tomoyo: don't emit warning in tomoyo_write_control() (Linux Linux)

CVE-2024-58085
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.21 % · percentile 12 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: tomoyo: don't emit warning in tomoyo_write_control() syzbot is reporting too large allocation warning at tomoyo_write_control(), for one can write a very very long line without new line character. To fix this warning, I use __GFP_NOWARN rather than checking for KMALLOC_MAX_SIZE, for practically a valid line should be always shorter than 32KB where the "too small to fail" memory-allocation rule applies. One might try to write a valid line that is longer than 32KB, but such request will likely fail with -ENOMEM. Therefore, I feel that separately returning -EINVAL when a line is longer than KMALLOC_MAX_SIZE is redundant. There is no need to distinguish over-32KB and over-KMALLOC_MAX_SIZE.

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected bd03a3e4c9a9df0c6b007045fa7fc8889111a478 < c67efabddc73171c7771d3ffe4ffa1e503ee533e ; affected bd03a3e4c9a9df0c6b007045fa7fc8889111a478 < f6b37b3e12de638753bce79a2858070b9c4a4ad3 ; affected bd03a3e4c9a9df0c6b007045fa7fc8889111a478 < b2bd5857a0d6973ebbcb4d9831ddcaebbd257be1 ; affected bd03a3e4c9a9df0c6b007045fa7fc8889111a478 < a01c200fa7eb59da4d2dbbb48b61f4a0d196c09f ; affected bd03a3e4c9a9df0c6b007045fa7fc8889111a478 < fe1c021eb03dae0dc9dce55e81f77a60e419a27a ; affected bd03a3e4c9a9df0c6b007045fa7fc8889111a478 < c9382f380e8d09209b8e5c0def0545852168be25
Linux · Linuxaffected 3.1 ; unaffected 0 < 3.1 ; unaffected 5.4.291 ≤ 5.4.* ; unaffected 5.10.235 ≤ 5.10.* ; unaffected 5.15.179 ≤ 5.15.* ; unaffected 6.1.129 ≤ 6.1.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD