CVE-2024-47703: linux
Vulnerability summary
CVE-2024-47703 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.3% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 24 · Related 25Timeline
- 21-10-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: bpf, lsm: Add check for BPF LSM return value A bpf prog returning a positive number attached to file_alloc_security hook makes kernel panic. This happens because file system can not filter out the positive number returned by the LSM prog using IS_ERR, and misinterprets this positive number as a file pointer. Given that hook file_alloc_security never returned positive number before the introduction of BPF LSM, and other BPF LSM hooks may encounter similar issues, this patch adds LSM return value check in verifier, to ensure no unexpected value is returned.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
11%
Versus all other CVEs
30-day change
0.00 pp
From 0.22% 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 causeNo weakness data has been published for this record.
Affected systems
Ubuntu123 products
- linuxAll versions (No fix recorded) | < 6.8.0-54.56
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 6.8.0-1023.25
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 520b7aa00d8cd8e411ecc09f63a2acd90feb6d29, < 1050727d83e70449991c29dd1cf29fe936a63da3 | ≥ 520b7aa00d8cd8e411ecc09f63a2acd90feb6d29, < 27ca3e20fe80be85a92b10064dfeb56cb2564b1c | ≥ 520b7aa00d8cd8e411ecc09f63a2acd90feb6d29, < 5d99e198be279045e6ecefe220f5c52f8ce9bfd5 | 5.7
- linux_kernel≥ 5.7, < 6.10.13 | ≥ 6.11, < 6.11.2
Debian1 product
- linuxAll versions (No fix recorded) | < 6.11.2-1
3 vendors · 126 products
