CVE-2023-52809: scsi: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup()
Vulnerability summary
CVE-2023-52809 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.2% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 18 · Related 14Timeline
- 21-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup() fc_lport_ptp_setup() did not check the return value of fc_rport_create() which can return NULL and would cause a NULL pointer dereference. Address this issue by checking return value of fc_rport_create() and log error message on fc_rport_create() failed.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.25%
Chance of exploitation in the next 30 days
Percentile
16%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.25% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu116 products
- linuxAll versions (No fix recorded) | < 4.4.0-259.293 | < 4.15.0-229.241 | < 5.4.0-173.191 | < 5.15.0-100.110
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 4.4.0-1136.142 | < 4.4.0-1174.189 | < 4.15.0-1173.186 | < 5.4.0-1120.130 | < 5.15.0-1056.61
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a, < 930f0aaba4820d6362de4e6ed569eaf444f1ea4e | ≥ 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a, < 77072ec41d6ab3718c3fc639bc149b8037caedfa | ≥ 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a, < b549acf999824d4f751ca57965700372f2f3ad00 | ≥ 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a, < bb83f79f90e92f46466adcfd4fd264a7ae0f0f01 | ≥ 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a, < 56d78b5495ebecbb9395101f3be177cd0a52450b | ≥ 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a, < 442fd24d7b6b29e4a9cd9225afba4142d5f522ba | ≥ 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a, < f6fe7261b92b21109678747f36df9fdab1e30c34 | ≥ 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a, < 6b9ecf4e1032e645873933e5b43cbb84cac19106 | ≥ 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a, < 4df105f0ce9f6f30cda4e99f577150d23f0c9c5f | 2.6.29
- linux_kernel< 4.14.331 | ≥ 4.15, < 4.19.300 | ≥ 4.20, < 5.4.262 | ≥ 5.5, < 5.10.202 | ≥ 5.11, < 5.15.140 | ≥ 5.16, < 6.1.64 | ≥ 6.2, < 6.5.13 | ≥ 6.6, < 6.6.3
Debian1 product
- linux< 6.1.64-1 | < 6.6.8-1
3 vendors · 119 products
