Description
In the Linux kernel, the following vulnerability has been resolved:
NFSD: Fix ia_size underflow
iattr::ia_size is a loff_t, which is a signed 64-bit type. NFSv3 and
NFSv4 both define file size as an unsigned 64-bit type. Thus there
is a range of valid file size values an NFS client can send that is
already larger than Linux can handle.
Currently decode_fattr4() dumps a full u64 value into ia_size. If
that value happens to be larger than S64_MAX, then ia_size
underflows. I'm about to fix up the NFSv3 behavior as well, so let's
catch the underflow in the common code path: nfsd_setattr().
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 2.6.12 | 5.4.295 |
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 | 5.16.10-1 | — |
| Debian 13 | linux | 5.16.10-1 | — |
| Debian 12 | linux | 5.16.10-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +25 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +27 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1008.11~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux +10 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux +12 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux +7 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux +3 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.6 TUS | perf +17 | 4.18.0-372.118.1.el8_6 | RHSA-2024:5281 |
| RHEL 8.6 E4S | perf +25 | 4.18.0-372.118.1.el8_6 | RHSA-2024:5281 |
| RHEL 8.6 AUS | perf +17 | 4.18.0-372.118.1.el8_6 | RHSA-2024:5281 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.4 TUS | kernel-rt +12 | 4.18.0-305.138.1.rt7.214.el8_4 | RHSA-2024:5282 |
| RHEL 8.4 TUS | perf +17 | 4.18.0-305.138.1.el8_4 | RHSA-2024:5266 |
| RHEL 8.4 E4S | perf +18 | 4.18.0-305.138.1.el8_4 | RHSA-2024:5266 |
| RHEL 8.4 AUS | perf +17 | 4.18.0-305.138.1.el8_4 | RHSA-2024:5266 |
| RHEL 8.2 AUS | perf +17 | 4.18.0-193.141.1.el8_2 | RHSA-2024:6992 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.63.1 | SUSE-SU-2024:2947-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| SLES 15 SP5 | kernel-docs | 5.14.21-150500.55.73.2 | SUSE-SU-2024:2939-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.128.1 | SUSE-SU-2024:2929-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.128.1.150400.24.62.1 | SUSE-SU-2024:2929-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.194.1 | SUSE-SU-2024:2901-1 |
| SLES 12 SP5 | kernel-docs | 4.12.14-122.225.2 | SUSE-SU-2024:2940-1 |
| SLES 12 SP5 | kernel-syms +3 | 4.12.14-122.225.1 | SUSE-SU-2024:2940-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.128.1.150400.24.62.1 | SUSE-SU-2024:2929-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.128.1 | SUSE-SU-2024:2929-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.194.1 | SUSE-SU-2024:2901-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.225.1 | SUSE-SU-2024:2940-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.197.1 | SUSE-SU-2024:2892-1 |
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.128.1 | SUSE-SU-2024:2929-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.128.1.150400.24.62.1 | SUSE-SU-2024:2929-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.88.1 | SUSE-SU-2024:2902-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.128.1 | SUSE-SU-2024:2929-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.128.1.150400.24.62.1 | SUSE-SU-2024:2929-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.88.1 | SUSE-SU-2024:2902-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_17 +1 | 1-150500.11.3.1 | SUSE-SU-2024:2939-1, SUSE-SU-2024:2894-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.128.1 | SUSE-SU-2024:2929-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_29 | 1-150400.9.3.1 | SUSE-SU-2024:2929-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.225.1 | SUSE-SU-2024:2940-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_59 | 1-8.3.1 | SUSE-SU-2024:2940-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.128.1 | SUSE-SU-2024:2929-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.128.1.150400.24.62.1 | SUSE-SU-2024:2929-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
| SUSE Manager Server 4.3 | kernel-default-base | 5.14.21-150400.24.128.1.150400.24.62.1 | SUSE-SU-2024:2929-1 |
| SUSE Manager Server 4.3 | kernel-syms +3 | 5.14.21-150400.24.128.1 | SUSE-SU-2024:2929-1 |
| SUSE Manager Proxy 4.3 | kernel-default-base | 5.14.21-150400.24.128.1.150400.24.62.1 | SUSE-SU-2024:2929-1 |
| SUSE Manager Proxy 4.3 | kernel-syms +2 | 5.14.21-150400.24.128.1 | SUSE-SU-2024:2929-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | dtb-aarch64 +9 | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.63.1 | SUSE-SU-2024:2947-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| openSUSE Leap 15.5 | kernel-docs | 5.14.21-150500.55.73.2 | SUSE-SU-2024:2939-1 |
| openSUSE Leap 15.5 | kernel-rt +3 | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.5 | kernel-default | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| openSUSE Leap Micro 5.5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| openSUSE Leap Micro 5.5 | kernel-rt | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +6 | 5.4.17-2136.347.6.el8uek | ELSA-2025-20553 |
| Oracle Linux 7 | kernel-uek-tools | 5.4.17-2136.347.6.el7uek | ELSA-2025-20553 |
Advisories 18
- 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
- RHSA-2024:5282 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2024:5281 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2024:5266 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2024:6992 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Sep 28, 2026
- WID-SEC-2024-1625 Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 27, 2026
- ICSA-24-102-01 Siemens SIMATIC S7-1500 TM MFP CISA ICS & IT advisories · May 14, 2026
- ICSA-25-226-07 Siemens Third-Party Components in SINEC OS CISA ICS & IT advisories · Feb 25, 2026
- SSA-355557 SSA-355557: Multiple Vulnerabilities in Third-Party Components in SINEC OS before V3.2 Siemens ProductCERT · Feb 24, 2026
- SUSE-SU-2024:2892-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2940-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2947-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2939-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2901-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2902-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2929-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2025-20553 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 9, 2025
- SUSE-SU-2024:2894-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
References
- https://git.kernel.org/stable/c/d2211e6e34d0755f35e2f8c22d81999fa81cfc71
- https://git.kernel.org/stable/c/38d02ba22e43b6fc7d291cf724bc6e3b7be6626b
- https://git.kernel.org/stable/c/8e0ecaf7a7e57b30284d6b3289cc436100fadc48
- https://git.kernel.org/stable/c/da22ca1ad548429d7822011c54cfe210718e0aa7
- https://git.kernel.org/stable/c/e6faac3f58c7c4176b66f63def17a34232a17b0e