9.1

CVE-2023-52735: bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself

Analyzed
AliasesUBUNTU-CVE-2023-52735DEBIAN-CVE-2023-52735
Published 21-05-2024Last modified 23-05-2026

Vulnerability summary

CVE-2023-52735 is a critical (CVSS 9.1) vulnerability in linux. EPSS estimates a 1.22% chance of exploitation in the next 30 days, higher than 68.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.1 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
1.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 15 · Related 12
RHSA-2023:6583RHSA-2024:5672RHSA-2024:5673SUSE-SU-2024:2372-1SUSE-SU-2024:2394-1SUSE-SU-2024:2571-1

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

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

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.22%

Chance of exploitation in the next 30 days

Percentile

69%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu99 products
  • linuxAll versions (No fix recorded) | < 5.15.0-72.79
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1036.40
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c5cc0d23c5414d23438c5024890e367cc5a0e645, < f312367f5246e04df564d341044286e9e37a97ba | ≥ c5d2177a72a1659554922728fc407f59950aa929, < 7499859881488da97589f3c79cc66fa75748ad49 | ≥ c5d2177a72a1659554922728fc407f59950aa929, < 5b4a79ba65a1ab479903fff2e604865d229b70a9 | 0580e47c8895a4d61ee095f086cba1ded7ca5e7f | ≥ 5.15.3, < 5.15.95 | ≥ 5.14.19, < 5.15 | 5.16
  • 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
Debian1 product
  • linux< 6.1.15-1

3 vendors · 102 products

References

7 links