CVE-2023-52462: linux NULL Pointer Dereference
Vulnerability summary
CVE-2023-52462 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 14 · Related 15Timeline
- 23-02-2024PublishedVulnerability first disclosed.
- 23-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slot_type[BPF_REG_SIZE - 1] (plus potentially few more below it, depending on actual spill size). So to check if some stack slot has spilled register we need to consult slot_type[7], not slot_type[0]. To avoid the need to remember and double-check this in the future, just use is_spilled_reg() helper.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
0.00 pp
From 0.23% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu104 products
- linux< 5.15.0-102.112
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1057.63
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ cdd73a5ed0840da88a3b9ad353f568e6f156d417, < 2757f17972d87773b3677777f5682510f13c66ef | ≥ 07c286c10a9cedbd71f20269ff3a4e73d9aab2fe, < 67e6707f07354ed1acb4e65552e97c60cf9d69cf | ≥ 27113c59b6d0a587b29ae72d4ff3f832f58b0651, < fc3e3c50a0a4cac1463967c110686189e4a59104 | ≥ 27113c59b6d0a587b29ae72d4ff3f832f58b0651, < 8dc15b0670594543c356567a1a45b0182ec63174 | ≥ 27113c59b6d0a587b29ae72d4ff3f832f58b0651, < 40617d45ea05535105e202a8a819e388a2b1f036 | ≥ 27113c59b6d0a587b29ae72d4ff3f832f58b0651, < ab125ed3ec1c10ccc36bc98c7a4256ad114a3dae | ≥ 5.10.163, < 5.10.209 | ≥ 5.15.86, < 5.15.148 | 5.16
- linux_kernel< 5.10.209 | ≥ 5.11.0, < 5.15.148 | ≥ 5.16.0, < 6.1.75 | ≥ 6.2.0, < 6.6.14 | ≥ 6.7.0, < 6.7.2
Debian1 product
- linux< 6.1.76-1 | < 6.6.15-1
3 vendors · 107 products
