Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix bpf_sk_select_reuseport() memory leak
As pointed out in the original comment, lookup in sockmap can return a TCP
ESTABLISHED socket. Such TCP socket may have had SO_ATTACH_REUSEPORT_EBPF
set before it was ESTABLISHED. In other words, a non-NULL sk_reuseport_cb
does not imply a non-refcounted socket.
Drop sk's reference in both error paths.
unreferenced object 0xffff888101911800 (size 2048):
comm "test_progs", pid 44109, jiffies 4297131437
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
80 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc 9336483b):
__kmalloc_noprof+0x3bf/0x560
__reuseport_alloc+0x1d/0x40
reuseport_alloc+0xca/0x150
reuseport_attach_prog+0x87/0x140
sk_reuseport_attach_bpf+0xc8/0x100
sk_setsockopt+0x1181/0x1990
do_sock_setsockopt+0x12b/0x160
__sys_setsockopt+0x7b/0xc0
__x64_sys_setsockopt+0x1b/0x30
do_syscall_64+0x93/0x180
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.8 | 5.10.234 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 6.12.11-1 | — |
| Debian 13 | linux | 6.12.11-1 | — |
| Debian 12 | linux | 6.1.128-1 | DSA-5860-1 |
| Debian 11 | linux | 5.10.234-1 | DLA-4075-1 |
| Debian 11 | linux-6.1 | 6.1.128-1~deb11u1 | DLA-4076-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1062.64 | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-62.65 | USN-7595-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1030.32 | USN-7595-1 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1030.35 | USN-7596-1 |
| Ubuntu 24.04 LTS | linux-azure-nvidia | 6.8.0-1018.19 | USN-7596-2 |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1031.33 | USN-7595-5 |
| Ubuntu 24.04 LTS | linux-gcp-6.11 +1 | 6.11.0-1013.13~24.04.1 | USN-7448-1 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1026.30 | USN-7595-1 |
| Ubuntu 24.04 LTS | linux-gkeop | 6.8.0-1013.15 | USN-7595-1 |
| Ubuntu 24.04 LTS | linux-hwe-6.11 | 6.11.0-24.24~24.04.1 | USN-7445-1 |
| Ubuntu 24.04 LTS | linux-ibm | 6.8.0-1027.27 | USN-7595-1 |
| Ubuntu 24.04 LTS | linux-lowlatency | 6.8.0-62.65.1 | USN-7595-1 |
| Ubuntu 24.04 LTS | linux-lowlatency-hwe-6.11 | 6.11.0-1012.13~24.04.1 | USN-7445-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1029.32 | USN-7595-1 |
| Ubuntu 24.04 LTS | linux-nvidia-6.11 | 6.11.0-1007.7 | — |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1029.32.1 | USN-7595-1 |
| Ubuntu 24.04 LTS | linux-nvidia-tegra | 6.8.0-1008.8 | — |
| Ubuntu 24.04 LTS | linux-oem-6.11 | 6.11.0-1020.20 | USN-7445-1 |
| Ubuntu 24.04 LTS | linux-oem-6.8 | 6.8.0-1029.29 | USN-7595-1 |
| Ubuntu 24.04 LTS | linux-oracle | 6.8.0-1027.28 | USN-7595-4 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1029.33 | USN-7595-4 |
| Ubuntu 24.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 24.04 LTS | linux-xilinx | 6.8.0-1017.18 | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-135.146 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1080.87 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1030.32~22.04.1 | USN-7595-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1084.93 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1030.35~22.04.1 | USN-7596-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1084.93.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1079.88 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | 6.8.0-1031.33~22.04.1 | USN-7595-5 |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1077.83 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1062.70 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | 6.8.0-64.67~22.04.1 | USN-7653-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1072.75 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-ibm-6.8 | 6.8.0-1027.27~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1073.75 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1075.81 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1076.81 | USN-7388-1 |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.8 | 6.8.0-62.65.1~22.04.1 | USN-7595-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1074.75 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1029.32~22.04.1 | USN-7595-1 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1033.33 | USN-7389-1 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1021.21 | USN-7389-1 |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1027.28~22.04.1 | USN-7595-4 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1074.77 | USN-7387-1 |
