An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.
The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.
We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | kernel | 2023-08-03 20:16 | ALAS-2023-1792 |
Amazon Linux 2 - Core | kernel | 2023-08-03 18:09 | ALAS2-2023-2179 |
Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2023-08-03 19:42 | ALAS2KERNEL-5.10-2023-038 |
Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2023-08-03 19:42 | ALAS2KERNEL-5.15-2023-025 |
Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2023-08-03 19:42 | ALAS2KERNEL-5.4-2023-050 |
Amazon Linux 2023 | kernel | 2023-08-17 11:20 | ALAS2023-2023-299 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |