5.5

CVE-2023-52877: usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()

Analyzed
AliasesUBUNTU-CVE-2023-52877DEBIAN-CVE-2023-52877
Published 21-05-2024Last modified 11-05-2026

Vulnerability summary

CVE-2023-52877 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.22%
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 13 · Related 10
RHSA-2024:4211RHSA-2024:4352RHSA-2025:13135SUSE-SU-2024:2008-1SUSE-SU-2024:2011-1SUSE-SU-2024:2019-1

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm() It is possible that typec_register_partner() returns ERR_PTR on failure. When port->partner is an error, a NULL pointer dereference may occur as shown below. [91222.095236][ T319] typec port0: failed to register partner (-17) ... [91225.061491][ T319] Unable to handle kernel NULL pointer dereference at virtual address 000000000000039f [91225.274642][ T319] pc : tcpm_pd_data_request+0x310/0x13fc [91225.274646][ T319] lr : tcpm_pd_data_request+0x298/0x13fc [91225.308067][ T319] Call trace: [91225.308070][ T319] tcpm_pd_data_request+0x310/0x13fc [91225.308073][ T319] tcpm_pd_rx_handler+0x100/0x9e8 [91225.355900][ T319] kthread_worker_fn+0x178/0x58c [91225.355902][ T319] kthread+0x150/0x200 [91225.355905][ T319] ret_from_fork+0x10/0x30 Add a check for port->partner to avoid dereferencing a NULL pointer.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu104 products
  • linux< 5.15.0-100.110
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1056.61
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < e5f53a68a596e04df3fde3099273435a30b6fdac | ≥ 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < e7a802447c491903aa7cb45967aa2a934a4e63fc | ≥ 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < 9ee038590d808a95d16adf92818dcd4752273c08 | ≥ 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < b37a168c0137156042a0ca9626651b5a789e822b | ≥ 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < 4987daf86c152ff882d51572d154ad12e4ff3a4b | 5.12
  • linux_kernel≥ 5.12, < 5.15.138 | ≥ 5.16, < 6.1.62 | ≥ 6.2, < 6.5.11 | ≥ 6.6, < 6.6.1
Debian1 product
  • linux< 6.1.64-1 | < 6.6.8-1

3 vendors · 107 products

References

9 links