Critical severity · published May 6, 2026
CVE-2026-43208
net: do not pass flow_id to set_rps_cpu()
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
net: do not pass flow_id to set_rps_cpu()
Blamed commit made the assumption that the RPS table for each receive
queue would have the same size, and that it would not change.
Compute flow_id in set_rps_cpu(), do not assume we can use the value
computed by get_rps_cpu(). Otherwise we risk out-of-bound access
and/or crashes.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
6.18 before 6.18.16; 6.19 before 6.19.6; 7.0 · source: NVD
LI
Linux · Linux
48aa30443e52c9666d5cd5e67532e475f212337e before 5455a232edea6b946b99449f15ca771a8874a5a6; 48aa30443e52c9666d5cd5e67532e475f212337e before ed712dc0d64dee5f0d05e4d8ca57711f8a9c850c; 48aa30443e52c9666d5cd5e67532e475f212337e before 8a8a9fac9efa6423fd74938b940cb7d731780718; 6.18 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43208
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-43208
Patch
https://git.kernel.org/stable/c/5455a232edea6b946b99449f15ca771a8874a5a6
Patch
https://git.kernel.org/stable/c/8a8a9fac9efa6423fd74938b940cb7d731780718
Patch
https://git.kernel.org/stable/c/ed712dc0d64dee5f0d05e4d8ca57711f8a9c850c
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