CVE-2023-53559
What it is
In the Linux kernel, the following vulnerability has been resolved: ip_vti: fix potential slab-use-after-free in decode_session6 When ip_vti device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when ip_vti device sends IPv6 packets. As commit f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") showed, xfrm_decode_session was originally intended only for the receive path. IP6CB(skb)->nhoff is not set during transmission. Therefore, set the cb field in the skb to 0 before sending packets.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-416 · Use after free
- Record status
- Modified
Affected
- Linux Kernel < 4.14.324
- Linux Kernel < 4.19.293
- Linux Kernel < 5.4.255
- Linux Kernel < 5.10.192
- Linux Kernel < 5.15.128
- Linux Kernel < 6.1.47
- Linux Kernel < 6.4.12
- Linux Kernel 3.19
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2023-53559.md and follow it. Check whether this project is affected by CVE-2023-53559. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/0b4d69539fdea138af2befe08893850c89248068
- https://git.kernel.org/stable/c/2b05bf5dc437f7891dd409a3eaf5058459391c7a
- https://git.kernel.org/stable/c/6018a266279b1a75143c7c0804dd08a5fc4c3e0b
- https://git.kernel.org/stable/c/78e397a43e1c47321a4679cc49a6c4530bf820b9
- https://git.kernel.org/stable/c/7dfe23659f3677c08a60a0056cda2d91a79c15ca
- https://git.kernel.org/stable/c/82fb41c5de243e7dfa90f32ca58e35adaff56c1d
- https://git.kernel.org/stable/c/d34c30442d5e53a33cde79ca163320dbe2432cbd
- https://git.kernel.org/stable/c/e1e04cc2ef2c0c0866c19f5627149a76c2baae32
References
- https://git.kernel.org/stable/c/0b4d69539fdea138af2befe08893850c89248068
- https://git.kernel.org/stable/c/2b05bf5dc437f7891dd409a3eaf5058459391c7a
- https://git.kernel.org/stable/c/6018a266279b1a75143c7c0804dd08a5fc4c3e0b
- https://git.kernel.org/stable/c/78e397a43e1c47321a4679cc49a6c4530bf820b9
- https://git.kernel.org/stable/c/7dfe23659f3677c08a60a0056cda2d91a79c15ca
- https://git.kernel.org/stable/c/82fb41c5de243e7dfa90f32ca58e35adaff56c1d
- https://git.kernel.org/stable/c/d34c30442d5e53a33cde79ca163320dbe2432cbd
- https://git.kernel.org/stable/c/e1e04cc2ef2c0c0866c19f5627149a76c2baae32