| Ubuntu 22.04 LTS | linux-riscv +31 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.8 | 6.8.0-62.65~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1044.48 | USN-7390-1 |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1080.87~20.04.1 | USN-7388-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1086.95~20.04.1 | USN-7421-1 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1086.95~20.04.1.1 | USN-7421-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1081.90~20.04.1 | USN-7459-2 |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 | 5.15.0-136.147~20.04.1 | USN-7407-1 |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1074.77~20.04.1 | USN-7458-1 |
| Ubuntu 20.04 LTS | linux-lowlatency-hwe-5.15 | 5.15.0-135.146~20.04.1 | USN-7387-1 |
| Ubuntu 20.04 LTS | linux-oracle-5.15 +1 | 5.15.0-1077.83~20.04.1 | USN-7459-1, USN-7387-1 |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1075.79~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2024.25 | USN-7595-3 |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1023.24 | USN-7595-2 |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1073.75 | USN-7387-3 |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1080.88 | USN-7387-3 |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | 6.8.1-1023.24~22.04.1 | — |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips | 6.8.0-78.78+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1080.87+fips1 | USN-7387-2 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1083.92+fips1 | USN-7387-2 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-135.146+fips1 | USN-7387-2 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1079.88+fips1 | USN-7387-2 |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1039.39~20.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | kernel-64kb +6 | 6.4.0-150700.53.3.1 | SUSE-SU-2025:01951-1 |
| SLES 15 SP7 | kernel-azure +2 | 6.4.0-150700.20.3.1 | SUSE-SU-2025:01967-1 |
| SLES 15 SP7 | kernel-default-base | 6.4.0-150700.53.3.1.150700.17.2.1 | SUSE-SU-2025:01951-1 |
| SLES 15 SP6 | kernel-64kb +6 | 6.4.0-150600.23.50.1 | SUSE-SU-2025:01614-1 |
| SLES 15 SP6 | kernel-azure +2 | 6.4.0-150600.8.37.1 | SUSE-SU-2025:01707-1 |
| SLES 15 SP6 | kernel-coco +3 | 6.4.0-15061.21.coco15sp6.1 | SUSE-SU-2025:01919-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.50.1.150600.12.22.1 | SUSE-SU-2025:01614-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.1 | kernel-default-base | 6.4.0-29.1.21.7 | SUSE-SU-2025:20354-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_7 +1 | 1-1.2 | SUSE-SU-2025:20355-1, SUSE-SU-2025:20354-1 |
| SLE Micro 6.1 | kernel-rt +1 | 6.4.0-31.1 | SUSE-SU-2025:20355-1 |
| SLE Micro 6.1 | kernel-source +2 | 6.4.0-29.1 | SUSE-SU-2025:20354-1 |
| SLE Micro 6.0 | kernel-default-base | 6.4.0-29.1.21.7 | SUSE-SU-2025:20343-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_7 +1 | 1-1.2 | SUSE-SU-2025:20344-1, SUSE-SU-2025:20343-1 |
| SLE Micro 6.0 | kernel-rt +1 | 6.4.0-31.1 | SUSE-SU-2025:20344-1 |
| SLE Micro 6.0 | kernel-source +2 | 6.4.0-29.1 | SUSE-SU-2025:20343-1 |
| SLE Live Patching 15 SP7 | kernel-default | 6.4.0-150700.53.3.1 | SUSE-SU-2025:01951-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7-RT_Update_1 | 1-150700.1.3.1 | SUSE-SU-2025:01972-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_1 | 1-150700.15.3.1 | SUSE-SU-2025:01951-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.50.1 | SUSE-SU-2025:01614-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_11 | 1-150600.1.3.2 | SUSE-SU-2025:01964-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_11 | 1-150600.13.3.1 | SUSE-SU-2025:01614-1 |
| SUSE Real Time Module 15 SP7 | kernel-rt +3 | 6.4.0-150700.7.3.1 | SUSE-SU-2025:01972-1 |
| SUSE Real Time Module 15 SP6 | kernel-rt +3 | 6.4.0-150600.10.39.1 | SUSE-SU-2025:01964-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | dtb-aarch64 +10 | 6.4.0-150600.23.50.1 | SUSE-SU-2025:01614-1 |
| openSUSE Leap 15.6 | kernel-azure +2 | 6.4.0-150600.8.37.1 | SUSE-SU-2025:01707-1 |
| openSUSE Leap 15.6 | kernel-default-base | 6.4.0-150600.23.50.1.150600.12.22.1 | SUSE-SU-2025:01614-1 |
