CVE-2023-52735

Description

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself sock_map proto callbacks should never call themselves by design. Protect against bugs like [1] and break out of the recursive loop to avoid a stack overflow in favor of a resource leak. [1] https://lore.kernel.org/all/00000000000073b14905ef2e7401@google.com/

CVSS Metrics

• v3.1•CRITICAL•Score: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

• CWE-120•Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

  The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Affected Systems

• linux•linux

  ≥ c5cc0d23c5414d23438c5024890e367cc5a0e645, < f312367f5246e04df564d341044286e9e37a97ba | ≥ c5d2177a72a1659554922728fc407f59950aa929, < 7499859881488da97589f3c79cc66fa75748ad49 | ≥ c5d2177a72a1659554922728fc407f59950aa929, < 5b4a79ba65a1ab479903fff2e604865d229b70a9 | 0580e47c8895a4d61ee095f086cba1ded7ca5e7f | ≥ 5.15.3, < 5.15.95 | ≥ 5.14.19, < 5.15 | 5.16

• linux•linux_kernel

  < 5.15.95 | ≥ 5.16, < 6.1.13 | 6.2:rc1 | 6.2:rc2 | 6.2:rc3 | 6.2:rc4 | 6.2:rc5 | 6.2:rc6

References (3)

• https://git.kernel.org/stable/c/f312367f5246e04df564d341044286e9e37a97ba
• https://git.kernel.org/stable/c/7499859881488da97589f3c79cc66fa75748ad49
• https://git.kernel.org/stable/c/5b4a79ba65a1ab479903fff2e604865d229b70a9