5 commits into
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May 27, 2026 07:56
jira VULN-152971 cve CVE-2025-39766 commit-author William Liu <will@willsroot.io> commit 15de71d The following setup can trigger a WARNING in htb_activate due to the condition: !cl->leaf.q->q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb default 1 tc class add dev lo parent 1: classid 1:1 \ htb rate 64bit tc qdisc add dev lo parent 1:1 handle f: \ cake memlimit 1b ping -I lo -f -c1 -s64 -W0.001 127.0.0.1 This is because the low memlimit leads to a low buffer_limit, which causes packet dropping. However, cake_enqueue still returns NET_XMIT_SUCCESS, causing htb_enqueue to call htb_activate with an empty child qdisc. We should return NET_XMIT_CN when packets are dropped from the same tin and flow. I do not believe return value of NET_XMIT_CN is necessary for packet drops in the case of ack filtering, as that is meant to optimize performance, not to signal congestion. Fixes: 046f6fd ("sched: Add Common Applications Kept Enhanced (cake) qdisc") Signed-off-by: William Liu <will@willsroot.io> Reviewed-by: Savino Dicanosa <savy@syst3mfailure.io> Acked-by: Toke Høiland-Jørgensen <toke@toke.dk> Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com> Link: https://patch.msgid.link/20250819033601.579821-1-will@willsroot.io Signed-off-by: Jakub Kicinski <kuba@kernel.org> (cherry picked from commit 15de71d) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
jira VULN-152971 cve CVE-2025-68325 commit-author Xiang Mei <xmei5@asu.edu> commit 9fefc78 In cake_drop(), qdisc_tree_reduce_backlog() is used to update the qlen and backlog of the qdisc hierarchy. Its caller, cake_enqueue(), assumes that the parent qdisc will enqueue the current packet. However, this assumption breaks when cake_enqueue() returns NET_XMIT_CN: the parent qdisc stops enqueuing current packet, leaving the tree qlen/backlog accounting inconsistent. This mismatch can lead to a NULL dereference (e.g., when the parent Qdisc is qfq_qdisc). This patch computes the qlen/backlog delta in a more robust way by observing the difference before and after the series of cake_drop() calls, and then compensates the qdisc tree accounting if cake_enqueue() returns NET_XMIT_CN. To ensure correct compensation when ACK thinning is enabled, a new variable is introduced to keep qlen unchanged. Fixes: 15de71d ("net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit") Signed-off-by: Xiang Mei <xmei5@asu.edu> Reviewed-by: Toke Høiland-Jørgensen <toke@toke.dk> Link: https://patch.msgid.link/20251128001415.377823-1-xmei5@asu.edu Signed-off-by: Paolo Abeni <pabeni@redhat.com> (cherry picked from commit 9fefc78) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
jira VULN-171935 cve CVE-2025-68366 commit-author Zheng Qixing <zhengqixing@huawei.com> commit 1649714 There is one use-after-free warning when running NBD_CMD_CONNECT and NBD_CLEAR_SOCK: nbd_genl_connect nbd_alloc_and_init_config // config_refs=1 nbd_start_device // config_refs=2 set NBD_RT_HAS_CONFIG_REF open nbd // config_refs=3 recv_work done // config_refs=2 NBD_CLEAR_SOCK // config_refs=1 close nbd // config_refs=0 refcount_inc -> uaf ------------[ cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: CPU: 24 PID: 1014 at lib/refcount.c:25 refcount_warn_saturate+0x12e/0x290 nbd_genl_connect+0x16d0/0x1ab0 genl_family_rcv_msg_doit+0x1f3/0x310 genl_rcv_msg+0x44a/0x790 The issue can be easily reproduced by adding a small delay before refcount_inc(&nbd->config_refs) in nbd_genl_connect(): mutex_unlock(&nbd->config_lock); if (!ret) { set_bit(NBD_RT_HAS_CONFIG_REF, &config->runtime_flags); + printk("before sleep\n"); + mdelay(5 * 1000); + printk("after sleep\n"); refcount_inc(&nbd->config_refs); nbd_connect_reply(info, nbd->index); } Fixes: e46c728 ("nbd: add a basic netlink interface") Signed-off-by: Zheng Qixing <zhengqixing@huawei.com> Reviewed-by: Yu Kuai <yukuai@fnnas.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> (cherry picked from commit 1649714) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