| openSUSE Leap 15.6 | kernel-rt +3 | 6.4.0-150600.10.39.1 | SUSE-SU-2025:01964-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.127-135.201 | 1.0-0.amzn2023 | ALAS2023-2025-823 |
| Amazon Linux 2023 | perf +14 | 6.1.127-135.201.amzn2023 | ALAS2023-2025-823 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kernel | 6.6.76.1-1 | — |
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.180.1-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | kernel-uek +34 | 6.12.0-101.33.4.3.el10uek | ELSA-2025-20530, ELSA-2025-20480 |
Advisories 41
- USN-7653-1 linux-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7595-1 linux, linux-aws, linux-aws-6.8, linux-gke, linux-gkeop, linux-ibm, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oem-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7595-4 linux-oracle, linux-oracle-6.8, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7595-3 linux-raspi-realtime vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7459-1 linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7445-1 linux, linux-aws, linux-gcp, linux-hwe-6.11, linux-lowlatency, linux-lowlatency-hwe-6.11, linux-oem-6.11, linux-oracle, linux-raspi, linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7459-2 linux-gcp-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7448-1 linux-azure, linux-azure-6.11 vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7595-5 linux-gcp, linux-gcp-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7595-2 linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7387-1 linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-gkeop, linux-ibm, linux-intel-iotg, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7387-2 linux-fips, linux-aws-fips, linux-azure-fips, linux-gcp-fips vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7596-2 linux-azure-nvidia vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7458-1 linux-ibm-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7596-1 linux-azure, linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7387-3 linux-realtime, linux-intel-iot-realtime vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7388-1 linux-aws-5.15, linux-kvm vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7421-1 linux-azure-5.15, linux-azure-fde-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7389-1 linux-nvidia-tegra, linux-nvidia-tegra-igx vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7390-1 linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7407-1 linux-hwe-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- SSA-265688 SSA-265688: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP V1.1 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2025-0232 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Sep 3, 2026
- ICSA-24-102-01 Siemens SIMATIC S7-1500 TM MFP CISA ICS & IT advisories · May 14, 2026
- SUSE-SU-2025:20343-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20344-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20354-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20355-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01972-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01614-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- DSA-5860-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4075-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4076-1 linux-6.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2025:01967-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:01919-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:01951-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:01964-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:01707-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2025-20530 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 18, 2025
- ELSA-2025-20480 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 17, 2025
- ALAS2023-2025-823 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Mar 10, 2025
References
- https://git.kernel.org/stable/c/bb36838dac7bb334a3f3d7eb29875593ec9473fc
- https://git.kernel.org/stable/c/0ab52a8ca6e156a64c51b5e7456cac9a0ebfd9bf
- https://git.kernel.org/stable/c/d0a3b3d1176d39218b8edb2a2d03164942ab9ccd
- https://git.kernel.org/stable/c/b02e70be498b138e9c21701c2f33f4018ca7cd5e
- https://git.kernel.org/stable/c/cccd51dd22574216e64e5d205489e634f86999f3
- https://git.kernel.org/stable/c/b3af60928ab9129befa65e6df0310d27300942bf