net: prestera: validate firmware header length
Published Aug 22, 2026
5.5
MEDIUMCVSS 3.1
EPSS 0.22%
Description
prestera_fw_hdr_parse() reads the firmware header before checking that the firmware image contains that header.
Reject images shorter than struct prestera_fw_header before decoding the magic and version fields.
Affected products
-
Affected
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
-
Affected
- 5.10
Unaffected
- ≥ 0, < 5.10
- ≥ 5.10.265, ≤ 5.10.*
- ≥ 5.15.216, ≤ 5.15.*
- ≥ 6.1.183, ≤ 6.1.*
- ≥ 6.12.104, ≤ 6.12.*
- ≥ 6.18.45, ≤ 6.18.*
- ≥ 6.6.152, ≤ 6.6.*
- ≥ 7.1.9, ≤ 7.1.*
- 7.2
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Linux | Linux | unaffected | Affected
|
| Linux | Linux | affected | Affected
Unaffected
|
No data.
No data.
Red Hat Enterprise Linux 10
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (14)
- https://access.redhat.com/security/cve/CVE-2026-74693 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2521407 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-64380 Advisory
- https://git.kernel.org/stable/c/0fbcceb9d19f2d1dcdf099aee590f2517cb718bb
- https://git.kernel.org/stable/c/363e048a9d0a6c245cbc348c8a220170afed046a
- https://git.kernel.org/stable/c/38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240
- https://git.kernel.org/stable/c/470ac9cce7308e60cf2dceb448749cdd006e73de
- https://git.kernel.org/stable/c/6fad06bb793d7089ae05b9fcf46e11be2dfe4850
- https://git.kernel.org/stable/c/7fa8a12296d8d5aa4b1c3904f0b354d81124cf29
- https://git.kernel.org/stable/c/8ae344eb540af3f457179b52bc6061416752485c
- https://git.kernel.org/stable/c/e0f382e8084117f0b11ffb070fe1079e38c0d7f9
- https://lore.kernel.org/linux-cve-announce/2026082234-CVE-2026-74693-ba3f@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-74693
- https://www.cve.org/CVERecord?id=CVE-2026-74693
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
No data
GitHub
No data