CVE-2024-26632: block: Fix iterating over an empty bio with bio_for_each_folio_all
Vulnerability summary
CVE-2024-26632 is a high (CVSS 7.8) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.9% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 14Timeline
- 18-03-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: block: Fix iterating over an empty bio with bio_for_each_folio_all If the bio contains no data, bio_first_folio() calls page_folio() on a NULL pointer and oopses. Move the test that we've reached the end of the bio from bio_next_folio() to bio_first_folio(). [axboe: add unlikely() to error case]
CVSS metrics
4 scores · 4 sources · 1 version- 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
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% 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.
Ubuntu75 products
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
- linux-aws-5.19All versions (No fix recorded)
Linux2 products
- linux≥ 640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662, < c6350b5cb78e9024c49eaee6fdb914ad2903a5fe | ≥ 640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662, < a6bd8182137a12d22d3f2cee463271bdcb491659 | ≥ 640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662, < ca3ede3f5893e2d26d4dbdef1eec28a8487fafde | ≥ 640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662, < 7bed6f3d08b7af27b7015da8dc3acf2b9c1f21d7 | 5.17
- linux_kernel≥ 5.17, < 6.1.75 | ≥ 6.2, < 6.6.14 | ≥ 6.7, < 6.7.2
Debian1 product
- linux< 6.1.76-1 | < 6.6.15-1
3 vendors · 78 products
