Summary
Hangyu Hua discovered that the Flower classifier implementation in the
Linux kernel contained an out-of-bounds write vulnerability. An attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2023-35788, LP: #2023577)
Xingyuan Mo and Gengjia Chen discovered that the io_uring subsystem in the
Linux kernel did not properly handle locking when IOPOLL mode is being
used. A local attacker could use this to cause a denial of service (system
crash). (CVE-2023-2430)
It was discovered that for some Intel processors the INVLPG instruction
implementation did not properly flush global TLB entries when PCIDs are
enabled. An attacker could use this to expose sensitive information
(kernel memory) or possibly cause undesired behaviors. (LP: #2023220)
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | linux-allwinner-5.19 | 5.19.0-1015.15~22.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-aws-5.19 | 5.19.0-1028.29~22.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-gcp-5.19 | 5.19.0-1027.29~22.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-hwe-5.19 | 5.19.0-46.47~22.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-starfive-5.19 | 5.19.0-1020.22~22.04.1 |
Vulnerabilities 2
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High 7.8CVE-2023-35788 Public exploit
An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an o…
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Medium 5.5
A vulnerability was found due to missing lock for IOPOLL flaw in io_cqring_event_overflow() in io_uring.c in Linux Kern…