CVE-2025-39848
ax25: properly unshare skbs in ax25_kiss_rcv()
CVE-2025-39848 is fixed in 46 products on 1 platform, first by DEBIAN-CVE-2025-39848, released September 19, 2025. 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
0.0024
15th percentile
In the Linux kernel, the following vulnerability has been resolved: ax25: properly unshare skbs in ax25_kiss_rcv() Bernard Pidoux reported a regression apparently caused by commit c353e8983e0d ("net: introduce per netns packet chains"). skb->dev becomes NULL and we crash in __netif_receive_skb_core(). Before above commit, different kind of bugs or corruptions could happen without a major crash. But the root cause is that ax25_kiss_rcv() can queue/mangle input skb without checking if this skb is shared or not. Many thanks to Bernard Pidoux for his help, diagnosis and tests. We had a similar issue years ago fixed with commit 7aaed57c5c28 ("phonet: properly unshare skbs in phonet_rcv()").
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| bpftool-debuginfo · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| dtb-aarch64 · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| dtb-aarch64 · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-64kb · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-64kb · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-64kb · sles 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-64kb · sles 15.7 | 6.4.0-150700.53.22.1 | SUSE-SU-2025:4057-1 | Nov 11, 2025 |
| kernel-64kb · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-azure · opensuse-leap 15.6 | 6.4.0-150600.8.52.1 | SUSE-SU-2025:03634-1 | Oct 17, 2025 |
| kernel-azure · sles 15.6 | 6.4.0-150600.8.52.1 | SUSE-SU-2025:03634-1 | Oct 17, 2025 |
| kernel-azure · sles 15.7 | 6.4.0-150700.20.18.1 | SUSE-SU-2025:4132-1 | Nov 18, 2025 |
| kernel-debug · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-debuginfo · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-debuginfo-common-aarch64 · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-debuginfo-common-x86_64 · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-default · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-default · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-default · sles 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-default · sles 15.7 | 6.4.0-150700.53.22.1 | SUSE-SU-2025:4057-1 | Nov 11, 2025 |
| kernel-default · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-default-base · opensuse-leap 15.6 | 6.4.0-150600.23.73.1.150600.12.32.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-default-base · opensuse-leap 16.0 | 6.12.0-160000.6.1.160000.2.4 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-default-base · sles 15.6 | 6.4.0-150600.23.73.1.150600.12.32.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-default-base · sles 15.7 | 6.4.0-150700.53.22.1.150700.17.15.1 | SUSE-SU-2025:4057-1 | Nov 11, 2025 |
| kernel-default-base · sles 16.0 | 6.12.0-160000.6.1.160000.2.4 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-devel · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-docs · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-docs · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-docs · sles 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-docs · sles 15.7 | 6.4.0-150700.53.22.1 | SUSE-SU-2025:4057-1 | Nov 11, 2025 |
| kernel-docs · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-headers · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-kvmsmall · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-kvmsmall · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-kvmsmall · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-libbpf · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-libbpf-debuginfo · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-libbpf-devel · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-libbpf-static · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-livepatch-6.1.153-175.280 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-livepatch-SLE15-SP6-RT_Update_16 · sles 15.6 | 1-150600.1.3.1 | SUSE-SU-2025:3751-1 | Oct 23, 2025 |
| kernel-livepatch-SLE15-SP6_Update_16 · sles 15.6 | 1-150600.13.3.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-livepatch-SLE15-SP7-RT_Update_6 · sles 15.7 | 1-150700.1.3.1 | SUSE-SU-2025:4141-1 | Nov 19, 2025 |
| kernel-livepatch-SLE15-SP7_Update_6 · sles 15.7 | 1-150700.15.3.1 | SUSE-SU-2025:4057-1 | Nov 11, 2025 |
| kernel-modules-extra · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-modules-extra-common · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-obs-build · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-obs-build · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-obs-build · sles 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-obs-build · sles 15.7 | 6.4.0-150700.53.22.1 | SUSE-SU-2025:4057-1 | Nov 11, 2025 |
| kernel-obs-qa · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-obs-qa · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-obs-qa · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-rt · opensuse-leap 15.6 | 6.4.0-150600.10.55.1 | SUSE-SU-2025:3751-1 | Oct 23, 2025 |
| kernel-rt · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-rt_debug · opensuse-leap 15.6 | 6.4.0-150600.10.55.1 | SUSE-SU-2025:3751-1 | Oct 23, 2025 |
| kernel-source · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-source · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-source · sles 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-source · sles 15.7 | 6.4.0-150700.53.22.1 | SUSE-SU-2025:4057-1 | Nov 11, 2025 |
| kernel-source · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-source-azure · opensuse-leap 15.6 | 6.4.0-150600.8.52.1 | SUSE-SU-2025:03634-1 | Oct 17, 2025 |
| kernel-source-azure · sles 15.6 | 6.4.0-150600.8.52.1 | SUSE-SU-2025:03634-1 | Oct 17, 2025 |
| kernel-source-azure · sles 15.7 | 6.4.0-150700.20.18.1 | SUSE-SU-2025:4132-1 | Nov 18, 2025 |
| kernel-source-rt · opensuse-leap 15.6 | 6.4.0-150600.10.55.1 | SUSE-SU-2025:3751-1 | Oct 23, 2025 |
| kernel-syms · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-syms · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-syms · sles 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-syms · sles 15.7 | 6.4.0-150700.53.22.1 | SUSE-SU-2025:4057-1 | Nov 11, 2025 |
| kernel-syms · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-syms-azure · opensuse-leap 15.6 | 6.4.0-150600.8.52.1 | SUSE-SU-2025:03634-1 | Oct 17, 2025 |
| kernel-syms-azure · sles 15.6 | 6.4.0-150600.8.52.1 | SUSE-SU-2025:03634-1 | Oct 17, 2025 |
| kernel-syms-azure · sles 15.7 | 6.4.0-150700.20.18.1 | SUSE-SU-2025:4132-1 | Nov 18, 2025 |
| kernel-syms-rt · opensuse-leap 15.6 | 6.4.0-150600.10.55.1 | SUSE-SU-2025:3751-1 | Oct 23, 2025 |
| kernel-tools · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-tools-debuginfo · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-tools-devel · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| kernel-zfcpdump · opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-zfcpdump · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-zfcpdump · sles 15.6 | 6.4.0-150600.23.73.1 | SUSE-SU-2025:03600-1 | Oct 15, 2025 |
| kernel-zfcpdump · sles 15.7 | 6.4.0-150700.53.22.1 | SUSE-SU-2025:4057-1 | Nov 11, 2025 |
| kernel-zfcpdump · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| linux · Debian 12.15 (bookworm) | 6.1.153-1 | DEBIAN-CVE-2025-39848 | Sep 19, 2025 |
| linux · Debian 13.5 (trixie) | 6.12.48-1 | DEBIAN-CVE-2025-39848 | Sep 19, 2025 |
| linux · Debian 14 | 6.16.6-1 | DEBIAN-CVE-2025-39848 | Sep 19, 2025 |
| perf · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| perf-debuginfo · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| python3-perf · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
| python3-perf-debuginfo · amzn 2023 | 1:6.1.153-175.280.amzn2023 | ALAS2023-2025-1210 | Sep 24, 2025 |
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