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Tracker / CVE-2024-49982

CVE-2024-49982

High 8.8

In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in more places For fixing CVE-2023-6270, f98364e92662 ("aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts") makes tx() calling dev_put() instead of doing in aoecmd_cfg_pkts(). It avoids that the tx() runs into use-after-free. Then Nicolai Stange found more places in aoe have potential use-after-free problem with tx(). e.g. revalidate(), aoecmd_ata_rw(), resend(), probe() and aoecmd_cfg_rsp(). Those functions also use aoenet_xmit() to push packet to tx queue. So they should also use dev_hold() to increase the refcnt of skb->dev. On the other hand, moving dev_put() to tx() causes that the refcnt of skb->dev be reduced to a negative value, because corresponding dev_hold() are not called in revalidate(), aoecmd_ata_rw(), resend(), probe(), and aoecmd_cfg_rsp(). This patch fixed this issue.

Affected products and versions

linux linux_kernel
linux linux_kernel · 5.10.214 → 5.10.227
linux linux_kernel · 5.15.153 → 5.15.168
linux linux_kernel · 6.1.83 → 6.1.113
linux linux_kernel · 6.11 → 6.11.3
linux linux_kernel · 6.6.23 → 6.6.55
linux linux_kernel · 6.7.11 → 6.8.2
linux linux_kernel · 6.9 → 6.10.14

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References