[ciqlts9_2] CVE-2022-50356 #728
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jira VULN-155243 cve-pre CVE-2022-50356 commit-author Zhengchao Shao <shaozhengchao@huawei.com> commit c19d893 qdisc_reset() is clearing qdisc->q.qlen and qdisc->qstats.backlog _after_ calling qdisc->ops->reset. There is no need to clear them again in the specific reset function. Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Link: https://lore.kernel.org/r/20220824005231.345727-1-shaozhengchao@huawei.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> (cherry picked from commit c19d893) Signed-off-by: Roxana Nicolescu <rnicolescu@ciq.com>
jira VULN-155243 cve CVE-2022-50356 commit-author Zhengchao Shao <shaozhengchao@huawei.com> commit 2a3fc78 When the default qdisc is sfb, if the qdisc of dev_queue fails to be inited during mqprio_init(), sfb_reset() is invoked to clear resources. In this case, the q->qdisc is NULL, and it will cause gpf issue. The process is as follows: qdisc_create_dflt() sfb_init() tcf_block_get() --->failed, q->qdisc is NULL ... qdisc_put() ... sfb_reset() qdisc_reset(q->qdisc) --->q->qdisc is NULL ops = qdisc->ops The following is the Call Trace information: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] RIP: 0010:qdisc_reset+0x2b/0x6f0 Call Trace: <TASK> sfb_reset+0x37/0xd0 qdisc_reset+0xed/0x6f0 qdisc_destroy+0x82/0x4c0 qdisc_put+0x9e/0xb0 qdisc_create_dflt+0x2c3/0x4a0 mqprio_init+0xa71/0x1760 qdisc_create+0x3eb/0x1000 tc_modify_qdisc+0x408/0x1720 rtnetlink_rcv_msg+0x38e/0xac0 netlink_rcv_skb+0x12d/0x3a0 netlink_unicast+0x4a2/0x740 netlink_sendmsg+0x826/0xcc0 sock_sendmsg+0xc5/0x100 ____sys_sendmsg+0x583/0x690 ___sys_sendmsg+0xe8/0x160 __sys_sendmsg+0xbf/0x160 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f2164122d04 </TASK> Fixes: e13e02a ("net_sched: SFB flow scheduler") Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> (cherry picked from commit 2a3fc78) Signed-off-by: Roxana Nicolescu <rnicolescu@ciq.com>
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hmmm why does this have my name 😅 |
Contributor
Yeah, not the end of the world, but it should be fixed. |
roxanan1996
changed the title
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Author
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This is going to be the first PR so we won't have kselftest results to compare against. |
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Kselftests locally since there's no reference to test against |
Contributor
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Let's keep an eye if the next pull requests use this as kselftest comparison. |
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Summary
This PR has been automatically created after successful completion of all CI stages.
Commit Message(s)
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✅ Build Stage
✅ Boot Verification
✅ Kernel Selftests
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Run ID: 19712705020