5.5

CVE-2026-43032: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-43032DEBIAN-CVE-2026-43032
Published 01-05-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2026-43032 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.1% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 41 · Related 39
MGASA-2026-0108MGASA-2026-0110OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: NFC: pn533: bound the UART receive buffer pn532_receive_buf() appends every incoming byte to dev->recv_skb and only resets the buffer after pn532_uart_rx_is_frame() recognizes a complete frame. A continuous stream of bytes without a valid PN532 frame header therefore keeps growing the skb until skb_put_u8() hits the tail limit. Drop the accumulated partial frame once the fixed receive buffer is full so malformed UART traffic cannot grow the skb past PN532_UART_SKB_BUFF_LEN.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.04 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu145 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 8bedf1dd5640ac8997bff00bbefe241b438df397 | ≥ c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 23e925183db26cd322597679669ad29d70ed2ada | ≥ c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 3adca9be14bf36b927193f05f5aea35a1a90e913 | ≥ c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 2c1fadd221b21d8038acfe6a0f56291881d5ff76 | ≥ c656aa4c27b17a8c70da223ed5ab42145800d6b5, < f48ab6ee654ecc350434e4566bc785773f412b7e | ≥ c656aa4c27b17a8c70da223ed5ab42145800d6b5, < ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8 | ≥ c656aa4c27b17a8c70da223ed5ab42145800d6b5, < cf2ff10183204349edfd6b972e189375fc5f1fb0 | ≥ c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 30fe3f5f6494f827d812ff179f295a8e532709d6 | 5.5
  • linux_kernel≥ 5.5, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.168 | ≥ 6.2, < 6.6.134 | ≥ 6.7, < 6.12.81 | ≥ 6.13, < 6.18.22 | ≥ 6.19, < 6.19.12 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.12-1

3 vendors · 148 products

References

39 links
Show all 39 references