CVE-2022-49975None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: bpf: Don't redirect packets with invalid pkt_len Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The r…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.3%
In the Linux kernel, the following vulnerability has been resolved:
bpf: Don't redirect packets with invalid pkt_len
Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The root cause, as the [2] says, is because that bpf_prog_test_run_skb() run a bpf prog which redirects empty skbs. So we should determine whether the length of the packet modified by bpf prog or others like bpf_prog_test is valid before forwarding it directly.
Linux >= 5293efe62df81908f2e90c9820c7edcc8e61f5e9 < 8b68e53d56697a59b5c53893b53f508bbdf272a0Linux >= 5293efe62df81908f2e90c9820c7edcc8e61f5e9 < 6204bf78b2a903b96ba43afff6abc0b04d6e0462Linux >= 5293efe62df81908f2e90c9820c7edcc8e61f5e9 < a75987714bd2d8e59840667a28e15c1fa5c47554Linux >= 5293efe62df81908f2e90c9820c7edcc8e61f5e9 < 72f2dc8993f10262092745a88cb2dd0fef094f23Linux >= 5293efe62df81908f2e90c9820c7edcc8e61f5e9 < fd1894224407c484f652ad456e1ce423e89bb3ebLinux 4.9Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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