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CVE-2023-53827

HIGHCVSS 8.8/10EPSS 0.23%

Last modified

CVE-2023-53827 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} Similar to commit d0be8347c623 ("Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put"), just use l2cap_chan_hold_unless_zero to prevent referencing a channel that is about to be destroyed.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} Similar to commit d0be8347c623 ("Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put"), just use l2cap_chan_hold_unless_zero to prevent referencing a channel that is about to be destroyed.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.23%

13.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < f2d38e77aa5f3effc143e7dd24da8acf02925958; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < 1351551aa9058e07a20a27a158270cf84fcde621; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < c02421992505c95c7f3c9ad59ee35e22eac60988; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < d9ba36c22a7bb09d6bac4cc2f243eff05da53f43; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < ac6725a634f7e8c0330610a8527f20c730b61115; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < 348d446762e7c70778df8bafbdf3fa0df2123f58; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < a2a9339e1c9deb7e1e079e12e27a0265aea8421a
LinuxLinux3.5

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2023-53827?
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} Similar to commit d0be8347c623 ("Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put"), just use l2cap_chan_hold_unless_zero to prevent referencing a channel that is about to be destroyed.
How severe is CVE-2023-53827?
CVE-2023-53827 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.
How do I fix CVE-2023-53827?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST