CVE-2026-53110s390/bpf: Zero-extend bpf prog return values and kfunc arguments
Updated under an hour ago ()
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In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Zero-extend bpf prog return values and kfunc arguments s390x ABI requires callers to zero-extend unsigned arguments and sign-extend signed arguments, and callees to zero-extend unsigned return values and sign-extend signed return values. s390 BPF JIT currently implements only sign extension. Fix this omission and implement zero extension too.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 528eb2cb87bc1353235a6384696b4849bde8b0ba before edc90a12073b9a530064a99945c183dde120cb99; 528eb2cb87bc1353235a6384696b4849bde8b0ba builds before 44c4f999b03f55debb1a0c5ab5c1796895a1adf8; 528eb2cb87bc1353235a6384696b4849bde8b0ba builds before 366b0e05ee24f5ba62bdc7ec1346038258b9a797; from 528eb2cb87bc1353235a6384696b4849bde8b0ba before 834918a77be51419383bf1dda9f02b81ecf26b34; 528eb2cb87bc1353235a6384696b4849bde8b0ba builds before 202e42e4aa890172366354b233c42c73107a3f59 | CNA record |
linux linux_kernel linux:linux_kernel | from 6.3 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10 | NVD |
References
- https://git.kernel.org/stable/c/edc90a12073b9a530064a99945c183dde120cb99patch
- https://git.kernel.org/stable/c/44c4f999b03f55debb1a0c5ab5c1796895a1adf8patch
- https://git.kernel.org/stable/c/366b0e05ee24f5ba62bdc7ec1346038258b9a797patch
- https://git.kernel.org/stable/c/834918a77be51419383bf1dda9f02b81ecf26b34patch
- https://git.kernel.org/stable/c/202e42e4aa890172366354b233c42c73107a3f59patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.