jira VULN-171236 cve CVE-2025-68741 commit-author Zilin Guan <zilin@seu.edu.cn> commit 78b1a24 In qla2xxx_process_purls_iocb(), an item is allocated via qla27xx_copy_multiple_pkt(), which internally calls qla24xx_alloc_purex_item(). The qla24xx_alloc_purex_item() function may return a pre-allocated item from a per-adapter pool for small allocations, instead of dynamically allocating memory with kzalloc(). An error handling path in qla2xxx_process_purls_iocb() incorrectly uses kfree() to release the item. If the item was from the pre-allocated pool, calling kfree() on it is a bug that can lead to memory corruption. Fix this by using the correct deallocation function, qla24xx_free_purex_item(), which properly handles both dynamically allocated and pre-allocated items. Fixes: 875386b ("scsi: qla2xxx: Add Unsolicited LS Request and Response Support for NVMe") Signed-off-by: Zilin Guan <zilin@seu.edu.cn> Reviewed-by: Himanshu Madhani <hmadhani2024@gmail.com> Link: https://patch.msgid.link/20251113151246.762510-1-zilin@seu.edu.cn Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> (cherry picked from commit 78b1a24) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
…red blocks jira VULN-178617 cve CVE-2026-23270 commit-author Victor Nogueira <victor@mojatatu.com> commit 11cb63b As Paolo said earlier [1]: "Since the blamed commit below, classify can return TC_ACT_CONSUMED while the current skb being held by the defragmentation engine. As reported by GangMin Kim, if such packet is that may cause a UaF when the defrag engine later on tries to tuch again such packet." act_ct was never meant to be used in the egress path, however some users are attaching it to egress today [2]. Attempting to reach a middle ground, we noticed that, while most qdiscs are not handling TC_ACT_CONSUMED, clsact/ingress qdiscs are. With that in mind, we address the issue by only allowing act_ct to bind to clsact/ingress qdiscs and shared blocks. That way it's still possible to attach act_ct to egress (albeit only with clsact). [1] https://lore.kernel.org/netdev/674b8cbfc385c6f37fb29a1de08d8fe5c2b0fbee.1771321118.git.pabeni@redhat.com/ [2] https://lore.kernel.org/netdev/cc6bfb4a-4a2b-42d8-b9ce-7ef6644fb22b@ovn.org/ Reported-by: GangMin Kim <km.kim1503@gmail.com> Fixes: 3f14b37 ("net/sched: act_ct: fix skb leak and crash on ooo frags") CC: stable@vger.kernel.org Signed-off-by: Victor Nogueira <victor@mojatatu.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Link: https://patch.msgid.link/20260225134349.1287037-1-victor@mojatatu.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> (cherry picked from commit 11cb63b) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
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🤖 Validation Checks In Progress Workflow run: https://github.com/ctrliq/kernel-src-tree/actions/runs/26528854808 |
🔍 Interdiff Analysis
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! REJECTED PATCH2 HUNKS - could not be compared; manual review needed !
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--- b/net/sched/sch_cake.c
+++ b/net/sched/sch_cake.c
@@ -1597,7 +1597,6 @@
qdisc_drop_reason(skb, sch, to_free, SKB_DROP_REASON_QDISC_OVERLIMIT);
sch->q.qlen--;
- qdisc_tree_reduce_backlog(sch, 1, len);
cake_heapify(q, 0);This is an automated interdiff check for backported commits. |
JIRA PR Check Results1 commit(s) with issues found: Commit
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❌ Validation checks completed with issues View full results: https://github.com/ctrliq/kernel-src-tree/actions/runs/26528854808 |
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