CVE-2022-48911: netfilter: nf_queue: fix possible use-after-free
First published: Thu Aug 22 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_queue: fix possible use-after-free Eric Dumazet says: The sock_hold() side seems suspect, because there is no guarantee that sk_refcnt is not already 0. On failure, we cannot queue the packet and need to indicate an error. The packet will be dropped by the caller. v2: split skb prefetch hunk into separate change
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.29<4.9.305 | |
| Linux Kernel | >=4.10<4.14.270 | |
| Linux Kernel | >=4.15<4.19.233 | |
| Linux Kernel | >=4.20<5.4.183 | |
| Linux Kernel | >=5.5<5.10.104 | |
| Linux Kernel | >=5.11<5.15.27 | |
| Linux Kernel | >=5.16<5.16.13 | |
| Linux Kernel | =5.17-rc1 | |
| Linux Kernel | =5.17-rc2 | |
| Linux Kernel | =5.17-rc3 | |
| Linux Kernel | =5.17-rc4 | |
| Linux Kernel | =5.17-rc5 | |
| Linux Kernel | =5.17-rc6 |
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Reference Links
- https://git.kernel.org/stable/c/21b27b2baa27423286e9b8d3f0b194d587083d95
- https://git.kernel.org/stable/c/ef97921ccdc243170fcef857ba2a17cf697aece5
- https://git.kernel.org/stable/c/34dc4a6a7f261736ef7183868a5bddad31c7f9e3
- https://git.kernel.org/stable/c/43c25da41e3091b31a906651a43e80a2719aa1ff
- https://git.kernel.org/stable/c/4d05239203fa38ea8a6f31e228460da4cb17a71a
- https://git.kernel.org/stable/c/dd648bd1b33a828f62befa696b206c688da0ec43
- https://git.kernel.org/stable/c/dcc3cb920bf7ba66ac5e9272293a9ba5f80917ee
- https://git.kernel.org/stable/c/c3873070247d9e3c7a6b0cf9bf9b45e8018427b1
Frequently Asked Questions
What is the severity of CVE-2022-48911?
CVE-2022-48911 has been classified as a medium severity vulnerability.
How do I fix CVE-2022-48911?
To fix CVE-2022-48911, it is recommended to upgrade to the latest stable version of the Linux kernel that addresses this vulnerability.
What software versions are affected by CVE-2022-48911?
CVE-2022-48911 affects various versions of the Linux kernel ranging from 2.6.29 to 5.17-rc6.
What type of vulnerability is CVE-2022-48911?
CVE-2022-48911 is identified as a use-after-free vulnerability within the netfilter component of the Linux kernel.
Who reported the CVE-2022-48911 vulnerability?
CVE-2022-48911 was reported by Eric Dumazet.
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