CVE-2026-64507
- Source
- https://cve.org/CVERecord?id=CVE-2026-64507
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64507.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-64507
- Downstream
- Published
- 2026-07-25T08:52:01.008Z
- Modified
- 2026-07-28T04:03:08.650191420Z
- Summary
- x86/bugs: Enable IBPB flush on BPF JIT allocation
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
x86/bugs: Enable IBPB flush on BPF JIT allocation
Enable hardening against JIT spraying when Spectre-v2 mitigations are in use. Specifically, issue an IBPB flush on BPF JIT memory reuse. Skip enabling the IBPB flush if the BPF dispatcher is already using a retpoline sequence.
This hardening applies only when BPF-JIT is in use. Guard the enabling under CONFIGBPFJIT so that bugs.c still builds with CONFIGBPFJIT=n.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64507.json" }- References
-
- https://git.kernel.org/stable/c/52440e15d9628f8f239373c0f2e5e8f92feea2df
- https://git.kernel.org/stable/c/8a4c8af9ae67eb072d90d1b339f14d27a82bd2a1
- https://git.kernel.org/stable/c/9354248fc1c33a844ca1872761f6668b393e8c37
- https://git.kernel.org/stable/c/a3af84b0fa00ead01fcd0e28b5d773ff25990a0d
- https://git.kernel.org/stable/c/cb27f3bf915cc0f20fc0c48da9059304e39ebd35
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64507.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-64507
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced57631054fae6dcc9c892ae6310b58bbb6f6e5048Fixedcb27f3bf915cc0f20fc0c48da9059304e39ebd35Fixed9354248fc1c33a844ca1872761f6668b393e8c37Fixed8a4c8af9ae67eb072d90d1b339f14d27a82bd2a1Fixed52440e15d9628f8f239373c0f2e5e8f92feea2dfFixeda3af84b0fa00ead01fcd0e28b5d773ff25990a0d