CVE-2026-53032
bpf: Fix NULL deref in map_kptr_match_type for scalar regs
CVE-2026-53032 is fixed in 52 products on 1 platform, first by ALAS2023-2026-1894, released June 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0012
1st percentile
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL deref in map_kptr_match_type for scalar regs Commit ab6c637ad027 ("bpf: Fix a bpf_kptr_xchg() issue with local kptr") refactored map_kptr_match_type() to branch on btf_is_kernel() before checking base_type(). A scalar register stored into a kptr slot has no btf, so the btf_is_kernel(reg->btf) call dereferences NULL. Move the base_type() != PTR_TO_BTF_ID guard before any reg->btf access.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.12 · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| bpftool6.12-debuginfo · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| bpftool6.18 · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| dtb-aarch64 · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-64kb · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-64kb · sles 15.7 | 6.4.0-150700.53.78.1 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-64kb · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-azure · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-azure · sles 15.7 | 6.4.0-150700.53.78.1 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-azure · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-default · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-default · sles 15.7 | 6.4.0-150700.53.78.1 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-default · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23237-1 | Aug 11, 2026 |
| kernel-default-base · opensuse-leap 16.0 | 6.12.0-160000.37.1.160000.2.19 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-default-base · sles 15.7 | 6.4.0-150700.53.78.1.150700.17.43.2 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-default-base · sles 16.0 | 6.12.0-160000.37.1.160000.2.19 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-docs · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-docs · sles 15.7 | 6.4.0-150700.53.78.1 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-docs · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-kvmsmall · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-kvmsmall · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-livepatch-6.12.92-122.166 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel-livepatch-6.18.33-63.124 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel-livepatch-SLE15-SP7-RT_Update_19 · sles 15.7 | 1-150700.1.5.1 | SUSE-SU-2026:3810-1 | Aug 26, 2026 |
| kernel-livepatch-SLE15-SP7_Update_20 · sles 15.7 | 1-150700.15.3.2 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-obs-build · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-obs-build · sles 15.7 | 6.4.0-150700.53.78.1 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-obs-qa · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-obs-qa · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-rt · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-source · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-source · sles 15.7 | 6.4.0-150700.53.78.1 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-source · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-syms · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-syms · sles 15.7 | 6.4.0-150700.53.78.1 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-syms · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-zfcpdump · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-zfcpdump · sles 15.7 | 6.4.0-150700.53.78.1 | SUSE-SU-2026:3790-1 | Aug 25, 2026 |
| kernel-zfcpdump · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel6.12 · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-debuginfo · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-debuginfo-common-aarch64 · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-debuginfo-common-x86_64 · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-devel · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-headers · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-modules-extra · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-modules-extra-common · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-tools · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-tools-debuginfo · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.12-tools-devel · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.94-1 | DEBIAN-CVE-2026-53032 | Jun 25, 2026 |
| linux · Debian 14 | 7.0.10-1 | DEBIAN-CVE-2026-53032 | Jun 25, 2026 |
| perf6.12 · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| perf6.12-debuginfo · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| python3-perf6.12 · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| python3-perf6.12-debuginfo · amzn 2023 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 | Jun 22, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.33-63.124.amzn2023 | ALAS2023-2026-1866 | Jun 22, 2026 |
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